Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10379
Effects of sediment burial on grass carp, Ctenopharyngodon idella (Valenciennes,1844), eggs Effects of sediment burial on grass carp, Ctenopharyngodon idella (Valenciennes,1844), eggs
It is thought that grass carp (Ctenopharyngodon idella) eggs must remain suspended in the water column in order to hatch successfully. Using sand, the effects of varying sediment levels on grass carp eggs were tested at different developmental states and temperatures. Survival was high (15–35%, depending on temperature and trial) in the unburied treatment where eggs rested on a sand bed...
Authors
Amy E. George, Duane Chapman, Joseph E. Deters, Susannah O. Erwin, Cari-Ann Hayer
Complex mixtures, complex responses: Assessing pharmaceutical mixtures using field and laboratory approaches Complex mixtures, complex responses: Assessing pharmaceutical mixtures using field and laboratory approaches
Pharmaceuticals are present in low concentrations (
Authors
Heiko L. Schoenfuss, Edward T. Furlong, Patrick J. Phillips, Tia-Marie Scott, Dana W. Kolpin, Marina Cetkovic-Cvrlje, Kelsey E. Lesteberg, Daniel C. Rearick
NEXRAD quantitative precipitation estimates, data acquisition, and processing for the DuPage County, Illinois, streamflow-simulation modeling system NEXRAD quantitative precipitation estimates, data acquisition, and processing for the DuPage County, Illinois, streamflow-simulation modeling system
Next-Generation Radar (NEXRAD) has become an integral component in the estimation of precipitation (Kitzmiller and others, 2013). The high spatial and temporal resolution of NEXRAD has revolutionized the ability to estimate precipitation across vast regions, which is especially beneficial in areas without a dense rain-gage network. With the improved precipitation estimates, hydrologic...
Authors
Terry W. Ortel, Ryan R. Spies
Development of an Assessment Tool for Agricultural Best Management Practice Implementation in the Great Lakes Restoration Initiative Priority Watersheds—Eagle Creek, Tributary to Maumee River, Ohio Development of an Assessment Tool for Agricultural Best Management Practice Implementation in the Great Lakes Restoration Initiative Priority Watersheds—Eagle Creek, Tributary to Maumee River, Ohio
Introduction The Great Lakes face a number of serious challenges that cause damage to water quality, habitat, ecology, and coastal health. Excess nutrients from point and nonpoint sources have a history of causing harmful algal blooms (HABs); since the late 1990s, a resurgence of HABs have forced beach closures and resulted in water quality impairments across the Great Lakes. Studies...
Authors
Katherine R. Merriman
Development of an Assessment Tool for Agricultural Best Management Practice Implementation in the Great Lakes Restoration Initiative Priority Watersheds—Upper East River, Tributary to Green Bay, Wisconsin Development of an Assessment Tool for Agricultural Best Management Practice Implementation in the Great Lakes Restoration Initiative Priority Watersheds—Upper East River, Tributary to Green Bay, Wisconsin
Introduction The Great Lakes face a number of serious challenges that cause damage to water quality, habitat, ecology, and coastal health. Excess nutrients from point and nonpoint sources have a history of causing harmful algal blooms (HABs); since the late 1990s, a resurgence of HABs have forced beach closures and resulted in water quality impairments across the Great Lakes. Studies...
Authors
Katherine R. Merriman
Development of an Assessment Tool for Agricultural Best Management Practice Iimplementation in the Great Lakes Restoration Initiative Priority Watersheds—Alger Creek, Tributary to Saginaw River, Michigan Development of an Assessment Tool for Agricultural Best Management Practice Iimplementation in the Great Lakes Restoration Initiative Priority Watersheds—Alger Creek, Tributary to Saginaw River, Michigan
The Great Lakes face a number of serious challenges that cause damage to water quality, habitat, ecology, and coastal health. Excess nutrients from point and nonpoint sources have a history of causing harmful algal blooms (HABs); since the late 1990s, a resurgence of HABs have forced beach closures and resulted in water quality impairments across the Great Lakes. Studies increasingly...
Authors
Katherine R. Merriman
Determining habitat quality for species that demonstrate dynamic habitat selection Determining habitat quality for species that demonstrate dynamic habitat selection
Determining habitat quality for wildlife populations requires relating a species' habitat to its survival and reproduction. Within a season, species occurrence and density can be disconnected from measures of habitat quality when resources are highly seasonal, unpredictable over time, and patchy. Here we establish an explicit link among dynamic selection of changing resources, spatio...
Authors
James M. Beerens, Peter C Frederick, Erik G Noonburg, Dale E. Gawlik
The relationship between the ratio of strontium to calcium and sea-surface temperature in a modern Porites astreoides coral: Implications for using P. astreoides as a paleoclimate archive The relationship between the ratio of strontium to calcium and sea-surface temperature in a modern Porites astreoides coral: Implications for using P. astreoides as a paleoclimate archive
An inverse relationship has been demonstrated between water temperature and the ratio of strontium to calcium (Sr/Ca) in coral aragonite for a number of Pacific species of the genus Porites. This empirically determined relationship has been used to reconstruct past sea-surface temperature (SST) from modern and Holocene age coral archives. A study was conducted to investigate this...
Authors
Tess E. Busch, Jennifer A. Flannery, Julie N. Richey, Anastasios Stathakopoulos
Synthetic ultraviolet light filtering chemical contamination of coastal waters of Virgin Islands National Park, St. John, U.S. Virgin Islands Synthetic ultraviolet light filtering chemical contamination of coastal waters of Virgin Islands National Park, St. John, U.S. Virgin Islands
Contamination of surface waters by synthetic ultraviolet light (UV) filtering chemicals is a concern for the Virgin Islands National Park (VINP). Discrete water samples were collected from VINP bays to determine UV filter chemical presence in the coastal waters. Spatial distribution and the potential for partitioning between subsurface waters and the sea surface microlayer (SML) were...
Authors
Timothy A. Bargar, David Alvarez, Virginia H. Garrison
Growth of common brackish marsh macrophytes under altered hydrology and salinity regimes Growth of common brackish marsh macrophytes under altered hydrology and salinity regimes
Coastal marsh plants are increasingly subject to physicochemical stressors under rising sea levels, and the maintenance of marsh ecological functions can depend on the ability of individual species and communities to tolerate or adapt to altered conditions. We conducted a greenhouse experiment to identify hydrology and salinity effects on growth of three common brackish marsh macrophytes...
Authors
Rebecca J. Howard, Janelda M. Biagas, Larry K. Allain
Home range and habitat use of juvenile green turtles (Chelonia mydas) in the northern Gulf of Mexico Home range and habitat use of juvenile green turtles (Chelonia mydas) in the northern Gulf of Mexico
Background: For imperiled marine turtles, use of satellite telemetry has proven to be an effective method in determining long distance movements. However, the large size of the tag, relatively high cost and low spatial resolution of this method make it more difficult to examine fine-scale movements of individuals, particularly at foraging grounds where animals are frequently submerged...
Authors
Margaret M. Lamont, Ikuko Fujisaki, Brail S. Stephens, Caitlin Hackett
Implications of climate change on the heat budget of lentic systems used for power station cooling: Case study Clinton Lake, Illinois Implications of climate change on the heat budget of lentic systems used for power station cooling: Case study Clinton Lake, Illinois
We use a numerical model to analyze the impact of climate change--in particular higher air temperatures--on a nuclear power station that recirculates the water from a reservoir for cooling. The model solves the hydrodynamics, the transfer of heat in the reservoir, and the energy balance at the surface. We use the numerical model to (i) quantify the heat budget in the reservoir and...
Authors
Juan C Quijano, P. Ryan Jackson, Santiago Santacruz, Viviana M Morales, Marcelo H. Garcia