dune and coastal bank restoration: using soft engineering ... · santander, spain. spanish state...
TRANSCRIPT
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Dune and Coastal BankRestoration: using softengineering techniquesMICKEY MARCUS
NEW ENGLAND ENVIRONMENTAL, [email protected]
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Bank restoration along tidalRiver.
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Plants grown in nursery in coir mat
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After one year, plants established, Starting to gain land.
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Established coastal bank
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Bank protection using coir fascinesalso known as “biologs”
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Coir covered with “sacrificial sand”and planted with beach grass
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Becoming established
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After the first year
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Native plants areBecoming established
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Coastal bank 1m erosion/yearLittle Compton, RI
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Coir logs on slope
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Installed withEarth anchors
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Planted with native plants
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Beach Grass in BioLog
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After planting
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Sprigs Installed
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Conditions after 10 years
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Bank has naturalized
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Mediterranean Coast near Valencia, Spain1994
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Dune Restoration
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Dune restoration completed
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Secondary dunes
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Restoration of coastal dunes and salt ponds in progress (2005)
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Dune Restoration, Bay of Biscay 2007
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Coastal dune/salt pond restoration. Santander, Spain
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Spanish State Nursery for coastal plants
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Opportunities in United States
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Unconsolidated sand on 30m highcoastal bank
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Existing site conditions (Plymouth)
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Install baffle system, plant,then hydro-seed slope
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Establishment period.
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Use flexible mesh biodegradablefabric to capture sand and to protectestablishing vegetation
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After one year of growth
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One year after establishment
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After two years
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Completed slope after two years
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Completed project (lower vegetatedsection of dune)
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Rock Toe of slope, covered with sand
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Creating wooden staging to prevent slope erosion during planting
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Installation of baffles & dune plants
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Hydro-seed slope with native seed mix
Completed:June, 2008
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Site after one year(August, 2009)