Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10361
Differing field methods and site conditions lead to varying bias in suspended sediment concentrations in the Lower Mississippi and Atchafalaya Rivers Differing field methods and site conditions lead to varying bias in suspended sediment concentrations in the Lower Mississippi and Atchafalaya Rivers
At sites that have been sampled for decades, changes in field and laboratory methods happen over time as instrumentation and protocols improve. Here, we compare the influence of depth- and point-integrated sampling on total, fine (
Authors
Jennifer C. Murphy, Lindsey Ayn Schafer, Scott Mize
Mangrove habitat persistence and carbon vulnerability associated with increased nutrient loading and sea-level rise at Ding Darling National Wildlife Refuge (Sanibel Island, Florida, USA) Mangrove habitat persistence and carbon vulnerability associated with increased nutrient loading and sea-level rise at Ding Darling National Wildlife Refuge (Sanibel Island, Florida, USA)
J.N. “Ding” Darling National Wildlife Refuge (DDNWR) is located on Sanibel Island along the southwestern coast of Florida, USA. Sanibel Island is heavily developed, but DDNWR provides protection for a large mangrove area that supports biodiversity and recreational opportunity. However, nitrogen (N) and phosphorus (P) eutrophication attributed to agriculture discharge along the...
Authors
Ken Krauss, Jeremy R. Conrad, Jamie A. Duberstein, Eric Ward, Judith Z. Drexler, Kevin Buffington, Karen M. Thorne, Brian W. Benscoter, Haley Miller, Natalie T. Faron, Sergio Merino, Andrew From, Elitsa I. Peneva-Reed, Zhiliang Zhu
Cruise Report for NOAA Ship Nancy Foster Cruise NF-22-06 Cruise Report for NOAA Ship Nancy Foster Cruise NF-22-06
Between 9 August and 1 September, 2022, the Mesophotic and Deep Benthic (MDBC) Habitat Assessment and Evaluation (HAE) and Mapping, Ground-truthing, and Predictive Habitat Modeling (MGM) projects implemented remotely operated vehicle (ROV) dives, multibeam surveys, and conductivity, temperature, depth (CTD) operations at deep-sea sites in the northern Gulf of Mexico. The primary sites...
Authors
Randy Clark, Amanda Demopoulos
Characterizing changes in the 1-percent annual exceedance probability streamflows for climate-change scenarios in the Housatonic River watershed of Massachusetts, Connecticut, and New York Characterizing changes in the 1-percent annual exceedance probability streamflows for climate-change scenarios in the Housatonic River watershed of Massachusetts, Connecticut, and New York
Current methods for determining the 1-percent annual exceedance probability (AEP) for a streamflow assume stationarity (the assumption that the statistical distribution of data from past observations does not contain trends and will continue unchanged in the future). This assumption allows the 1-percent AEP to be determined based on historical streamflow records. However, the assumption...
Authors
Scott A. Olson
Potentiometric surfaces (2013, 2015), groundwater quality (2010–15), and water-level changes (2011–13, 2013–15) in the Sparta-Memphis aquifer in Arkansas Potentiometric surfaces (2013, 2015), groundwater quality (2010–15), and water-level changes (2011–13, 2013–15) in the Sparta-Memphis aquifer in Arkansas
The Sparta-Memphis aquifer, present across much of eastern Arkansas, is the second most used groundwater resource in the State, with the Mississippi River Valley alluvial aquifer being the primary groundwater resource. The U.S. Geological Survey, in cooperation with Arkansas Department of Agriculture-Natural Resources Division, Arkansas Geological Survey, Natural Resources Conservation...
Authors
Anna M. Nottmeier, Katherine J. Knierim, Phillip D. Hays
Silver carp herding: A telemetry evaluation of efficacy and implications for design and application Silver carp herding: A telemetry evaluation of efficacy and implications for design and application
Removal of invasive Silver Carp Hypophthalmichthys molitrix is a primary control action in North America. Strong avoidance responses to underwater sound and electricity have been shown to facilitate herding and mass removal of these fish. We conducted a telemetry study on a closed population of Silver Carp (i.e., 10 telemetered fish) to assess fine-scale movement responses to herding...
Authors
Josey Lee Ridgway, Matthew Ross Acre, Tyler Michael Hessler, Dustin Broaddus, Jessica Morris, Robin D. Calfee
Thirteen years of turtle capture–mark–recapture in a small urban pond complex in Louisiana, USA Thirteen years of turtle capture–mark–recapture in a small urban pond complex in Louisiana, USA
Turtles are one of the most imperiled vertebrate groups in the world. With habitat destruction unabated in many places, urban and suburban greenspaces may serve as refugia for turtles, at least those species able to tolerate heavily altered landscapes. In south-central Louisiana, we have conducted a turtle capture–mark–recapture effort in two ponds in an urban greenspace for 13 yr to...
Authors
Brad Glorioso, J. Hardin Waddle, Doug P. Armstrong
Informing ASR treatment practices in a Florida aquifer through a human health risk approach Informing ASR treatment practices in a Florida aquifer through a human health risk approach
Aquifer storage and recovery (ASR) can augment water supplies and hydrologic flows under varying climatic conditions. However, imposing drinking water regulations on ASR practices, including pre-treatment before injection into the aquifer, remains arguable. Microbial inactivation data—Escherichia coli, Pseudomonas aeruginosa, poliovirus type 1 and Cryptosporidium parvum—were used in a...
Authors
Anna Gitter, Kristina Mean, John T. Lisle
Survey optimization for invasive Burmese pythons informed by camera traps Survey optimization for invasive Burmese pythons informed by camera traps
The Burmese python (Python bivittatus) is an invasive predator responsible for broad mammal declines in South Florida, United States. Despite their large size, pythons remain cryptic and require multifaceted approaches for detection. We evaluated a novel technique by deploying camera traps at known locations of radiotagged pythons in the Florida Keys. We estimated daily detection...
Authors
Michael V. Cove, Jeremy Dixon, Katherine King, Matthew Willson, Kristen Hart
Temperature thresholds for leaf damage from two extreme freeze events (2018 and 2021) near the northern range limit of black mangroves (Avicennia germinans) in southeastern North America Temperature thresholds for leaf damage from two extreme freeze events (2018 and 2021) near the northern range limit of black mangroves (Avicennia germinans) in southeastern North America
Extreme winter temperatures govern the northern range limit of black mangroves (Avicennia germinans) in southeastern North America. There is a pressing need for studies that advance our understanding of how extreme cold temperature events affect mangroves near their range limits. However, such events are infrequent and challenging to study at regional scales. Here, we compared the damage...
Authors
Simen Kaalstad, Michael Osland, Donna J. Devlin, C. Edward Proffitt, Laura Feher, Anna R. Armitage, Richard Day, Kathleen M. Swanson, Gordon Anderson, Brigid Berger, Just Cebrian, Karen L. Cummins, Kenneth H. Dunton, Ilka C. Feller, Alejandro Fierro-Cabo, Elena A. Flores, Andrew From, A. Randall Hughes, David A. Kaplan, Amy K. Langston, Melinda Martinez, Briana Martinez, Christopher J. Miller, Nathan G.F. Reaver, Colt R. Sanspree, Caitlin M. Snyder, Andrew P. Stetter, Jamie E. Thompson, Carlos Zamora-Tovar
Responses of juvenile mussels to metals in sediment and water of the Tri-State Mining District Responses of juvenile mussels to metals in sediment and water of the Tri-State Mining District
The U.S. Geological Survey and collaborators from EcoAnalysts, Inc., completed field and laboratory studies during 2016–19 to evaluate the toxicity of metals to freshwater mussels in streams draining the Tri-State Mining District. This project consisted of (1) sampling and analysis of metals in water and sediment, (2) surveys of mussel assemblages at sites with suitable mussel habitat,...
Authors
John M. Besser, Chris D. Ivey, James L. Kunz, Nile E. Kemble, Danielle M. Cleveland, Jeffery A. Steevens, Heidi Dunn, Ryan Foley
Mangrove forests and climate change: Impacts and interactions Mangrove forests and climate change: Impacts and interactions
The position of mangrove forests in the dynamic intertidal zone means that they are expected to be heavily impacted by climate change. Much focus is put on mangroves and their response to sea-level rise, but this ecosystem is exposed to a much broader range of climate change stressors, including increased storminess and waves, more dynamic and unpredictable precipitation patterns, and...
Authors
Daniel A. Friess, Luzhen Chen, Nicole Cormier, Ken Krauss, Catherine E. Lovelock, Jacqueline L. Raw, Kerrylee Rogers, Neil Saintilan, Frida Sidik