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					                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             CONCLUSIONS
                                                      Water Velocity and Suspended Solids Concentrations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     • The fact that transects 1 and 2 have hard wood tree cover that does not allow
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             underwater vegetation to grow, appears to play a major role in the relatively

                                                  in the Proximity of Tree Islands in Everglades National Park                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               rapid flow in areas with dense tree cover. In contrast, water velocities are
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             relatively low inside the tree line at transect 3, which is located at the tail of the
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             tree island. In the tail the trees are sparser and do not significantly impede light
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             penetration towards the water, thereby permitting underwater vegetation to
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             flourish. This underwater vegetation impedes flow, thereby decreasing water
                                                                METHODS                                                                                                                                                                                                              Gumbo Limbo Transect 3 - West Side
                                                                                                                                                                                                                                                                                        Tree Line Starts at G3 + 175
                                                                                                                                                                                                                                                                                                                                                                                                          Speeds w/o considering Vz and
                                                                                                                                                                                                                                                                                                                                                                                                          omitting data with SNR values equal
                                                                                                                                                                                                                                                                                                                                                                                                          to or less than 5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  RESULTS                                                                                                                                                                                                                                                                                                                                                                                    velocities in this area.
 OBJECTIVESABSTRACT                                               OBJECTIVES                                                                                                            5.00


                                                                • Spatially intensive velocity data are being taken along 3 transects that are
                                                                                                                                                                                        4.50
                                                                                                                                                                                                                                                                                                                                                                                                                                   Tree Line
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         • Water velocity measurements along the                                                                                                                                                                                                                                                                                                                                                             • The Acoustic Doppler Velocity Meters work
                                                                                                                                                                                        4.00

 The overall goal of this study is to determine the             perpendicular to the main North-South axis of each island, using a Sontek handheld
                                                                                                                                                                                        3.50
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         transects varied between less than 1 cm/s to more                                                                                                                                                                                                                                                                                                                                                   by generating a narrow beam of sound. The




                                                                                                                                                            Speed (cm/s)
                                                                                                                                                                                        3.00

 importance of water flow in the formation and preservation     device (Picture 2). The first and northern-most transect is located by the island’s                                     2.50
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         than 4 cm/s. The highest velocities occurred at                                                                                                                                                                                                                                                                                                                                                     sound is then reflected by particulate matter
                                                                                                                                                                                        2.00
 of tree islands in the Florida Everglades. In the process      tropical hardwood hammock (head), the second transect is located near the middle                                        1.50
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         those stations where there is an opening (due to                                                                                                                                                                                                                                                                                                                                                    suspended in the water. The equipment                                                                                                                                                         Gumbo Limbo Argonaut Location
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 February 14, 2003
                                                                                                                                                                                        1.00
 we intend to measure suspended sediment properties and         and the third is located close to the tail of the island. Each transect has its origin to                               0.50
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         sawgrass die-off) in transects 1 and 3. Relatively                                                                                                                                                                                                                                                                                                                                                  then measures the frequency change of the                                                                4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Bottom was stirred to add
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      suspended sediments
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Bottom was stirred to add
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       suspended sediments
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   20

                                                                                                                                                                                        0.00                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          3                                                                                                                                                                                                            18

 develop methods for measuring water velocity in the                                                                                                                                                                                                                                                                                                                                                                                                                                     high velocities are observed inside the tree line in                                                                                                                                                                                                                                                                                                                                                received signal and calculates the water




                                                                                                                                                                                                           G3 + 00

                                                                                                                                                                                                                         G3 + 10

                                                                                                                                                                                                                                   G3 + 20

                                                                                                                                                                                                                                              G3 + 30

                                                                                                                                                                                                                                                        G3 + 40

                                                                                                                                                                                                                                                                      G3 + 50

                                                                                                                                                                                                                                                                                G3 + 60

                                                                                                                                                                                                                                                                                          G3 + 70

                                                                                                                                                                                                                                                                                                        G3 + 80

                                                                                                                                                                                                                                                                                                                      G3 + 90

                                                                                                                                                                                                                                                                                                                                   G3 + 100

                                                                                                                                                                                                                                                                                                                                                   G3 + 110

                                                                                                                                                                                                                                                                                                                                                              G3 + 120

                                                                                                                                                                                                                                                                                                                                                                         G3 + 130

                                                                                                                                                                                                                                                                                                                                                                                    G3 + 140

                                                                                                                                                                                                                                                                                                                                                                                               G3 + 150

                                                                                                                                                                                                                                                                                                                                                                                                             G3 + 160

                                                                                                                                                                                                                                                                                                                                                                                                                        G3 + 170

                                                                                                                                                                                                                                                                                                                                                                                                                                     G3 + 180

                                                                                                                                                                                                                                                                                                                                                                                                                                                G3 + 190

                                                                                                                                                                                                                                                                                                                                                                                                                                                                G3 + 200
                                                                the west of the tree island and has a station every 5 meters.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   16
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   14
                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Station No.
 unique environments of the Everglades.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      velocity. Unfortunately the amount of                                                                    1




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Vx,Vy,Vz (cm/s)
                                                                                                                                                                                                                                                                                                                                                             Button
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         the areas closer to the head of the island. Low                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           12




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        SNR (dB)
                                                                                                                                                                                                           Sawgrass                          Open area with small patches of sawgrass.                                                                Sparse         Button Bush is thicker as we approach the                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        0


                                                                • One Sontek Argonaut ADV autonomous velocity meter has been installed near
                                                                                                                                                                                                                                                                                                                                                             Bush    island's tail. Sparse sawgrass. Underwater                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    10
                                                                                                                                                                                                                                             Speed depended on the location of the patches.                                                           Button                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   0                5             10             15                       20                 25             30              35             40             45            50              55

               Map of Everglades National Park                                                                                                                                                                                                                                                                                                        Bush
                                                                                                                                                                                                                                                                                                                                                             becomes plants abundant inside "tree line"
                                                                                                                                                                                                                                                                                                                                                             Thicker
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         velocities were recorded inside the tree line at the                                                                                                                                                                                                                                                                                                                                                suspended solids in the Shark Valley                                                                   -1

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    -2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   8



                                                                each tree island to obtain temporally intensive velocity in three dimensions
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   6
                                                                                                                                                                                                                                             Oct 01/02                                                                             Oct 04/02                                                                            Nov 08/02

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         tail of the island (Figure 1).                                                                                                                                                                                                                                                                                                                                                                      Slough is so low that the measurements                                                                 -3

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    -4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   4



                                                                (Picture 3).
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   2

                                                                                                                                                            Figure 1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         have not been reliable unless suspended                                                                -5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         Time (min)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   0




                                                                • Suspended sediments are characterized along the transects. Samples are                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         Gumbo Limbo Transect 3 - West Side                                                                                                                                                                                                                          solids are added by stirring the bottom or by                                                                                                    Vx                       Vy                     Vz                        SNRx                 SNRy                     SNRz


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Tree Line Starts at G3 + 175 (November 8, 2002)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             adding particulates to the water (Figure 5). Figure 5
                                                                collected without filtration for turbidity, particle size distribution and number of        • Wind velocity and direction are highly variable.                                                                                                                                                                                                                                                                                                                   4.50
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Water speeds w/o Vz, data with SNR values equal to or less
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            than 5 are omitted                                                                                                                                                 25


                                                                particles per ml analyses. The latter two are performed with a Coulter Counter              Water flow is shielded from wind influences inside                                                                                                                                                                                                                                                                                                                   4.00
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 3.50                                                                                                                                                                                                                                                                                                                                          20




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Speed (cm/s), (m/s)
                                                                Particle Size Analyzer (Picture 4). The gravimetric analysis of total suspended solids,     the tree line at transects 1 and 2 but not at transect                                                                                                                                                                                                                                                                                                               3.00
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               15
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             • However, it was also noted that even




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Others
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 2.50
                                                                volatile suspended solids and non- volatile suspended solids is being conducted by          3. Water depth was variable in all transects but                                                                                                                                                                                                                                                                                                                     2.00
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               10
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             with acceptable values of sound to noise
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 1.50
                                                                sampling with an in-line filtration system (Picture 1).                                     there is a clear tendency for water depth to                                                                                                                                                                                                                                                                                                                         1.00                                                                                                                                                                                                                                                                                                                                          5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             ratio (SNR) which is achieved by adding
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 0.50
                                                                                                                                                            decrease as the center of the island is approached                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Gumbo Limbo Transect 1 - West Side



                Enlarged Area                                   • Tests using dyes and tracers will be conducted in order to test if the acoustic                                                                                                                                                                                                                                                                                                                                                                                0.00                                                                                                                                                                                                                                                                                                                                          0
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             sediments to the water, some of the high                                                                                                                                   Tree Line Starts at G1 + 30 (021018)




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        G3 + 00

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  G3 + 05

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 G3 + 10
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           G3 + 15

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     G3 + 20
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               G3 + 25

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              G3 + 30

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        G3 + 35
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  G3 + 40

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            G3 + 45
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      G3 + 50

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 G3 + 55

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           G3 + 60
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     G3 + 65

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                G3 + 70
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    G3 + 75

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              G3 + 80

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        G3 + 85
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  G3 + 90

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               G3 + 95
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         G3 + 100

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     G3 + 105

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                G3 + 110
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           G3 + 115

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        G3 + 120
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   G3 + 125

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              G3 + 130

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          G3 + 135
                                                                                                                                                            in transects 1 and 2. This tendency was not                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      velocity magnitudes were primarily
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            6                                                                                                     Tree line



                                                                Doppler systems are underestimating water velocity through vegetation, since the                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Station No.

                       Area of Study
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            5


                                                                                                                                                            observed for transect 3. Turbidity was relatively low                                                                                                                                                                                                                                                                                                                                           sawgrass                                               Open area with small patches of sawgrass                                                                                                                                     Sparse                                   Button Bush
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             caused by the velocity reading in the “z”




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Velocity (m/s), (cm/s)
                                                                Doppler system requires that an area be cleared of vegetation between the sampling                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Button Bush                              becomes                                                                                                                            4




                                                                                                                                                            along all 3 transects with most values being in the                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          thicker

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             direction. We believe that the high Vz
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            3


                                                                volume and the transducers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Speed w/o Vz (cm/s)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Number of Particles/mL (x 10^4)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Avg Wind Speeed (m/s)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Mean Particle Size (um)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    WaterD (m)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Turbidity (NTU) (x 10^1)
                                                                                                                                                            0.45 NTUs to 0.55 NTUs range (Figure 2).
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            2




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             values are created by the addition of                                          1




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         Figure 2                                                                                                                                                                                                                                                                                                                                                                                            sediments and the release of gases when                                        0




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  G1 + 00


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            G1 + 05


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      G1 + 10


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    G1 + 15


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   G1 + 20


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             G1 + 25


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            G1 + 30


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             G1 + 35


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              G1 + 40


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         G1 + 45


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   G1 + 50


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             G1 + 55


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            G1 + 60


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      G1 + 65


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                G1 + 70


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          G1 + 75


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         G1 + 80
                                             Black
                         Satin Leaf X        Hammock                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         the bottom is stirred. All data have been                                                                                                                                                                 Station No.                                          Water Vel Magnitude (cm/s)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Vel. Mag. w/o Vz (cm/s)
                                         X    X
                                 Gumbo
                                                                                                                                                                                                                                                                                                                  Gumbo Limbo T1 + 00
                                                                                                                                                                                                                                                                                                                    October 4, 2002                                                                                                                                                                                                • The particle size distribution of most samples                                                                                                                                                                                                                                                                                                          revised and, for the sake of consistency, Figure 6
                                 Limbo
                                                                                                                                                                                                        5000                                                                                                                                                                                                                                                                                                                       was exponential in nature with the largest                                                                                                                                                                                                                                                                                                                incorporate only the x and y components
                                                                                                                                                                                                        4500
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   number of particles having a smaller average                                                                                                                                                                                                                                                                                                              of velocity (Figure 6).
                                                                                                                                                                                                        4000
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   diameter. Mean particle size was relatively
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              • Velocity measurements were taken with a dye and a ruler in areas with




                                                                                                                                                                           Number of Particles per ml
                                                                                                                                                                                                        3500

                      X - Tree Islands                                                                                                                                                                  3000                                                                                                                                                                                                                                                                                                                       constant, varying from 2.5 to 4.0 microns
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              dense sawgrass vegetation. Our data indicate Acoustic Doppler Velocity
                       Under Study                                                                                                                                                                      2500
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   (Figure 3).
                                                                                                                                                                                                        2000                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  meter water velocities are likely being underestimated. Further testing has
                                                                                                                                                                                                        1500
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              to be performed to confirm these preliminary findings. If it is confirmed, a
ABSTRACT                                                        Picture 1.                                     Picture 2.
                                                                                                                                                                                                        1000

                                                                                                                                                                                                        500
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              different method (other than use of the Sontek Flowtracker) will have to be
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Gumbo Limbo Transect 1 - West Side
                                                                                                                                                                                                          0                                                                                                                                                                                                                                                                                                                                                                                                                                                   October 18, 2002                                                                                                                                                                                                                developed to measure water velocity in areas that are densely vegetated
This study quantifies water velocities and determines                                                                                                                                                                2                       3                    4                 5               6             7       8        9          10

                                                                                                                                                                                                                                                                                                                                Particle Diameter (um)
                                                                                                                                                                                                                                                                                                                                                                                                 20                                30                      40                 50
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 1.8                        Total Suspended
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Volatile                                                                                                                                                                                                                                                               Tree Line
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Fixed
suspended sediment characteristics in the vicinity of 3 tree                                                                                                                                                                                                                                                                                                                                                                                                                                                                     1.6




islands situated in the Shark Valley Slough in Everglades                                                                                                       Figure 3                                                                                                                                                                                                                                                                                                                                                         1.4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              CONTACT*




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Solid Concentration (mg/L)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 1.2


National Park. The three islands are known as Black                                                                                                                                                                                                                                                                                                                                                                                                                                                                              1.0



Hammock, Gumbo Limbo and Satin Leaf. Additionally, we                                                                                                       •Total suspended solids were measured at 7                                                                                                                                                                                                                                                                                                                           0.8                                                                                                                                                                                                                                                                                                                                                            *Jose Bazante M.S., M.B.A.                    Michael Ross, Ph.D. and Daniel L. Childers, Ph.D.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Helena M. Solo-Gabriele, Ph.D., P.E.          Southeast Environmental Research Center,
plan to develop a method to evaluate the effect of wind on                                                                                                  stations at transect 1 using an in-line filtration
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 0.6


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                University of Miami, Dept. of Civil, Arch.,   Florida International University, Miami, Florida
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 0.4

water flow and to evaluate the use of the acoustic Doppler                                                                                                  system. Total suspended solids were in the order                                                                                                                                                                                                                                                                                                                     0.2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                and Environmental Engineering,
meters for measuring flow in the Everglades. We expect to                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Coral Gables, Florida                         Lynn Leonard, Ph.D.
                                                                                                                                                            of 1.0 mg/L and were relatively constant between                                                                                                                                                                                                                                                                                                                     0.0

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                jbazante@bellsouth.net hmsolo@miami.edu




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       G1 + 00




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         G1 + 05




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       G1 + 10




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          G1 + 15




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            G1 + 20




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              G1 + 25




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     G1 + 30
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              University of North Carolina at Wilmington,
find important correlations between the variables under study                                                                                               stations. As expected, most of the total suspended                                                                                                                                                                                                                                                                           Legend                                                                                                                                                                                                                                                                                                                                                                                                                                               Department of Earth Science and Geology,
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         Open Area: oa                                                                                                                                                                                                                                                      sr                                             oa                                            Inside tree line - no
that will allow us to model and understand the relationship                                                                                                 solids were volatile due to the high organic content
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         Sawgrass: sg
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         Spikerush: sr
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            sg                             sg/sr                                                      sr                                        sr
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               Station No.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         underwater
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         vegetation
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Sherry Mitchell, Ph.D.                        Wilmington, North Carolina
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         Buttonbush: bb
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Everglades National Park,
between water flow and the creation and preservation of tree                                                                                                of suspended solids in a marsh environment                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Homestead, Florida
islands.                                                        Picture 3                                      Picture 4                                    (Figure 4).                                                                                                                                                                                                                                                                                                                  Figure 4
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 SFC CESU, Miami, Florida (June 2-3, 2003)

				
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