Publications
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Atlantic sturgeon status and movement ecology in an extremely small spawning habitat: The Nanticoke River-Marshyhope Creek, Chesapeake Bay
Biotelemetry of Atlantic sturgeon Acipenser oxyrinchus oxyrinchus has exposed spawning behaviors in ever-smaller estuaries, surprising for the NW Atlantic’s largest anadromous species. Small estuary — the Nanticoke River and Marshyhope Creek (Chesapeake Bay) — spawning-run adults and their habitat affinities are described based upon direct sampling and biotelemetry for the period 2014–2018. High r
Authors
D. H. Secor, M. H. P. O'Brien, N. Coleman, A. Horne, I. Park, David C. Kazyak, D. G. Bruce, C Stence
Prototyping a methodology for long-term (1680-2100) historical-to-future landscape modeling for the conterminous United States
Land system change has been identified as one of four major Earth system processes where change has passed a destabilizing threshold. A historical record of landscape change is required to understand the impacts change has had on human and natural systems, while scenarios of future landscape change are required to facilitate planning and mitigation efforts. A methodology for modeling long-term his
Authors
Jordan Dornbierer, Steve Wika, Charles Robison, Gregory Rouze, Terry L. Sohl
Molluscan aminostratigraphy of the US Mid-Atlantic Quaternary coastal system: Implications for onshore-offshore correlation, paleochannel and barrier island evolution, and local late Quaternary sea-level history
The Quaternary record of the US Mid-Atlantic coastal system includes onshore emergent late Pleistocene shoreline deposits, offshore inner shelf and barrier island units, and paleovalleys formed during multiple glacial stage sea-level lowstands. The geochronology of this coastal system is based on uranium series, radiocarbon, amino acid racemization (AAR), and optically stimulated luminescence (OSL
Authors
John Wehmiller, Laura L. Brothers, Kelvin Ramsey, David S. Foster, C.R. Mattheus, Christopher Hein, Justin L. Shawler
Quantifying slopes as a driver of forest to marsh conversion using geospatial techniques: Application to Chesapeake Bay coastal-plain, USA
Coastal salt marshes, which provide valuable ecosystem services such as flood mitigation and carbon sequestration, are threatened by rising sea level. In response, these ecosystems migrate landward, converting available upland into salt marsh. In the coastal-plain surrounding Chesapeake Bay, United States, conversion of coastal forest to salt marsh is well-documented and may offset salt marsh loss
Authors
Grace Damore Molino, Zafer Defne, Alfredo Aretxabaleta, Neil K. Ganju, Joel A. Carr
Evaluating low flow patterns, drivers and trends in the Delaware River Basin
In the humid, temperate Delaware River Basin (DRB) where water availability is generally reliable, summer low flows can cause competition between various human and ecological water uses. As temperatures continue to rise, population increases and development expands, it is critical to understand historical low flow variability to anticipate and plan for future flows. Using a sample of 325 U.S. Geol
Authors
John C. Hammond, Brandon Fleming
Simulation of groundwater flow in the aquifer system of the Anacostia River and surrounding watersheds, Washington, D.C., Maryland, and Virginia
The U.S. Geological Survey, in cooperation with the District Department of Energy & Environment, Water Quality Division, is investigating the hydrogeology of the tidal Anacostia River watershed within Washington, D.C., with the goal of improving understanding of the groundwater-flow system and the interaction of groundwater and surface water in the watershed. To help meet this goal, a three-dimens
Authors
Jeff P. Raffensperger, Lois M. Voronin, Cheryl A. Dieter
Sea-level rise enhances carbon accumulation in United States tidal wetlands
Coastal wetlands accumulate soil carbon more efficiently than terrestrial systems, but sea level rise potentially threatens the persistence of this prominent carbon sink. Here, we combine a published dataset of 372 soil carbon accumulation rates from across the United States with new analysis of 131 sites in coastal Louisiana and find that the rate of relative sea level rise (RSLR) explains 80% of
Authors
Ellen Herbert, Lisamarie Windham-Myers, Matthew L. Kirwan
Piping plovers demonstrate regional differences in nesting habitat selection patterns along the U.S. Atlantic coast
Habitat studies that encompass a large portion of a species’ geographic distribution can explain characteristics that are either consistent or variable, further informing inference from more localized studies and improving management successes throughout the range. We identified landscape characteristics at Piping Plover nests at 21 sites distributed from Massachusetts to North Carolina and compar
Authors
Sara Lynn Zeigler, Benjamin T. Gutierrez, Anne Hecht, Nathaniel Plant, Emily J. Sturdivant
Atmospheric nitrogen deposition in the Chesapeake Bay watershed: A history of change
The Chesapeake Bay watershed has been the focus of pioneering studies of the role of atmospheric nitrogen (N) deposition as a nutrient source and driver of estuarine trophic status. Here, we review the history and evolution of scientific investigations of the role of atmospheric N deposition, examine trends from wet and dry deposition networks, and present century-long (1950–2050) atmospheric N de
Authors
Douglas A. Burns, Gopal Bhatt, Lewis C. Linker, Jesse Bash, Paul Capel, Gary W. Shenk
Environmental and anthropogenic drivers of contaminants in agricultural watersheds with implications for land management
If not managed properly, modern agricultural practices can alter surface and groundwater quality and drinking water resources resulting in potential negative effects on aquatic and terrestrial ecosystems. Exposure to agriculturally derived contaminant mixtures has the potential to alter habitat quality and negatively affect fish and other aquatic organisms. Implementation of conservation practices
Authors
Kelly L. Smalling, Olivia Devereux, Stephanie Gordon, Patrick J. Phillips, Vicki S. Blazer, Michelle Hladik, Dana W. Kolpin, Michael T. Meyer, Adam Sperry, Tyler Wagner
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, California Water Science Center, Central Midwest Water Science Center, Chesapeake Bay Activities, Eastern Ecological Science Center, Kansas Water Science Center, New Jersey Water Science Center, New York Water Science Center, Pennsylvania Water Science Center
Modeling estrogenic activity in streams throughout the Potomac and Chesapeake Bay watersheds
Endocrine-disrupting compounds (EDCs), specifically estrogenic endocrine-disrupting compounds, vary in concentration and composition in surface waters under the influence of different landscape sources and landcover gradients. Estrogenic activity in surface waters may lead to adverse effects in aquatic species at both individual and population levels, often observed through the presence of interse
Authors
Stephanie Gordon, Daniel Jones, Vicki S. Blazer, Luke R. Iwanowicz, Brianna Williams, Kelly Smalling
Nutrient trends and drivers in the Chesapeake Bay Watershed
The Chesapeake Bay Program maintains an extensive nontidal monitoring network, measuring nitrogen and phosphorus (nutrients) at more than 100 locations on rivers and streams in the watershed. Data from these locations are used by United States Geological Survey to assess the ecosystem’s response to nutrient-reduction efforts. This fact sheet summarizes recent trends in nitrogen and phosphorus in n
Authors
Kenneth Hyer, Scott W. Phillips, Scott W. Ator, Doug L. Moyer, James S. Webber, Rachel Felver, Jennifer L. Keisman, Lee A. McDonnell, Rebecca Murphy, Emily M. Trentacoste, Qian Zhang, William C. Dennison, Sky Swanson, Brianne Walsh, Jane Hawkey, Dylan Taillie