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The Herring River estuary in Wellfleet, Cape Cod, Massachusetts, has been tidally restricted for more than a century by a dike constructed near the mouth of the river. Upstream from the dike, the tidal restriction has caused the conversion of salt marsh wetlands to various other ecosystems including impounded freshwater marshes, flooded shrub land, drained forested upland, and brackish wetlands dominated by Phragmites australis. This estuary is now managed by the National Park Service, which plans to replace the aging dike and restore tidal flow to the estuary. To assist National Park Service land managers with restoration planning, the U.S. Geological Survey collected fourteen sediment cores from different ecosystems...
Categories: Data;
Tags: 137-cesium,
210-lead,
Barnstable County (606927),
Cape Cod (606914),
Cape Cod National Seashore (606900), All tags...
Commonwealth of Massachusetts (606926),
Constant Rate of Supply (CRS) model,
Duck Creek (616758),
Geochemistry,
Herring River (616776),
Town of Wellfleet (618261),
United States of America,
Wellfleet Harbor (616838),
accretion rate,
age model,
carbon,
carbon burial,
carbon isotope analysis,
ecological restoration,
elevation,
environment,
geoscientificInformation,
inlandWaters,
location,
nitrogen,
oceans,
piston coring,
radiometric dating,
salt marshes,
sea-level change,
sedimentation,
soil chemistry,
wetland ecosystems,
wetland soils,
wetlands, Fewer tags
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Nineteen sediment cores were collected from five salt marshes on the northern shore of Cape Cod where previously restricted tidal exchange was restored to part of the marshes. Cores were collected in duplicate from two locations within each marsh complex: one upstream and one downstream from the former tidal restriction (typically caused by an undersized culvert or a berm). The unaltered, natural downstream sites provide a comparison against the historically restricted upstream sites. The sampled cores represent a chronosequence of restoration occurring between 2001–10. Collected cores were up to 168 cm in length with dry bulk density ranging from 0.04 to 2.62 grams per cubic centimeter and carbon content 0.12 %...
Categories: Data;
Tags: Barnstable County (606927),
Bass Creek (617465),
Boat Meadow River (616844),
Cape Cod (606914),
Cape Cod Canal (619536), All tags...
Commonwealth of Massachusetts (606926),
Constant Rate of Supply (CRS) model,
Dock Creek (616591),
Geochemistry,
Mill Creek (616621),
Sagamore Beach (617797),
Scusset Beach (616340),
Town of Bourne (619412),
Town of Eastham (619414),
Town of Orleans (618257),
Town of Sandwich (618259),
United States of America,
accretion rate,
age model,
carbon,
carbon burial,
carbon isotope analysis,
cesium-137,
ecological restoration,
elevation,
environment,
geoscientificInformation,
inlandWaters,
lead-210,
location,
nitrogen,
oceans,
piston coring,
radiometric dating,
salt marsh,
salt marshes,
sea-level change,
sedimentation,
soil chemistry,
wetland ecosystems,
wetland soils,
wetlands, Fewer tags
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