Ecologist (Research)
Email:
eward@usgs.gov
Office Phone:
337-266-8515
ORCID:
0000-0002-5047-5464
Location
700 Cajundome Blvd.
Lafayette
, LA
70506
US
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J.N. “Ding” Darling National Wildlife Refuge (DDNWR) is located on Sanibel Island along the southwestern coast of Florida, USA. Sanibel Island is heavily developed, but DDNWR provides protection for a large mangrove area that supports biodiversity and recreational opportunity. However, nitrogen (N) and phosphorus (P) eutrophication attributed to agriculture discharge along the Caloosahatchee River has affected the area’s aquatic habitat with algal blooms and may be causing untimely degradation of Sanibel’s mangrove forests. We launched a series of studies to understand how additional nutrient loading to the levels expected in the future might affect DDNWR’s mangrove resource. We experimentally fertilized selected...
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The Science Issue and Relevance: Coastal wetlands are some of the most productive and valuable habitats in the world. Louisiana contains 40% of the United States’ coastal wetlands, which provide critical habitat for waterfowl and fisheries, as well as many other benefits, such as storm surge protection for coastal communities. In terms of ecosystem services, biological resource production, and infrastructure investments, the value of Louisiana’s coastal wetlands exceeds $100 billion. Thus, stakeholders are gravely concerned about sea-level rise which is causing coastal marsh habitat to convert to open water and resulting in the highest rates of wetland loss in the world, with nearly 1.2 million acres lost since...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2020,
CASC,
Completed,
Projects by Region,
Rivers, Streams and Lakes, All tags...
Sea-Level Rise and Coasts,
Sea-Level Rise and Coasts,
South Central,
South Central CASC,
Water, Coasts and Ice,
Water, Coasts and Ice,
Wetlands,
Wetlands, Fewer tags
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This dataset provides the water content, bulk density, carbon concentrations, nitrogen concentrations, and carbon content of all fourteen cores sampled in coastal Louisiana (CRMS 0224) in October of 2019. Each sample is identified by a unique identifier that corresponds to each site by depth increment combination. The pond age range associated with each site is provided. The depth increment associated with each sample is provided.
Categories: Data;
Tags: Ecology,
Louisiana,
Mississippi River Delta,
Soil Sciences,
USGS Science Data Catalog (SDC), All tags...
United States,
carbon cycling,
ecological processes,
environment,
sea-level change,
wetland ecosystems, Fewer tags
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This dataset contains the result of simulated daily emissions of methane (CH4) and nitrous oxide (N2O) from the soils in Tidal Freshwater Forested Wetlands (TFFW) along the Waccamaw River (SC, USA) and the Savannah River (GA and SC, USA) under drought-induced saltwater intrusion using a process-driven biogeochemistry model.
Categories: Data;
Tags: Chatham,
Ecology,
Effingham,
Forestry,
Forestry, All tags...
Georgetown,
Georgia,
Hydrology,
Hydrology,
Jasper,
Savannah River Basin,
South Carolina,
USGS Science Data Catalog (SDC),
United States,
Waccamaw River Basin,
coastal wetlands,
wetland ecosystems, Fewer tags
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Abstract (from Nature): “Blue carbon” wetland vegetation has a limited freshwater requirement. One type, mangroves, utilizes less freshwater during transpiration than adjacent terrestrial ecoregions, equating to only 43% (average) to 57% (potential) of evapotranspiration (ET). Here, we demonstrate that comparative consumptive water use by mangrove vegetation is as much as 2905 kL H2O ha−1 year−1 less than adjacent ecoregions with Ec-to-ET ratios of 47–70%. Lower porewater salinity would, however, increase mangrove Ec-to-ET ratios by affecting leaf-, tree-, and stand-level eco-physiological controls on transpiration. Restricted water use is also additive to other ecosystem services provided by mangroves, such as...
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