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Published byElmer Hamersley Modified over 9 years ago
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Photo credits (top) ;Andy Drumm; (bottom) Mark Godfrey Climate Adaptation on the Albemarle-Pamlico Peninsula Christine Pickens, Chuck Peoples, & Aaron McCall Climate, Risk & Resilience Learning Exchange May 29, 2013 New Orleans, Louisiana Photo credits: (top) John Warner; (bottom) Kelly Coleman, John Warner
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Where We Work Slide Text Albemarle-Pamlico Peninsula Albemarle Sound Pamlico Sound Atlantic Ocean
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Wetland Mosaic Landscape Pocosin Swamp forest Pine flat Hardwood flat Riverine swamp forest Estuarine shrub/scrub Fresh marsh Brackish marsh
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Thick Peat Deposits Peat Depth (ft) Pocosin Swamp forest Pine flat Hardwood flat Riverine swamp forest Estuarine shrub/scrub Fresh marsh Brackish marsh 0 7 14
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Challenges Sea-level Rise 1 – 2 ft average elevation Habitat conversion Shoreline erosion Ditched Landscape > 280 miles of ditches From timber harvesting and agriculture Soil oxidation Salt water intrusion points Catastrophic Wildfires Flammable organic soils 2011 Fire: 5.5 million tons C lost
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Coastal Adaptation Approaches 1.Restore Hydrology (water patterns) a)Water control structures → prevent salt water intrusion b)Ditch plugs → keep ground water levels higher, better oyster growing conditions 2.Construct Oyster Reefs a)Marl and shell bag reefs → reduce shoreline erosion, provide habitat for fish 3.Vegetative Plantings a)Flood- and salt-tolerant species → establish native tree species, eventually adds to peat layer, provides habitat
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Water Control Structure
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Upstream Structure
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Water Control Structure Effectiveness Structure Installed Pains Bay Fire & Hurricane Irene Sound Salinity
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Oyster Reefs
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Oyster Reefs and Shoreline Erosion No Reef: 4.2 m/yr Established Reef: 1.7 m/yr
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Oyster Reefs and Aquatic Faunal Habitat Oyster Density Marl: 144 oysters/m 2 Shell Bag: 840 oysters/m 2 Higher species richness along reefs vs. open water
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Vegetative Plantings Planting design 40 acres 11,500 bald cypress 2,000 black gum 6,750 pond pine Planted March 2010 >90% transplant survival Hurricane Irene 2011 2+ m storm surge
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Conclusions and Moving Forward Success with using a mixture of approaches Natural defenses (oyster reefs) Infrastructure (water control structures) Success with willing partners on conservation lands Improve vegetative planting approach Evaluate economic benefit of adaptation approaches
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Acknowledgments TNC –Chuck Peoples –Aaron McCall –Kate Murray –Brian Boutin –Becca Benner –Mike Horak –Katherine Skinner US Fish & Wildlife Service –Mike Bryant –Scott Lanier –Dennis Stewart –Brian van Druten Volunteers –Kelly & Coleman Davis –Shell bag volunteers Funding Kindly Provided By: –Duke Energy –TNC-NOAA Community-based Restoration Program –SARP-NOAA Community-based Restoration Program –FAF-NOAA Community-based Restoration Program –Albemarle-Pamlico National Estuary Program –Wildlife Conservation Society Wildlife Action Opportunities Fund –Grady-White Boats –Private donations
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