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Showing 1 to 20 of 79 for “"Salt Marshes"”.
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Carbon Sequestration in Tidal Salt Marshes and Mangrove Ecosystems
… carbon fixation, production and storage in tidal salt marshes and mangrove ecosystems. The results showed that both coastal wetland ecosystems types are a significant carbon pools compared to other terrestrial ecosystems. Global estimations indicated that carbon storage in coastal wetlands ranges …
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Towards Characterisation and Classification of Canadian Macrotidal Salt Marshes
… the extent, distribution, and condition of tidal marshes in Canada, they have yet to be comprehensively mapped. Existing inventories show significant overestimation of Canadian tidal marsh extent, indicating that a regional model may be required. This thesis provides a review of freely available …
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Ecological effects of ditching and ditch-plugging in New England salt marshes
<p>Anthropogenic activities in New England salt marshes have altered hydrologic flows in various ways, but unintended consequences from some of these habitat modifications have received little attention. Specifically, ditches have existed on salt marshes for decades, but the effects of these …
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The role of denitrification in the nitrogen cycle of New England salt marshes
… determine the contribution of denitrification to salt marsh sediment N cycling. Denitrification in salt marsh tidal creekbottoms is a major sink for groundwater nitrate of terrestrial origin. I studied creekbottom denitrification by direct measurements of N2 fluxes in closed chambers against a …
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Peat hydrology in two New England salt marshes : a field and model study
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1981.
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The role of denitrification in the nitrogen cycle of New England salt marshes
… determine the contribution of denitrification to salt marsh sediment N cycling. Denitrification in salt marsh tidal creekbottoms is a major sink for groundwater nitrate of terrestrial origin. I studied creekbottom denitrification by direct measurements of N₂ fluxes in closed chambers against a …
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Spatial modeling and visualization of habitat response to hydrologic restoration in New England salt marshes
… tidal flows negatively impact 20% of New England salt marshes, but management attempts to restore tides to these sites can be met with unexpected or less than optimal results. Restoration planners may be hindered by a lack of synthesized information regarding important biotic and abiotic factors …
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Impacts of the Deepwater Horizon Oil Spill on Microbial-Mediated Cellulose Decomposition in Mississippi Gulf Coast Salt Marshes
… roemerianus</em> in 9 Mississippi Gulf Coast marshes exposed to differing oiling intensities<em>.</em> The cotton strip bioassay technique was used as a proxy for cellulose decomposition. In addition, rates of microbial respiration, fungal biomass (ergosterol) and nutrients (C:N, C:P) of …
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A Study of Energy Fixation and Net Production of Plant Communities in Salt Marshes of Back River, Virginia
Made available in DSpace on 2014-12-11T18:28:19Z (GMT). No. of bitstreams: 1 7114998.pdf: 6383763 bytes, checksum: cb0bdff27af5f7f1c65d3bc63a678341 (MD5) Previous issue date: 1970
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Identifying Erosional Trends of Upper Galveston Bay Salt Marshes from 2004-2018 High Resolution Imagery: A GIS and Remote Sensing Analysis
… In a place like Galveston Bay, Texas, coastal salt marshes and residential or urban centers coexisting near one another are commonplace, so tracking the health of the marsh based on anthropogenic actions, both conservational and detrimental, is key to preserving them. In turn, the marshes …
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Density, Shell Use and Species Composition of Juvenile Fiddler Crabs (Uca Spp.) at Low and High Impact Salt Marshes on Georgia Barrier Islands
… on fiddler crabs (Uca spp.), a key species in salt marsh habitats. The present study looks at how human impacts are affecting juvenile fiddler crab densities, shell use, and species compositions. This study was conducted at 3 low and 3 high impact sites on Tybee and Skidaway Island, Georgia. …
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Effects of Elevation and Nutrient Availability On the Primary Production of Spartina Alterniflora and the Stability of Southeastern Coastal Salt Marshes Relative to Sea Level Rise
… macrophyte in Southeastern and Gulf Coast salt marshes of the United States the smooth cord grass Spartina alteriflora Loisel is responsible for maintaining the elevation of its environment, in equilibrium with sea level rise (SLR), through mineral (sediment) and biogenic accumulation. …
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Ecosystem metabolism in salt marsh tidal creeks and ponds : applying triple oxygen isotopes and other gas tracers to novel environments
Salt marshes are physically, chemically, and biologically dynamic environments found globally at temperate latitudes. Tidal creeks and marshtop ponds may expand at the expense of productive grass-covered marsh platform. It is therefore important to understand the present magnitude and drivers of …
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Ecosystem metabolism in salt marsh tidal creeks and ponds : applying triple oxygen isotopes and other gas tracers to novel environments
Salt marshes are physically, chemically, and biologically dynamic environments found globally at temperate latitudes. Tidal creeks and marshtop ponds may expand at the expense of productive grass-covered marsh platform. It is therefore important to understand the present magnitude and drivers of …
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Naturalization of Salt Marsh Restoration Sites in the Elizabeth River, Virginia, Assessed by Feeding Activity and Trophic Level of Mummichogs (<i>Fundulus Heteroclitus</i>)
… by the Chesapeake Bay Program, include several salt marsh restorations. By examining gut contents and stable isotopes values (δ13C and δ15N) from mummichogs (Fundulus heteroclitus), the functional equivalency of restored salt marshes compared to natural marshes was measured. In July 2013 I …
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Predicting Plant Zonation in the Salt and Brackish Marshes of Georgia
<p>Tidal marshes provide important economic and environmental functions. There are 1,745 km<sup>2</sup> of tidal marsh habitat along the Georgia coast that can be separated into three distinct marsh types based on salinity levels. Tidal fresh, brackish, and salt marshes occur along a gradient that …
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A study of the relationship between environmental conditions and salt marsh zonation at Langebaan Lagoon
… causal processes that generate patterns in the salt marsh communities of Langebaan Lagoon. The study area forms part of the West Coast National Park and is the largest tract of saltmarsh in South Africa. An overview of the current literature on salt marsh ecology is discussed and a synopsis of …
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Plant productivity and diversity in coastal wetlands in Mississippi – impact of hydrological extremes
… vegetation productivity and diversity in salt marshes on the neighboring Mississippi Gulf Coast, US. My study area is two estuarine systems that differ in their proximity to the Bonnet Carré Spillway, elevation, and salinity including Hancock County Marshes on the west, and Grand Bay …
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