HABs - Oregon State University

Document Sample
HABs - Oregon State University Powered By Docstoc
					Monitoring Oregon’s Coastal Harmful Algae (MOCHA):
   A logistical approach to HAB event response.
                                Z. Forster1, M. Hunter1, P.G. Strutton2, J.F. Tweddle2, A.M. Wood3, B. Peterson4, L. O’Higgins4
                                                                   1Oregon     Department of Fish and Wildlife, 2001 Marine Drive, Astoria, OR 97103, USA.
                                                  2College of Oceanic and Atmospheric Sciences, Oregon State University, 104 COAS Admin Bldg, Corvallis, OR 97331, USA.
                                                                  3Center for Ecology and Evolutionary Biology, University of Oregon, Eugene, OR 97403, USA.
                                                              4 NOAA Fisheries, Newport Research Station, 2115 SE Marine Science Dr, Newport, OR 97365, USA.




                                                                                                          Background
The Oregon Department of Fish and Wildlife (ODFW) has routinely monitored nearshore waters along the Oregon coast for the presence of Harmful Algal Blooms (HABs) since 2005. Closures of shellfish harvest
 areas due to contamination by phycotoxins are frequent, and have a considerable economic impact on coastal communities. In 2003, ODFW estimated that the closure of the razor clam fishery at Clatsop beach
 alone cost the local communities $4.8 million. In order to mitigate such losses to coastal communities the National Oceanic and Atmospheric Administration (NOAA), Monitoring and Event Response for Harmful
    Algal Blooms (MERHAB) awarded funding in 2007 to implement an integrated HAB monitoring and event response program for coastal Oregon. This new collaboration was dubbed MOCHA (Monitoring of
Oregon’s Coastal Harmful Algae) and partners included Oregon State University (OSU), University of Oregon (UO), NOAA Newport Research Station and ODFW. ODFW was able to expand its nearshore sampling
program and bridge a key data gap between Washington's Olympic Region Harmful Algal Bloom (ORHAB) monitoring program and California. This new partnership will play a vital role in fulfilling goals set forth by
                                                     the West Coast Governors Agreement on Ocean Health and Harmful Algal Bloom and Hypoxia Monitoring.




                                    Program Expansion                                                                                                                                                      Case Study
 As part of the MOCHA project, ODFW hired a phytoplankton sampling coordinator as well as a                                In April of 2009, while conducting routine phytoplankton cell counts from shore-side surf zone
 seasonal sampling position in 2008. The sampling coordinator works collaboratively with current                           samples, ODFW staff noted elevated levels of the diatom Pseudo-nitzschia (P-n) along the
 Oregon Department of Agriculture (ODA) agents as well as ODFW shellfish staff to collect and                              Clatsop beaches. A time sequence of events follows:
 ship whole water and filtered water samples to the Astoria, Oregon laboratory. The coordinator                            • April 25, Pseudo-nitzschia cell counts reach 90,000 cells/L along the Clatsop beaches.
 also collaborates with NOAA and UO to ensure consistency in sample treatment and                                          Notification was immediately sent out with information that included: cell counts, a coastal map of
 enumeration. The seasonal sampler assures consistent sampling from the south Oregon coast                                 hot spots and bio-physical observations.
 region as well as working with ODA, the regulatory body responsible for tissue toxin testing, to                          • April 26, NOAA Pacific Northwest Fisheries Science Center (PNWFSC) requests samples for
 collect mussels and clams for toxin testing.                                                                              scanning electron microscopy (SEM) species identification. SEM species identification results
                                                                                                                           indicated the presence of multiple species of P-n including P. Australlis which is known to  2009 Oregon Coast Pseudo-Nitzschia Abundance


 With increased staffing, and collaboration with MOCHA partners as well as with ODA, ODFW                                  produce DA.
                                                                                                                                                                                                                                 Clatsop Beach                        Lane County                      Linclon County                          Gold Beach                    Coos County


                                                                                                                                                                                                   1,000,000

                                                                                                                           • April 27, Tissue toxin results released from ODA indicated an elevated level of DA in razor
                                                                                                                                                                                                     950,000
 was able to increase the number of nearshore sample sites from five to eleven and increase                                                                                                          900,000
                                                                                                                                                                                                     850,000
                                                                                                                                                                                                     800,000

 sample frequency to a weekly basis. This enhancement of more than doubling the number of                                  clams. Washington’s ORHAB program also reports “action levels” of P-n cells.
                                                                                                                                                                                                     750,000
                                                                                                                                                                                                     700,000
                                                                                                                                                                                                     650,000




                                                                                                                                                                                     Cells/Liter
                                                                                                                                                                                                     600,000

 sites sampled and halving the time period between sampling decreases the likelihood of missing                            • April 29, Northwest winds, an indicator of favorable upwelling conditions, alluded to the threat of
                                                                                                                                                                                                     550,000
                                                                                                                                                                                                     500,000
                                                                                                                                                                                                     450,000
                                                                                                                                                                                                     400,000
 a bloom. ODFW uses a list serve to distribute data and as an alert to any potential HABs. Since                           a bloom, chains of 3-10 cells were common and cells appeared very healthy. The highest cell
                                                                                                                                                                                                     350,000
                                                                                                                                                                                                     300,000
                                                                                                                                                                                                     250,000

 2008, the listserve has been greatly expanded to include many more people from Federal and                                counts are now in Seaside (62,000 cells/liter).                           200,000
                                                                                                                                                                                                     150,000
                                                                                                                                                                                                     100,000
                                                                                                                                                                                                      50,000

 State agencies, private business, and resource users.                                                                     • May 6, P-n cell counts remained high although environmental drivers including south winds and
                                                                                                                                                                                                           0




                                                                                                                                                                                                                                                                                                                    Jun-06
                                                                                                                                                                                                                                                                                                                             Jun-06
                                                                                                                                                                                                               Jan-06
                                                                                                                                                                                                                        Jan-06




                                                                                                                                                                                                                                                                                                                                      Jul-06
                                                                                                                                                                                                                                                                                                                                                Jul-06
                                                                                                                                                                                                                                                                                                                                                         Aug-06
                                                                                                                                                                                                                                                                                                                                                                  Aug-06
                                                                                                                                                                                                                                  Feb-06
                                                                                                                                                                                                                                           Feb-06




                                                                                                                                                                                                                                                                       Apr-06
                                                                                                                                                                                                                                                                                Apr-06
                                                                                                                                                                                                                                                                                         Apr-06
                                                                                                                                                                                                                                                                                                  May-06
                                                                                                                                                                                                                                                                                                           May-06
                                                                                                                                                                                                                                                    Mar-06
                                                                                                                                                                                                                                                             Mar-06




                                                                                                                                                                                                                                                                                                                                                                           Sep-06
                                                                                                                                                                                                                                                                                                                                                                                    Sep-06
                                                                                                                                                                                                                                                                                                                                                                                             Sep-06
                                                                                                                           warming nearshore temperatures seemed to favor down-welling conditions. P-n chains became
 ODFW has also been standardizing a sequence of response steps triggered when a HAB                                        less common and the bloom seems to show signs of increased stress.
 reaches “action levels” in the shore-side phytoplankton monitoring. Steps include; increased                              • May 8, ODFW staff collects and field tests a small sample of razor clams from the Seaside area
 nearshore water analysis, the use of domoic acid (DA) field testing kits, increased tissue                                using a Mercury Science trial DA SPOT pad detection kit. Test results from tissue collected from
 laboratory testing and increased alert notifications.                                                                     the tip of the neck, gills and foot indicate an increase in DA levels. ODFW staff consults Mercury
                                                                                                                           Science to confirm results, a range of 4-14 ppm is agreed upon.
 ODFW has also participated in outreach and education opportunities including; mentoring for                               • May 11, Routine ODA tissue toxin testing indicates 1.5 ppm and 1.9 ppm DA in two razor clam
 local high school and junior college students and leading field expeditions including a cruise at                         samples collected from Clatsop beach.
 the PNW Biology Professors Conference. The partnership between ODFW and MOCHA has                                         • May 15, P-n cell counts (68,000 cells/L) comprised mainly of larger cells.
 also provided education and information opportunities for staff through face to face talks with                           • May 18, ODFW collects clams for field SPOT pad testing. Field test results again indicate
 constituents both whether in the harvest area or at the lab.                                                              elevated levels of DA in razor clams. The information is immediately disseminated to ODA via cell
                                                                                                                           phone and another sample is sent in for non-routine HPLC analysis on razor clams for DA .
                                                                                                                           • May 21, ODA releases results of 1.6 ppm a small decrease from the previous week. The fishery
                                                                                                                           remains open and standard monitoring continues.



                                                                                                                                                                    2009 Oregon Coast Pseudo-nitzschia Abundance

                                                                                                                                                                          Clatsop Beach                                 Lane County                                                                           Linclon County                                                                          Gold Beach     Coos County


                                                                                                                                                        1,000,000

                                                                                                                                                         900,000

                                                                                                                                                         800,000

                                                                                                                                                         700,000

                                                                                                                                                         600,000
                                                                                                                                          Cells/Liter




                                                                                                                                                         500,000

                                                                                                                                                         400,000

                                                                                                                                                         300,000

                                                                                                                                                         200,000

                                                                                                                                                         100,000

                                                                                                                                                               0
                                                                                                                                                                    Jan       Feb                    Mar                                   Apr                                           May                                          Jun                                             Jul                 Aug      Sept    Oct




                                                                                             Conclusion
   The expansion of ODFW’s nearshore sampling program has provided valuable early detection and event response information to the MOCHA collaborators.                                                                                                                                                                                                                                                                                       Clatsop Beaches

  Previously an increase in DA in shellfish might have gone undetected for up to two weeks and although in the above example DA in razor clams never reached                                                                                                                                                                                                                                                                                  Cannon Beach
    regulatory closure levels, the early detection system worked. Managers were able to disseminate the information and order more testing to assure that the
   harvested shellfish were safe for human consumption. As the MOCHA project continues to work to understand the dynamics and impacts of HABs along the
                      Oregon coast, case studies such as the one above provide great insight into future HAB event response and mitigation.
    With increasing interest and demand for Oregon’s shellfish, resources managers are under increased pressure to mitigate any negative human health and
   socioeconomic impacts caused by HABs. Future proposed steps include creation of a central data distribution center for dissemination of cell count data and
   alert information, further calibration of field tests to be comparable with ODA test requirements and further collaboration with the west coast HAB community.

                                                                                                                                                                                                                                                                                                                                                                                                                                            Agate Beach




                                                                                                                                                                                                                                                                                                                                                                                                                                        Tillicum Beach




                                                                                                                                                                                                                                                                                                                                                                                                                                        North Spit

                                                                                                                                                                                                                                                                                                                                                         Spot pad test results.
                                                                                                                                                                                                                                                                                                                                                                                                                                   Whiskey Run


                                                                                                                                                                                                                                                                                                                                                                                                                                   Bastendorff Beach




                        Razor clamming on Clatsop Beach.                  Pseudo-nitzschia                             Photo Credit: Brian Bill, NOAA’s PNWFCS                                                      Performing DA SPOT pad test.


                                                                                                    Acknowledgments                                                                                                                                                                                                                                                                                                                Gold Beach

                        Tom Stewart, Mercury Science (www.mercuryscience.com), for providing the DA SPOT pad tests used in the case study. Brian Bill, NOAA’s PNWFSC, for his SEM identification of Pseudo-nitzschia
                              cells. ODA for their continued sampling effort and partnership with ODFW. Marc Suddleson, NOAA-CSCOR, for his continued assistance and encouragement of the MOCHA project.

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:9
posted:8/19/2012
language:
pages:1