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Abstract (from Wiley Online Library): Tidal marsh restoration and creation is growing in popularity due to the many and diverse set of services these important ecosystems provide. However, it is unclear what conditions within constructed settings will lead to the successful establishment of tidal marsh. Here we provide documentation for widespread and rapid development of tidal freshwater wetlands for a major urban estuary as an unintended result of early industrial development. Anthropogenic backwater areas established behind railroad berms, jetties, and dredge spoil islands resulted in the rapid accumulation of clastic material and the subsequent initiation of emergent marshes. In one case, historical aerial photos...
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Tidal marshes along the Atlantic coastline provide critical habitat for a wide variety of wildlife, help protect coastal ecosystems by filtering excess nutrients and pollutants, and serve as a buffer against coastal erosion and flooding. However, these important habitats and the species that rely on them are threatened by rising sea levels. Resource managers from the National Park Service Northeast Region, U.S. Fish and Wildlife Service Northeast Region, and the state of Massachusetts have expressed a need for a scientific analysis of the vulnerability of these salt marshes to sea level rise. The supply of sediment to marshes is a critical factor controlling marsh survival and adaptability to rising sea levels....
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2019,
CASC,
Completed,
Northeast,
Northeast CASC, All tags...
Projects by Region,
Sea-Level Rise and Coasts,
Sea-Level Rise and Coasts,
Water, Coasts and Ice,
Water, Coasts and Ice,
Wetlands,
Wetlands, Fewer tags
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Overview Climate change is likely to impact erosion rates, the magnitude and frequency of extreme rainfall/mass wasting events, and the accumulation of sediment in coastal areas. However, long-term rates of erosion and sediment delivery to coastal systems are poorly constrained and there is limited understanding of the relative effects of climate change versus land-use change on these processes. Furthermore, existing instrumental and historical observations are inadequate for constraining the frequency of extreme events and evaluating the potential for changes in the magnitude and frequency of these events through time. This project will bolster two distinct but related research projects: (1) an ongoing study...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2019,
CASC,
CASC,
Northeast,
Northeast, All tags...
Northeast CASC,
Northeast CASC,
Projects by Region,
Projects by Region,
Science Tools for Managers,
Sea-Level Rise and Coasts,
Sea-Level Rise and Coasts,
Water, Coasts and Ice,
Water, Coasts and Ice,
Wetlands,
Wetlands, Fewer tags
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Vertical accretion and elevation change of marshes is a critical factor controlling marsh survival and adaptability to rising sea levels. A wide variety of existing methods have been employed to measure accretion and elevation change in marshes on time scales ranging from weeks to centuries on many individual marshes located throughout the coastal northeastern United States. This dataset is a compilation of marsh accretion and elevation change rates compiled from a total of 27 published studies and 3 data sets published from 1975 through 2021, yielding a total of 292 individual estimates of marsh accretion or elevation change. The database includes: measurements of marsh surface elevation change from repeat surveys...
Categories: Data;
Tags: Brackish Marsh,
Connecticut Coastal,
Freshwater Tidal Marsh,
High Salt Marsh,
Low and Intermediate Salt Marsh, All tags...
Maine Coastal,
Massachusetts-Rhode Island Coastal,
New England,
New Hampshire,
New York,
United States,
geoscientificInformation,
marsh,
sedimentation studies,
wetland, Fewer tags
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Abstract (from Earth Surface Processes and Landforms): Consistent shoreline development and urbanization have historically resulted in the loss of wetlands. However, some construction activities have inadvertently resulted in the emergence of new tidal wetlands, with prominent examples of such anthropogenic wetlands found within the Hudson River Estuary. Here, we utilize two of these anthropogenically created tidal wetlands to explore the sedimentary and hydrologic conditions driving wetland development from a restoration perspective. Tivoli North is an emergent freshwater tidal marsh, while Tivoli South is an intertidal mudflat with vegetation restricted to the seasonal growth of invasive water chestnut during...
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