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Publications

Publications from USGS science centers throughout the Southeast Region.

Filter Total Items: 10379

Growth stress response to sea level rise in species with contrasting functional traits: A case study in tidal freshwater forested wetlands Growth stress response to sea level rise in species with contrasting functional traits: A case study in tidal freshwater forested wetlands

With rising sea levels, mortality of glycophytes can be caused by water and nutrient stress under increasing salinity. However, the relative effects of these two stressors may vary by species-specific functional traits. For example, deciduous species, with leaves typically emerging during low salinity periods of the year, may suffer less from water stress than evergreen species. We...
Authors
Lu Zhai, Ken W. Krauss, Xin Liu, Jamie A. Duberstein, William H. Conner, Donald L. DeAngelis, Leonel d.S.L Sternberg

Salinity tolerance among three freshwater mussels (Bivalvia: Unionidae) from Gulf Coastal Plain drainages Salinity tolerance among three freshwater mussels (Bivalvia: Unionidae) from Gulf Coastal Plain drainages

An important physiological constraint influencing distributions of coastal freshwater organisms is their tolerance for saline conditions. We experimentally evaluated salinity tolerance for three freshwater mussel species (Utterbackia imbecillis, Elliptio jayensis, and Glebula rotundata). Mussels were transferred abruptly from well water to one of five treatments (0 [control], 6, 12, 18...
Authors
Nathan A. Johnson, Pamela J. Schofield, James D. Williams, James D. Austin

Next‐generation conservation genetics and biodiversity monitoring Next‐generation conservation genetics and biodiversity monitoring

This special issue of Evolutionary Applications consists of 10 publications investigating the use of next‐generation tools and techniques in population genetic analyses and biodiversity assessment. The special issue stems from a 2016 Next Generation Genetic Monitoring Workshop, hosted by the National Institute for Mathematical and Biological Synthesis (NIMBioS) in Tennessee, USA. The...
Authors
Margaret E. Hunter, Sean M. Hoban, Michael W. Bruford, Gernot Segelbacher, Louis Bernatchez

Nymphoides humboldtiana (Menyanthaceae) in Florida (U.S.A.) verified by DNA data Nymphoides humboldtiana (Menyanthaceae) in Florida (U.S.A.) verified by DNA data

Certain Nymphoides populations in Florida, U.S.A., previously identified as the non-native N. indica (L.) Kuntze, are actually N. humboldtiana (Kunth) Kuntze, as verified using nuclear and plastid DNA data. These new records of N. humboldtiana in Florida are the only known localities in the U.S.A. outside of Uvalde County, Texas. Nymphoides humboldtiana is native to Texas, México, the...
Authors
Beth A. Middleton, Evelyn R. Anemaet, Tracy Elsey Quirk, Nicholas P. Tippery

Dynamic modeling of barrier island response to hurricane storm surge under future sea level rise Dynamic modeling of barrier island response to hurricane storm surge under future sea level rise

Sea level rise (SLR) has the potential to exacerbate the impacts of extreme storm events on the coastal landscape. This study examines the coupled interactions of SLR on storm-driven hydrodynamics and barrier island morphology. A numerical model is used to simulate the hydrodynamic and morphodynamic impacts of two Gulf of Mexico hurricanes under present-day and future sea levels. SLR...
Authors
Davina Passeri, Matthew V. Bilskie, Nathaniel G. Plant, Joseph W. Long, Scott C. Hagen

Flow hydraulics and mixing characteristics in and downstream from Brandon Road Lock, Joliet, Illinois Flow hydraulics and mixing characteristics in and downstream from Brandon Road Lock, Joliet, Illinois

The Brandon Road Lock and Dam on the Des Plaines River near Joliet, Illinois, has been identified for potential implementation of aquatic nuisance species (ANS) control measures. To provide additional information concerning the flow hydraulics and mixing characteristics of the lock and downstream approach channel, the U.S. Geological Survey performed a detailed study of the site between...
Authors
Frank L. Engel, P. Ryan Jackson, Elizabeth A. Murphy

Everglades Invasive Reptile and Amphibian Monitoring Program Everglades Invasive Reptile and Amphibian Monitoring Program

The Everglades Invasive Reptile and Amphibian Monitoring Program (EIRAMP) provides a scientific framework for integrated EDRR, outreach, and monitoring for invasive wildlife in South Florida. EIRAMP also monitors native reptiles, amphibians and mammals to assess impacts of invasive species. South Florida has more nonnative species of reptiles and amphibians than anywhere else in the...
Authors
Rebecca G. Harvey, Mike Rochford, Jennifer Ketterlin Eckles, Edward Metzger, Jennifer Nestler, Frank J. Mazzotti

Mississippi Delta: Chapter G in Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010 Mississippi Delta: Chapter G in Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010

The Mississippi River Delta, the tip of the longest river in North America, is located in the coastal plains of southeastern Louisiana. The study area included in the Mississippi River Delta vignette of southeastern Louisiana follows the Mississippi River southward from Port Sulphur within the modern Plaquemines-Balize Delta lobe (Figure 1). It extends eastward through Long Bay into...
Authors
Lawrence Handley, Kathryn A. Spear, Mirka Zapletal, Cindy A. Thatcher, William R. Jones, Scott A. Wilson

The multiple-comparison trap and the Raven’s paradox—perils of using null hypothesis testing in environmental assessment The multiple-comparison trap and the Raven’s paradox—perils of using null hypothesis testing in environmental assessment

Detecting and quantifying environmental thresholds is frequently an important step in understanding ecological responses to environmental stressors. We discuss two statistical issues often encountered in threshold detection and quantification when statistical null hypothesis testing is used as a main analytical tool.The hidden multiple-comparison trap (leading to a much higher risk of a...
Authors
Song S. Qian, Thomas F. Cuffney

Ghost forests of Marco Island: Mangrove mortality driven by belowground soil structural shifts during tidal hydrologic alteration Ghost forests of Marco Island: Mangrove mortality driven by belowground soil structural shifts during tidal hydrologic alteration

Land use changes often create in situ stress and eventual mortality in mangroves as unsuitable hydroperiods are created through tidal flow alterations. Here, we document mangrove forest and soil structural changes within transects established in tidally restricted areas on Marco Island (Collier County, Florida, USA), which has broad swaths of dead-standing or unhealthy mangroves (“ghost...
Authors
Ken W. Krauss, Amanda W.J. Demopoulos, Nicole Cormier, Andrew From, Jennifer P. McClain-Counts, Roy R. Lewis

Host feeding ecology and trophic position significantly influence isotopic discrimination between a generalist ectoparasite and its hosts: Implications for parasite-host trophic studies Host feeding ecology and trophic position significantly influence isotopic discrimination between a generalist ectoparasite and its hosts: Implications for parasite-host trophic studies

Despite being one of the most prevalent forms of consumerism in ecological communities, parasitism has largely been excluded from food-web models. Stable isotope analysis of consumers and their diets has been widely used in the study of food webs for decades. However, the amount of information regarding parasite stable isotope ecology is limited, restricting the ability of ecologists to...
Authors
William G. Jenkins, Amanda W.J. Demopoulos, Paul C. Sikkel

Using reverse-time egg transport analysis for predicting Asian Carp spawning grounds in the Illinois River Using reverse-time egg transport analysis for predicting Asian Carp spawning grounds in the Illinois River

Identifying spawning grounds of Asian carp is important for determining the reproductive front of invasive populations. Ichthyoplankton monitoring along the Illinois Waterway (IWW) has provided information on abundances of Asian carp eggs in the IWW's navigation pools. Post-fertilization times derived from egg development stages and water temperatures can be used to estimate spawning...
Authors
Zhenduo Zhu, David Soong, Tatiana Garcia, Mina Shahed Behrouz, Steven E. Butler, Elizabeth A. Murphy, Matthew J. Diana, James J. Duncker, David H. Wahl
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