Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10380
Mississippi river sediment diversions and coastal wetland sustainability: Synthesis of responses to freshwater, sediment, and nutrient inputs Mississippi river sediment diversions and coastal wetland sustainability: Synthesis of responses to freshwater, sediment, and nutrient inputs
Management and restoration of coastal wetlands require insight into how inundation, salinity, and the availability of mineral sediment and nutrients interact to influence ecosystem functions that control sustainability. The Mississippi River Delta, which ranks among the world's largest and most productive coastal wetland complexes, has experienced extensive deterioration over the last...
Authors
Tracy Elsey-Quirk, Sean A. Graham, Irving A. Mendelssohn, Gregg Snedden, John W. Day, Gary P. Shaffer, Leigh Anne Sharp, Robert R. Twilley, James Pahl, R.R. Lane
Resource concentration mechanisms facilitate foraging success in simulations of a pulsed oligotrophic wetland Resource concentration mechanisms facilitate foraging success in simulations of a pulsed oligotrophic wetland
Context Movement of prey on hydrologically pulsed, spatially heterogeneous wetlands can result in transient, high prey concentrations, when changes in landscape features such as connectivity between flooded areas alternately facilitate and impede prey movement. Predators track and exploit these concentrations, depleting them as they arise. Objectives We sought to describe how prey pulses...
Authors
Simeon Yurek, Donald L. DeAngelis
Invasive plant species Invasive plant species
Invasive species may be one of the worts environmental problems facing the conservation of natural areas, because of their role in changing ecosystem function. At the same time, invasive species cause much human suffering and economic loss. The approach to eliminating invasive species can be improved by a better understanding of the various types of invasive species, and the scientific...
Authors
Beth A. Middleton
Flood-inundation maps for Lake Champlain in Vermont and New York Flood-inundation maps for Lake Champlain in Vermont and New York
In 2016, digital flood-inundation maps along the shoreline of Lake Champlain in Addison, Chittenden, Franklin, and Grand Isle Counties in Vermont and northern Clinton County in New York were created by the U.S. Geological Survey (USGS) in cooperation with the International Joint Commission (IJC). This report discusses the creation of updated static digital flood-inundation mapping, in...
Authors
Robert H. Flynn, Laura Hayes
Florida Coastal Mapping Program—Overview and 2018 workshop report Florida Coastal Mapping Program—Overview and 2018 workshop report
The Florida Coastal Mapping Program is a nascent but highly relevant program that has the potential to greatly enhance the “Blue Economy” of Florida by coordinating and facilitating sea-floor mapping efforts and aligning partner and stakeholder activities for increased efficiency and cost reduction. Sustained acquisition of modern coastal mapping information for Florida may improve...
Authors
Cheryl J. Hapke, Philip A. Kramer, Elizabeth H. Fetherston-Resch, Rene D. Baumstark, Ryan Druyor, Xan Fredericks, Ekaterina Fitos
Coastal habitat change and marine megafauna behavior: Florida manatees encountering reduced food provisions in a prominent winter refuge Coastal habitat change and marine megafauna behavior: Florida manatees encountering reduced food provisions in a prominent winter refuge
A decline in submerged aquatic vegetation (SAV) within Florida’s spring-fed thermal refuges raises questions about how these systems support winter foraging of Florida manatees Trichechus manatus latirostris. We analyzed telemetry data for 12 manatees over 7 yr to assess their use of Kings Bay, a winter refuge with diminished SAV. After accounting for the effect of water temperature, we
Authors
Chanda J. Littles, Robert K. Bonde, Susan M. Butler, Charles A. Jacoby, Sky K. Notestein, James P. Reid, Daniel H. Slone, Thomas K. Frazer
Unprocessed atmospheric nitrate in waters of the Northern Forest Region in the USA and Canada Unprocessed atmospheric nitrate in waters of the Northern Forest Region in the USA and Canada
Little is known about the regional extent and variability of nitrate from atmospheric deposition that is transported to streams without biological processing in forests. We measured water chemistry and isotopic tracers (δ18O and δ15N) of nitrate sources across the Northern Forest Region of the U.S. and Canada and reanalyzed data from other studies to determine when, where, and how...
Authors
Stepen D Sebestyen, Donald D Ross, James B. Shanley, Emily M. Elliott, Carol Kendall, John L. Campbell, D Bryan Dail, Ivan J Fernandez, Christine L Goodale, Gregory B. Lawrence, Gary M. Lovett, Patrick J McHale, Myron J Mitchell, Sarah J. Nelson, Michelle D Shattuck, Trent R Wickman, Rebecca T. Barnes, Joel T. Bostic, Anthony R Buda, Douglas A Burns, Keith N. Eshleman, Jacques C. Finlay, David M. Nelson, Nobuhito Ohte, Linda H Pardo, Lucy A Rose, Robert J Sabo, Sherry L. Schiff, John Spoelstra, Karl W Williard
The plant diversity sampling design for The National Ecological Observatory Network The plant diversity sampling design for The National Ecological Observatory Network
The National Ecological Observatory Network (NEON) is designed to facilitate an understanding of the impact of environmental change on ecological systems. Observations of plant diversity—responsive to changes in climate, disturbance, and land use, and ecologically linked to soil, biogeochemistry, and organisms—result in NEON data products that cross a range of organizational levels...
Authors
David T. Barnett, Peter B. Adler, Benjamin R. Chemel, Paul A. Duffy, Brian J. Enquist, James B. Grace, Susan P. Harrison, Robert K. Peet, David S. Schimel, Thomas J. Stohlgren, Mark Vellend
Influence of salinity on relative density of American crocodiles (Crocodylus acutus) in Everglades National Park: Implications for restoration of Everglades ecosystems Influence of salinity on relative density of American crocodiles (Crocodylus acutus) in Everglades National Park: Implications for restoration of Everglades ecosystems
The status of the American crocodile (Crocodylus acutus) has long been a matter of concern in Everglades National Park (ENP) due to its classification as a federal and state listed species, its recognition as a flagship species, and its function as an ecosystem indicator. Survival and recovery of American crocodiles has been linked with regional hydrological conditions, especially...
Authors
Frank J. Mazzotti, Brian Smith, Michiko Squires, Michael S. Cherkiss, Seth C Farris, Caitlin Hackett, Kristen M. Hart, Venetia Briggs-Gonzalez, Laura A. Brandt
Adjudicating groundwater: A judge’s guide to understanding groundwater and modeling Adjudicating groundwater: A judge’s guide to understanding groundwater and modeling
Dividing the Waters offers this groundwater science bench book that cannot be matched by any other scientific or judicial publication. Adjudicating Groundwater combines the expertise and experience of academic scientists (UC Davis/Stanford), federal scientists (U.S. Geological Survey), and judicial officers to create a resource that can fulfill the needs of judges tackling the most...
Authors
Thomas Harter, Tara Moran, Eric Wildman
Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate
In response to warming winter air temperatures, freeze-sensitive mangrove forests are expected to expand at the expense of freeze-tolerant salt marshes. To better anticipate and prepare for mangrove range expansion, there is a need to advance understanding of the modulating role of microclimate. Here, we synthesized hypotheses regarding the effects of microclimatic variation on...
Authors
Michael J. Osland, Arik M. Hartmann, Richard H. Day, Michael S. Ross, Courtney T. Hall, Laura C. Feher, William Vervaeke
Deep search: Deep sea exploration to advance research on coral/canyon/cold seep habitats Deep search: Deep sea exploration to advance research on coral/canyon/cold seep habitats
Led by the Bureau of Ocean Energy Management (BOEM), the United States Geological Survey (USGS), and OER is an interagency partnership to explore and characterize sensitive deepwater habitats of the U.S. mid- and south Atlantic deep-sea habitats. Sponsored by the National Oceanographic Partnership Program, the study has brought together scientists from six U.S. academic institutions and...
Authors
Erik E. Cordes, Amanda W.J. Demopoulos, Michael Rasser, Caitlin Adams