Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10351
A new parameterization for estimating co‐occurrence of interacting species A new parameterization for estimating co‐occurrence of interacting species
Models currently used to estimate patterns of species co‐occurrence while accounting for errors in detection of species can be difficult to fit when the effects of covariates on species occurrence probabilities are included. The source of the estimation problems is the particular parameterization used to specify species co‐occurrence probability. We develop a new parameterization for...
Authors
J. Hardin Waddle, Robert M. Dorazio, Susan C. Walls, Kenneth G. Rice, Jeff Beauchamp, Melinda J. Schuman, Frank J. Mazzotti
The 7Q10 in South Carolina water-quality regulation: Nearly fifty years later The 7Q10 in South Carolina water-quality regulation: Nearly fifty years later
The annual minimum 7-day average streamflow with a 10-year recurrence interval, often referred to as the 7Q10, has a long history of being an important low-flow statistic used in water-quality management in South Carolina as evidenced by its adoption into South Carolina law in 1967. State agencies, such as the South Carolina Department of Health and Environmental Control and the South...
Authors
Toby D. Feaster, Wade M. Cantrell
Inter-nesting habitat-use patterns of loggerhead sea turtles: Enhancing satellite tracking with benthic mapping Inter-nesting habitat-use patterns of loggerhead sea turtles: Enhancing satellite tracking with benthic mapping
The loggerhead sea turtle Caretta caretta faces declining nest numbers and bycatches from commercial longline fishing in the southeastern USA. Understanding spatial and temporal habitat-use patterns of these turtles, especially reproductive females in the neritic zone, is critical for guiding management decisions. To assess marine turtle habitat use within the Dry Tortugas National Park...
Authors
Kristen M. Hart, David G. Zawada, Ikuko Fujisaki, Barbara H. Lidz
A comparison of litter production in young and old baldcypress (Taxodium distichum L.) stands at Caddo Lake, Texas A comparison of litter production in young and old baldcypress (Taxodium distichum L.) stands at Caddo Lake, Texas
Aboveground primary productivity for cypress forests was assessed from measurements of litter production in two age groups and in two hydrological regimes (standing water and free-flowing). Caddo Lake, located in northeast Texas on the Texas-Louisiana border, offered a unique study site since it is dominated by extensive stands composed entirely of Taxodium distichum (L.) Rich,...
Authors
John W. McCoy, Rassa O. Draugelis-Dale, Bobby D. Keeland, Roy Darville
Words matter: Recommendations for clarifying coral disease nomenclature and terminology Words matter: Recommendations for clarifying coral disease nomenclature and terminology
Coral diseases have caused significant losses on Caribbean reefs and are becoming a greater concern in the Pacific. Progress in coral disease research requires collaboration and communication among experts from many different disciplines. The lack of consistency in the use of terms and names in the recent scientific literature reflects the absence of an authority for naming coral...
Authors
Caroline S. Rogers
Low-flow frequency and flow duration of selected South Carolina streams in the Broad River basin through March 2008 Low-flow frequency and flow duration of selected South Carolina streams in the Broad River basin through March 2008
In 2008, the U.S. Geological Survey, in cooperation with the South Carolina Department of Health and Environmental Control, initiated a study to update low-flow statistics at continuous-record streamgaging stations operated by the U.S. Geological Survey in South Carolina. This report presents the low-flow statistics for 23 selected streamgaging stations in the Broad River basin in South...
Authors
Wladmir B. Guimaraes, Toby D. Feaster
Occurrence of organic wastewater-indicator compounds in urban streams of the Atlanta area, Georgia, 2003-2006 Occurrence of organic wastewater-indicator compounds in urban streams of the Atlanta area, Georgia, 2003-2006
Between March 2003 and January 2006, 863 water samples were collected from streams in seven urban watersheds with varying land uses within or near the City of Atlanta, Georgia. Sixty-four sampling sites representing three site types were established in those watersheds. The first type consisted of sites within three watersheds not affected by combined sewer overflows; these were...
Authors
Stephen J. Lawrence, Jacob H. LaFontaine
Southeast Regional Assessment Project for the National Climate Change and Wildlife Science Center, U.S. Geological Survey Southeast Regional Assessment Project for the National Climate Change and Wildlife Science Center, U.S. Geological Survey
The Southeastern United States spans a broad range of physiographic settings and maintains exceptionally high levels of faunal diversity. Unfortunately, many of these ecosystems are increasingly under threat due to rapid human development, and management agencies are increasingly aware of the potential effects that climate change will have on these ecosystems. Natural resource managers...
Authors
Melinda S. Dalton, Sonya A. Jones
Fish population dynamics in a seasonally varying wetland Fish population dynamics in a seasonally varying wetland
Small fishes in seasonally flooded environments such as the Everglades are capable of spreading into newly flooded areas and building up substantial biomass. Passive drift cannot account for the rapidity of observed population expansions. To test the reaction-diffusion mechanism for spread of the fish, we estimated their diffusion coefficient and applied a reaction-diffusion model. This...
Authors
Donald L. DeAngelis, Joel C. Trexler, Chris Cosner, Adam Obaza, Fred Jopp
Climate change effects on an endemic-rich edaphic flora: resurveying Robert H. Whittaker's Siskiyou sites (Oregon, USA) Climate change effects on an endemic-rich edaphic flora: resurveying Robert H. Whittaker's Siskiyou sites (Oregon, USA)
Species with relatively narrow niches, such as plants restricted (endemic) to particular soils, may be especially vulnerable to extinction under a changing climate due to the enhanced difficulty they face in migrating to suitable new sites. To test for community-level effects of climate change, and to compare such effects in a highly endemic-rich flora on unproductive serpentine soils vs...
Authors
Ellen Ingman Damschen, Susan Harrison, James B. Grace
Physiological response of wild dugongs (Dugong dugon) to out-of-water sampling for health assessment Physiological response of wild dugongs (Dugong dugon) to out-of-water sampling for health assessment
The dugong (Dugong dugon) is a vulnerable marine mammal with large populations living in urban Queensland waters. A mark-recapture program for wild dugongs has been ongoing in southern Queensland since 2001. This program has involved capture and in-water sampling of more than 700 dugongs where animals have been held at the water surface for 5 min to be gene-tagged, measured, and biopsied...
Authors
Janet M. Lanyon, Helen L. Sneath, Trevor Long, Robert K. Bonde
Challenges and opportunities for integrating lake ecosystem modelling approaches Challenges and opportunities for integrating lake ecosystem modelling approaches
A large number and wide variety of lake ecosystem models have been developed and published during the past four decades. We identify two challenges for making further progress in this field. One such challenge is to avoid developing more models largely following the concept of others (‘reinventing the wheel’). The other challenge is to avoid focusing on only one type of model, while...
Authors
Wolf M. Mooij, Dennis Trolle, Erik Jeppesen, George Arhonditsis, Pavel V. Belolipetsky, Deonatus B.R. Chitamwebwa, Andrey G. Degermendzhy, Donald L. DeAngelis, Lisette N. De Senerpont Domis, Andrea S. Downing, J. Alex Elliott, Carlos Ruberto Fragoso, Ursula Gaedke, Svetlana N. Genova, Ramesh D. Gulati, Lars Hakanson, David P. Hamilton, Matthew R. Hipsey, Jochem ’t Hoen, Stephan Hulsmann, F. Hans Los, Vardit Makler-Pick, Thomas Petzoldt, Igor G. Prokopkin, Karsten Rinke, Sebastiaan A. Schep, Koji Tominaga, Anne A. Van Dam, Egbert H. Van Nes, Scott A. Wells, Jan H. Janse