Download - Oyster presentationfor epa
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The Urban Assembly New York Harbor School
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Oyster Restoration and Research Project
The Urban Assembly New York Harbor School
Advanced Aquaculture ClassFall 2010
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Harbor School Loves Oysters
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Harbor School’s Oyster History
• Harbor School and Baykeeper have been working together to restore oysters to the Harbor since the school’s inception
• 2003 Harbor School Students clean and monitor oyster gardens at The South Street Seaport Museum.
• 2005: Harbor Corps begins patrolling the city to work on about 30 different oyster gardens
• 2008 Bart Chezar of the Bay Ridge Flats Oyster Project starts working with the Harbor School Dive team on his groundbreaking reef on the Bay Ridge Flats
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• 2008: First generation Floating Upweller System built, 100,000 oysters on Governors Island
• 2009: The new Eco-dock was in place on Governors Island holding 500,000 oysters
• 2010: Harbor School joins the Oyster Restoration and Research Partnership
Harbor School Oyster Work
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Why Oysters?
• Filtration of water and concentration of biodeposits.
• Oysters provide habitat for fish (as well as other vertebrates and invertebrates) in the benthic zone.
• Stabilizes the benthic and/or intertidal habitat
• Increases landscape diversity
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Oysters and our CTE Department
• Oysters, and oyster projects are excellent platforms for our Career Training classes
• We hope to have all of our CTE classes working together on this project
• To date Aquaculture, Advanced Vessel Operations and the Student Scientific Divers have collaborated in building and monitoring our reefs
• In the future we hope to include Marine Engineering’s remote operated vehicles and Marine Policy’s young writers
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Oyster Restoration Research Project
• Project Overview
• Remote Setting
• Nursery/Growout
• Reef Construction
• Monitoring
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Partners!
Oyster Restoration Research Project Partners include, the Hudson River Foundation, NY/NJ Baykeeper, US Army Corps of Engineers, The Urban Assembly New York Harbor School, The New York Harbor Foundation, The US Environmental Protection Agency, The Trust for Governors Island, NY-NJ Harbor Estuary Program, NY City Department of Parks and Recreation, NY City Department of Environmental Protection, New York State Department of Environmental Conservation – Hudson River Program, Hudson River Park Trust, NOAA Restoration Center, Bart Chezar (Bay Ridge Flats Oyster Project), Rocking the Boat.
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Reef Sites
Dive Sites:Governors Island, Bay Ridge Flats and Staten Island (not shown)Wading Sites:Hastings and Soundview Park
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Eco-dock, pier 101
Remote Setting and Clam Shell Storage, Lima Pier
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Remote Setting Facility on Lima Pier
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Filter Pump Head Tank Setting Tanks Pier
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2mm Spat On Shell
800 Watt heating element
Mesh bag with shell
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4mm Spat on Shell
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Remote Setting Results
• NYHS Performed 2 sets of oyster larvae
• Set 1: 3 million larvae on 30,000 shells
• Set 2: 6 million larvae in 50,000 shells
• Result: 80,000 shells each with an average of 25 oysters
• 2,000,000 oysters
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Remote Setting Lessons Learned
1.Cleaner shells will result in a higher setting rate
2.Better access to our facility would allow for more control over conditions in the tanks
3.A Higher quality water supply would also be beneficial
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Nursery and Growout
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Pearl Net
Lantern Net
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Spat on Shell Ready for Deployment
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Grow out Results
• Approximately 70,000 shells
• Each shell containing between 10 and 20 live oysters
• Oysters ranged in size from 15 to 60mm
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Growout lessons learned
• Start with fewer oysters in each net
• Reduce handling whenever possible
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Reef Design
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Each Reef Consists of…
• 23 cubic yards of rock
• 9 tons of clam shell
• 50,000 oysters on anywhere from 2,500-5,000 shells
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US Army Corps of Engineers install the rock and shell on the Bay Ridge Flats Reef
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Harvesting Techniques and Monitoring
• Extract oysters from eco-dock
• Empty oysters into crates and buckets
• Clean oysters
• Count and measure oysters in buckets
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Distribution
• Oysters travel to reef sites in Harbor School vessels
• Oysters are distributed on reefs using buckets and quadrants for reference
• On dive sites, Bay Ridge Flats, Governors Island and Staten Island distribution is carried out by SCUBA teams
• Wading sites Aquaculture students and volunteers do the distribution being very careful not to step on the oysters
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Harvesting and Spat on Shell Deployment
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Diving Safely in New York Harbor
• SCUBA instructors Joe Gessert and LivDillon organized a Dive control Board made up of commercial divers
• This led to new protocols including full face masks, tethered dives, and safety divers ready at all times
• Currently Harbor School is in the process of becoming a scientific diver training facility
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• This project would not have been possible without the dedication of our divers
• Students and teachers routinely arrived on Governors Island hours before school, often while it was still dark
• Despite air temperatures below 40° and water temperatures below 50° all 250,000
oysters are down
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Buckets as Standard
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