Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10351
A new indicator framework for quantifying the intensity of the terrestrialwater cycle A new indicator framework for quantifying the intensity of the terrestrialwater cycle
A quantitative framework for characterizing the intensity of the water cycle over land is presented, and illustrated using a spatially distributed water-balance model of the conterminous United States (CONUS). We approach water cycle intensity (WCI) from a landscape perspective; WCI is defined as the sum of precipitation (P) and actual evapotranspiration (AET) over a spatially explicit...
Authors
Thomas G. Huntington, Peter Weiskel, David M. Wolock, Gregory J. McCabe
High frequency data exposes nonlinear seasonal controls on dissolved organic matter in a large watershed High frequency data exposes nonlinear seasonal controls on dissolved organic matter in a large watershed
We analyzed a five year, high frequency time series generated by an in situ fluorescent dissolved organic matter (fDOM) sensor installed near the Connecticut River’s mouth, investigating high temporal resolution DOM dynamics in a larger watershed and longer time series than previously addressed. We identified a gradient between large, saturating summer fDOM responses to discharge and...
Authors
Matthew Shultz, Brian A. Pellerin, George Aiken, Joseph W. Martin, Peter Raymond
Sperm quality biomarkers complement reproductive and endocrine parameters in investigating environmental contaminants in common carp (Cyprinus carpio) from the Lake Mead National Recreation Area Sperm quality biomarkers complement reproductive and endocrine parameters in investigating environmental contaminants in common carp (Cyprinus carpio) from the Lake Mead National Recreation Area
Lake Mead National Recreational Area (LMNRA) serves as critical habitat for several federally listed species and supplies water for municipal, domestic, and agricultural use in the Southwestern U.S. Contaminant sources and concentrations vary among the sub-basins within LMNRA. To investigate whether exposure to environmental contaminants is associated with alterations in male common carp...
Authors
Jill A. Jenkins, Michael R. Rosen, Rassa O. Dale, Kathy R. Echols, Leticia Torres, Carla M. Wieser, Constance A. Kersten, S. Goodbred
Springs as hydrologic refugia in a changing climate? A remote sensing approach Springs as hydrologic refugia in a changing climate? A remote sensing approach
Spring‐fed wetlands are ecologically important habitats in arid and semi‐arid regions. Springs have been suggested as possible hydrologic refugia from droughts and climate change; however, springs that depend on recent precipitation or snowmelt for recharge may be vulnerable to warming and drought intensification. Springs that are expected to maintain their ecohydrologic function in a...
Authors
Jennifer M. Cartwright, Henry M. Johnson
The bees (Hymenoptera: Apoidea) of Louisiana: an updated, annotated checklist The bees (Hymenoptera: Apoidea) of Louisiana: an updated, annotated checklist
An annotated checklist is provided for 243 species and subspecies of bees collected from or thought to occur in the state of Louisiana, where 163 are confirmed records, 46 are probable records, and 34 are possible records. We also list twelve records considered to be “dubious” because of the absence of supporting collection data and extralimital reported ranges. Data on parish localities
Authors
Brittany E. Owens, Larry K. Allain, Eric C. VanGorder, Janice L. Bossart, Christopher E. Carlton
A North American Hydroclimate Synthesis (NAHS) of the Common Era A North American Hydroclimate Synthesis (NAHS) of the Common Era
This study presents a synthesis of century-scale hydroclimate variations in North America for the Common Era (last 2000 years) using new age models of previously published multiple proxy-based paleoclimate data. This North American Hydroclimate Synthesis (NAHS) examines regional hydroclimate patterns and related environmental indicators, including vegetation, lake water elevation, stream...
Authors
Jessica R. Rodysill, Lesleigh Anderson, Thomas M. Cronin, Miriam C. Jones, Robert S. Thompson, David B. Wahl, Debra A. Willard, Jason A. Addison, Jay R. Alder, Katherine H. Anderson, Lysanna Anderson, John A. Barron, Christopher E. Bernhardt, Steven W. Hostetler, Natalie M. Kehrwald, Nicole Khan, Julie N. Richey, Scott W. Starratt, Laura E. Strickland, Michael Toomey, Claire C. Treat, G. Lynn Wingard
By
Water Resources Mission Area, Ecosystems Land Change Science Program, Energy Resources Program, Groundwater and Streamflow Information Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Florence Bascom Geoscience Center, Geology, Minerals, Energy, and Geophysics Science Center, Geosciences and Environmental Change Science Center, St. Petersburg Coastal and Marine Science Center
The Ozark Plateaus Regional Aquifer Study—Documentation of a groundwater-flow model constructed to assess water availability in the Ozark Plateaus The Ozark Plateaus Regional Aquifer Study—Documentation of a groundwater-flow model constructed to assess water availability in the Ozark Plateaus
Recent short-term drought conditions have emphasized the need to better understand the delicate balance between abundance, sustainability, and scarcity of groundwater in the Ozark Plateaus aquifer system. In 2014, the U.S. Geological Survey began construction of a groundwater-flow model as a tool for the assessment of groundwater availability in the Ozark Plateaus aquifer system. The...
Authors
Brian R. Clark, Joseph M. Richards, Katherine J. Knierim
Risk factors associated with mortality of age-0 Smallmouth Bass in the Susquehanna River basin, Pennsylvania Risk factors associated with mortality of age-0 Smallmouth Bass in the Susquehanna River basin, Pennsylvania
Evidence of disease and mortalities of young of the year (age‐0) Smallmouth Bass Micropterus dolomieu has occurred during the late spring and summer in many parts of the Susquehanna River watershed since 2005. To better understand contributing factors, fish collected from multiple areas throughout the watershed as well as out‐of‐basin reference populations (Allegheny and Delaware River...
Authors
Heather L. Walsh, Vicki S. Blazer, Geoffrey Smith, Michael Lookenbill, David A. Alvarez, Kelly L. Smalling
Influence of governance structure on green stormwater infrastructure investment Influence of governance structure on green stormwater infrastructure investment
Communities are faced with the challenge of meeting regulatory requirements mandating reductions in water pollution from stormwater and combined sewer overflows (CSO). Green stormwater infrastructure and gray stormwater infrastructure are two types of water management strategies communities can use to address water pollution. In this study, we used long-term control plans from 25 U.S...
Authors
Kristina G. Hopkins, Nancy B. Grimm, Abigail M. York
Microspatial ecotone dynamics at a shifting range limit: plant–soil variation across salt marsh–mangrove interfaces Microspatial ecotone dynamics at a shifting range limit: plant–soil variation across salt marsh–mangrove interfaces
Ecotone dynamics and shifting range limits can be used to advance our understanding of the ecological implications of future range expansions in response to climate change. In the northern Gulf of Mexico, the salt marsh–mangrove ecotone is an area where range limits and ecotone dynamics can be studied in tandem as recent decreases in winter temperature extremes have allowed for mangrove...
Authors
Erik S. Yando, Michael J. Osland, Mark H. Hester
Coping with constraints: Achieving effective conservation with limited resources Coping with constraints: Achieving effective conservation with limited resources
Conservation resources have become increasingly limited and, along with social, cultural and political complexities, this shortfall frequently challenges effectiveness in conservation. Because conservation can be costly, efforts are often only initiated after a species has declined below a critical threshold and/or when statutory protection is mandated. However, implementing conservation
Authors
Susan C. Walls
Flood-inundation and flood-mitigation modeling of the West Branch Wapsinonoc Creek Watershed in West Branch, Iowa Flood-inundation and flood-mitigation modeling of the West Branch Wapsinonoc Creek Watershed in West Branch, Iowa
The U.S. Geological Survey (USGS) in cooperation with the city of West Branch and the Herbert Hoover National Historic Site of the National Park Service assessed flood-mitigation scenarios within the West Branch Wapsinonoc Creek watershed. The scenarios are intended to demonstrate several means of decreasing peak streamflows and improving the conveyance of overbank flows from the West...
Authors
Charles V. Cigrand