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Publications

Publications from USGS science centers throughout the Southeast Region.

Filter Total Items: 9903

Nerodia clarkii (Saltmarsh Watersnake). Predation

Predators of Nerodia clarkii are suspected to include larger species of crabs, fish, wading birds, snakes, alligators, and crocodiles. To our knowledge, there have only been two published observations of predation on N. clarkii, including a predation attempt from a Callinectes sapidus (Blue Crab) in Mississippi, USA and a successful predation by a Grus americana (Whooping Crane) in Texas, USA. Her
Authors
Bryna L. Daykin, Sidney T. Godfrey, Michael Cherkiss, Gareth Blakemore, Frank J. Mazzotti

Sea turtle density surface models along the United States Atlantic coast

Spatially explicit estimates of marine species distribution and abundance are required to quantify potential impacts from human activities such as military training and testing, fisheries interactions, and offshore energy development. There are 4 protected species of sea turtle (loggerhead, green, Kemp’s ridley, and leatherback) commonly found along the east coast of the USA, our study area, and w
Authors
Andrew DiMatteo, Jason J. Roberts, D. Todd Jones-Farrand, Lance Garrison, Kristen Hart, Robert D. Kenney, William A. McLellan, Kate Lomac-MacNair, Debra Palka, Meghan E. Rickard, Kelsey E. Roberts, Ann M. Zoidis, L. Sparks

Flow cytometric assessments of metabolic activity in bacterial assemblages provide insight into ecosystem condition along the Buffalo National River, Arkansas

The Buffalo National River (BNR), on karst terrain in Arkansas, is considered an extraordinary water resource. Water collected in Spring 2017 along BNR was metagenomically analyzed using 16S rDNA, and for 17 months (5/2017–11/2018), bacterial responses were measured in relation to nutrients sampled along a stretch of BNR near a concentrated animal feed operation (CAFO) on Big Creek. Because cell c
Authors
Jill Jenkins, Rassa Dale, Nina M. Hoffpauir, Brooke A Baudoin, Caroline Matkin, Lucas Driver, Shawn W Hodges, Bonnie L. Brown

20th century warming in the lower Florida Keys was dominated by increasing winter temperatures

Long-lived Atlantic coral species like Orbicella faveolata are important archives of oceanographic change in shallow, marine environments like the Florida Keys. Not only can coral-based records extend for multiple centuries beyond the limits of the instrumental record, but they can also provide a more accurate representation of in situ conditions than gridded interpolated sea-surface temperature (
Authors
Jennifer A. Flannery, Julie N. Richey, Lauren Toth, Madelyn Jean Mette

Stable isotopes reveal that foraging strategy dictates trophic response of salt marsh residents to black mangrove Avicennia germinans range expansion

Climate warming has facilitated the expansion of black mangrove Avicennia germinans (hereafter ‘Avicennia’) into smooth cordgrass Spartina alterniflora (hereafter ‘Spartina’) salt marshes in southeastern Louisiana (USA). As macrophytes contribute to soil organic matter (SOM) and primary production, this transition could alter the basal energy pathways supporting salt marsh food webs. We used bulk-
Authors
Katherine B. Loesser, Christina E. Powell, Brandeus Davis, Melissa Millman Baustian, Michael J. Polito

Microplastic-mediated new mechanism of liver damage: From the perspective of the gut-liver axis

Microplastics (MPs) are environmental contaminants that are present in all environments and can enter the human body, accumulate in various organs, and cause harm through the ingestion of food, inhalation, and dermal contact. The connection between bowel and liver disease and the interplay between gut, liver, and flora has been conceptualized as the “gut-liver axis”. Microplastics can alter the st
Authors
Xiaomei Wang, Kaili Deng, Pei Zhen Zhang, Qiqing Chen, Jason Tyler Magnuson, Wenhui Qiu, Yuping Zhou

Monitoring of wave, current, and sediment dynamics along the Fog Point Living Shoreline, Glenn Martin National Wildlife Refuge, Maryland

Living shorelines with salt marsh species, rock breakwaters, and sand nourishment were built along the coastal areas in the Glenn Martin National Wildlife Refuge, Maryland, in 2016 in response to Hurricane Sandy (2012). The Fog Point living shoreline at Glenn Martin National Wildlife Refuge was designed with the “headland - breakwater - embayment” pattern. Scientists from the U.S. Geological Surve
Authors
H. Wang, Q. Chen, W.D. Capurso, N. Wang, L.M. Niemoczynski, M. Whitbeck, L. Zhu, G.A. Snedden, C.A. Wilson, M.S. Brownley

A brief note on substantial sub-daily arsenic variability in pumping drinking-water wells in New Hampshire

Large variations in redox-related water parameters, like pH and dissolved oxygen (DO), have been documented in New Hampshire (United States) drinking-water wells over the course of a few hours under pumping conditions. These findings suggest that comparable sub-daily variability in dissolved concentrations of redox-reactive and toxic arsenic (As) also may occur, representing a potentially critical
Authors
Paul M. Bradley, Emily C. Hicks, Joseph P. Levitt, David C. Lloyd, Mhairi M. McDonald, Kristin M. Romanok, Kelly Smalling, Joseph D. Ayotte

Ecology of an insular snake assemblage in coastal Maine

Wildlife populations at the peripheries of their distributions or on isolated islands often display divergent and poorly understood morphological or life-history characteristics compared to core populations. We used a capture–mark–recapture dataset collected over a 19-year period to characterize a northern, insular snake assemblage in coastal Maine. We captured 611 individual snakes of 4 species (
Authors
John D. Willson, Ethan J. Royal, Jacquelyn C. Guzy, Meredith C. Swartwout, Chelsea S. Kross

Guide to per- and polyfluoroalkyl substances (PFAS) sampling within Natural Resource Damage Assessment and Restoration

Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals with a nondegradable fluorinated carbon backbone that have been incorporated in countless industrial and commercial applications. Because PFAS are nondegradable, they have been detected in all environmental media, indicating extensive global contamination. The unique physiochemical properties of PFAS and their complex interactions
Authors
Erin L. Pulster, Sarah R. Bowman, Landon Keele, Jeffery Steevens

Transglobal spread of an ecologically relevant sea urchin parasite

Mass mortality of the dominant coral reef herbivore Diadema antillarum in the Caribbean in the early 1980s contributed to a persistent phase shift from coral- to algal-dominated reefs. In 2022, a scuticociliate most closely related to Philaster apodigitiformis caused further mass mortality of D. antillarum across the Caribbean, leading to >95% mortality at affected sites. Mortality was also report
Authors
Isabella T. Ritchie, Brayan Vilanova-Cuevas, Ashley Altera, Kaileigh Cornfield, Ceri Evans, James S. Evans, Maria Hopson-Fernandes, Christina A. Kellogg, Elayne Looker, Oliver Taylor, Ian Hewson, Mya Breitbart

Precision of four calcified structures for age estimation of Black Carp

ObjectiveBlack Carp Mylopharyngodon piceus is an emerging invasive species in North America with an expanding population in the Mississippi River basin. Current aging methods use a suite of structures for age estimation, and a single structure is needed to minimize processing time, to maximize consistency of age and growth measurements, and to allow for back-calculation of individual fish length a
Authors
Patrick Kroboth, Anne Marie Herndon, Cortney Cox, Jesse Robert Fischer