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Mussel Magic

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How can mussels remove nutrients and improve water quality in Puget Sound?

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Mussel Magic

  1. 1. Shellfish at Work! A nutrient bioextraction project using wild set of blue mussels (Mytilus trossulus) in Budd Inlet Aimee Christy, Bobbi Hudson, and Andrew Suhrbier Teacher Summer Training - Biomimicry June 24, 2015
  2. 2. 1.  Olympia, Washington based 501c(3) 2.  Mission: Fostering sustainable shellfish resources & a healthy marine environment through research & education 3.  PSI’s funding source: – Largely competitive federal grants – Some private foundation grants 4.  Partnerships are very important Bobbi Hudson, M.Sc. Executive Director Aimee Christy, M.Sc. Research Biologist Andy Suhrbier, B.Sc. Senior Biologist All PSI staff bios at www.pacshell.org
  3. 3. EPA’s National Estuary Program (NEP) via WA Dept. of Ecology Partners: •  City of Olympia, Stream Team •  LOTT Cleanwater Alliance, WET Science Center •  Port of Olympia •  Puget Sound Restoration Fund •  Squaxin Island Tribe •  The Evergreen State College •  Thurston County Conservation District, South Sound GREEN •  WA Dept. of Corrections •  Washington State University (Puyallup Extension Facility) •  West Bay and Boston Harbor Marina
  4. 4. WA Dept. of Ecology 2008 Water Quality Assessment
  5. 5. • Fertilizers & Detergents • Septic systems • Wastewater treatment plants • Livestock • Pet waste • Puget Sound Dog waste, Boston Harbor Marina
  6. 6. Diagram: www.nyc.gov Akashiwo sanguinea bloom in Budd Inlet. Photo: Kelsey Browne, LOTT Alliance Secchi disk measuring water clarity in Budd Inlet
  7. 7. Photos: Long Island Sound Study
  8. 8. One mussel contains: 0.8 - 1.2 % N 0.06 - 0.08 % P Agro–Aqua recycling of nutrients using mussel farming as a recycling engine. Odd Lindahl, 2008
  9. 9. West  Bay   Marina   Hearthfire   Grill  Dock   Swantown   Boatworks   Boston   Harbor   http://www.ecy.wa.gov/programs/eap/Nitrogen/sourcesPathwaysl.html
  10. 10. Boatworks 76 Hearthfire 56 Boston Harbor 81 May 2013 314 3-5 ft weighted nylon straps West Bay 101
  11. 11. Mussel Growth Mussel Biomass Temp, Salinity, pH Dissolved oxygen Phytoplankton/Secchi Fouling/Diversity
  12. 12. GoPro underwater video Recording mussel lengths/weights & community assemblages on lines
  13. 13. West Bay Hearthfire Boatworks Boston Harbor
  14. 14. West Bay Hearthfire Boatworks Boston Harbor
  15. 15. West Bay Hearthfire Boatworks Boston Harbor
  16. 16. West Bay Hearthfire Boatworks
  17. 17. Secret Recipe: Mussels Compost Green Waste Wood Chips Evergreen – 1200 lbs WSU – 500 lbs WA Dept. Corrections – 1300 lbs Yards, Classes, Labs – 1300 lbs Total – 4300 lbs
  18. 18. In-Vessel Composting System by DT-Environmental, Lynden, WA
  19. 19. Green Pet dog waste compost Quartermaster mussel compost vermicomposted Budd Inlet mussel compost Cedar Grove municipal compost Sun Gro potting soil
  20. 20. 3 pilot sites at maximum yield: 8,000 lbs mussels X 1% N X .08% P = 80 lbs N removed 6.4 lbs P removed
  21. 21. West Bay pilot: 120 straps Entire marina concept: 16,810 straps 605,000 lbs mussels 1% N = 6,050 lbs N Equivalent to annual N output of 600 people: 4.5 kg/yr or 10 lbs/yr
  22. 22. Thurston County Incentive Program LOTT Cleanwater Alliance Denitrification April-October Nutrient Bioextraction City of Olympia Stream Team Natural Lawn Care Program
  23. 23. Oxidation Ponds Enhancement Marshes www2.humboldt.edu/arcatamarsh/overview.html Ponds and marshes remove BOD, nitrogen and phosphorus
  24. 24. Images: Dean Calahan (calahans@si.edu)
  25. 25. 1.  The community learned about local water quality issues 2.  Nutrients were removed through nutrient bioextraction and possibly source control 3.  The project generated a marketable product: Surf-to-Turf compost 4.  Results may be used to provide a framework for a potential nutrient- trading concept 5.  More research is needed to better understand localized nutrient dynamics: –  biodeposition –  seston depletion –  dissolved oxygen (DO)
  26. 26. Questions?

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