Filters: partyWithName: U.S. Geological Survey (X) > partyWithName: Camille L Stagg (X)

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Early growth interactions between a mangrove and an herbaceous salt marsh species are not affected by elevated CO2 or drought, Louisiana saltmarsh, 2015 In recent decades the encroachment of woody mangrove species into herbaceous marshes has been documented along the U.S. northern Gulf of Mexico coast. These species shifts have been attributed primarily to rising sea levels and warming winter temperatures, but the role of elevated atmospheric carbon dioxide (CO2) and water availability may become more prominent drivers of species interactions under future climate conditions. In this greenhouse study we examined the effects of CO2 concentration (ambient, elevated) and water regime (drought, saturated, flooded) on early growth of the mangrove species Avicennia germinans and Spartina alterniflora, a herbaceous grass. Categories: Data; Tags: Avicennia germinans, Biota, Botany, Ecology, Lafayette, La, All tags... Louisiana, Spartina alterniflora, USGS Science Data Catalog (SDC), atmospheric carbon dioxide, drought, greenhouse experiment, greenhouse gases, mangrove encroachment, mangroves, salt marshes, species interactions, vegetation, water availability, Fewer tags Modeling soil pore water salinity response to drought in tidal freshwater forested wetlands Model generated soil pore water salinity (psu) values under scenarios of drought and normal conditions at Tidal Freshwater Forested Wetlands (TFFW) sites along the Waccamaw River and Savannah River in the Southeastern United States. Categories: Data; Tags: Coastal environment, Droughts, Ecology, Evapotranspiration, Forested wetlands, All tags... Georgia, Hydrogeology, ISO 19115 Topic Category, Saline intrusion, Savannah River, Soil Sciences, Soil salinity, South Carolina, USA, USGS Science Data Catalog (SDC), Waccamaw River, Fewer tags Modeling impacts of drought-induced salinity intrusion on carbon fluxes and storage in tidal freshwater forested wetlands A biogeochemistry model was developed to examine plant gross primary productivity (GPP), net primary productivity (NPP), plant respiration, soil respiration, soil organic carbon sequestration rate and storage under scenarios of drought and normal conditions at Tidal Freshwater Forested Wetlands (TFFW) sites along the Waccamaw River and Savannah River in the Southeastern United States. Categories: Data; Tags: Chatham, Ecology, Effingham, Georgetown, Georgia, All tags... Jasper, Savannah National Wildlife Refuge, South Carolina, USGS Science Data Catalog (SDC), United States, Waccamaw National Wildlife Refuge, coastal wetlands, wetland ecosystems, Fewer tags Organic matter decomposition along coastal wetland landscape gradient from tidal freshwater forested wetland to oligohaline marsh in Southeastern U.S.A. (2010-2011) Coastal wetlands significantly contribute to global carbon storage potential. Sea-level rise and other climate change-induced disturbances threaten coastal wetland sustainability and carbon storage capacity. It is critical that we understand the mechanisms controlling wetland carbon loss so that we can predict and manage these resources in anticipation of climate change. Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Georgia, Savannah River, Soil organic matter, South Carolina, USGS Science Data Catalog (SDC), All tags... Waccamaw River, carbon, causal model, decomposition, drought, flooding, hurricane, oligohaline marsh, salinity, sea-level rise, structural equation model, tidal freshwater forested wetlands, Fewer tags