Mill Pond, Gloucester Average number of Mummichogs vs. location

							                      Mill Pond, Gloucester Average number of
                    Mummichogs vs. location and tide gate position
                       Closed(1998-2001) vs Open( 2005-2008)
              60
              50                                                  No traps set at up 2
              40
              30
              20                                                      Tide gates closed
              10                                                      Tide gates opened
               0
                    down WS     up WS     down OBR up OBR
                              Wash. St.Osman Wash. St. Osman




                      Mill Pond, Gloucester Average Mummichog Volume
                          1998-2001, 2005-2008 vs. area and Treatment


              4
              3
Volume (ml)




              3
              2                                                       Tide gates closed
              2                                                       Tide gates opened
              1
              1
              0
                     down         up         down 2       up 2
                                       Location



                      Mill Poind, Gloucester Ave. Volume of Mummichogs
                                  vs. Tide gate position Closed
                                  (1998-2001), Open (2005-2008)

              3.5
              3.0
                                                                                  down
Volume (ml)




              2.5
              2.0                                                                 up
              1.5                                                                 down 2
              1.0
                                                                                  up 2
              0.5
              0.0
                        Tide gates closed             Tide gates opened
                       Mill Pond, Gloucester Average number of
                       mummichogs caught 1998-2001=closed,
                                   2005-2008=open
                                                                Hypothesis: Rapid speed
                                                                of water through tide
                  60                                            gate prevents fish from
                  50                                            entering traps. Bird
                  40                                                          down WS
                  30                                                          up WS
                  20
                  10                                                          down OBR
                   0                                                          up OBR
                       Tide gates closed    Tide gates opened




                  Mill Pond "Gloucester, Average Mummichog Volume vs.
                                          Season
                                  1998-2001, 2005-2008
              5
              4
Volume (ml)




              3
                                                                                          Fall
              2                                                                           Spring
              1                                                                           Summer

              0
                       down                up          down 2               up 2
                     Average Number of
           Mummichogs vs. tidegate position, Mill Pond
                  60
                         Gloucester
                       50
   gates closed (1998-2001),
                       40
   vs open (2005-2008)30
                       20
Amount




                       10                                    Tide gates closed
                        0
                                                             Tide gates opened
                               down up WS down      up
                                WS        OBR      OBR



                               Location




            O' Maley Mummichogs 5/28/2009
30
25
20
15
10                                                                  Mummichog
  5
  0
          down            up              down 2    up 2

          Trap 1        Trap 3            Trap 5    Trap 6
Average of Mummichog Area
          Mill Pond Gloucester, Percent Frequencies of species gates open
Treatment              down   down 2 up      up 2   Grand Total
                         (1998-2001),vs closed(2005-2008)
Tide gates closed        40.15 57.00 32.73                38.15
Tide gates open           8.55 27.50 31.67 34.10          24.74
   100%
Grand Total              32.25 40.14 32.50 34.10          33.52
   90%
   80%
   70%
   60%
   50%
   40%
   30%
   20%
   10%
    0%




                                                                       Tide gates closed
                                                                       Tide gates open




                      Species diversity closed tidegates
                                                           Mummichog
                                                          4spined stickleback
                                                           3 spined stickleback
                                                          9 spined stickleback
                                                          Silverside
                                                           Eel
                                                          yellow perch
                                                          SAND SHRIMP
                                                          Grass Shrimp
                                                          Green Crab
                                                          Barnacle
                                                          Periwinkle
                                                          mud snail
                                                          Cunner