Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10351
Tracking persistent declines in suspended sediment in the Lower Mississippi and Atchafalaya Rivers, 1992–2021: Harnessing WRTDSplus to characterize longitudinally varying trends and explore connections to streamflow Tracking persistent declines in suspended sediment in the Lower Mississippi and Atchafalaya Rivers, 1992–2021: Harnessing WRTDSplus to characterize longitudinally varying trends and explore connections to streamflow
Suspended sediment (SS) continues a century-long decline in the Lower Mississippi and Atchafalaya Rivers, United States. In this study, we use the WRTDSplus model to estimate concentrations and loads for total, fine (
Authors
Jennifer C. Murphy, Lindsey Ayn Schafer, Scott Mize
Sensitivity of mayfly Neocloeon triangulifer to a reference toxicant is significantly impacted by the age of the diatom feed species Navicula pelliculosa Sensitivity of mayfly Neocloeon triangulifer to a reference toxicant is significantly impacted by the age of the diatom feed species Navicula pelliculosa
The development of standardized toxicity tests is critical for assessing pollutants in aquatic ecosystems. The mayfly Neocloeon triangulifer offers advantages as a test species due to its asexual reproduction, short life cycle, and high sensitivity to pollutants. However, we identified variability in response sensitivity to pollutants, which may stem from the nutritional composition and...
Authors
Moira M. Ijzerman, Melanie J. Gallant, David J. Soucek, Rebecca A. Consbrock, Heather Roshon, Jacob Gawronski, Paul K. Sibley, Ryan S. Prosser
Invasive species in the aquarium trade: Survey of attitudes, behaviors, and knowledge among US participants Invasive species in the aquarium trade: Survey of attitudes, behaviors, and knowledge among US participants
Although the aquarium trade is an important pathway for direct and indirect non-native species introductions into freshwater systems, knowledge and attitudes of participants in the trade regarding alien species issues is largely undocumented. Therefore, we administered a survey to investigate attitudes and behaviors of aquarists and non-aquarists regarding the aquarium trade as a pathway...
Authors
Joseph V. Brown, William E. Kelso, Diaz Rodrigo, Wesley Daniel, Haley M. Brassard, Michael D. Kaller
Incidence of pollution, bioaccumulation, biomagnification, and toxic effects of per- and polyfluoroalkyl substances (PFAS) in aquatic ecosystems: A review Incidence of pollution, bioaccumulation, biomagnification, and toxic effects of per- and polyfluoroalkyl substances (PFAS) in aquatic ecosystems: A review
Per- and polyfluoroalkyl substances (PFAS) are persistently accumulated in both environmental media and biological systems, leading to significant toxicological effects. Although research on PFAS has expanded in recent years, systematic reviews on its concentration distribution in aquatic environments and biota, as well as its toxicological effects, remain scarce. Moreover, existing...
Authors
Cunlong Wang, Jason Tyler Magnuson, Chunmiao Zheng, Wenhui Qiu
Automated generation of an urban synthetic elevation checkpoint network across the North Carolina coastline, USA Automated generation of an urban synthetic elevation checkpoint network across the North Carolina coastline, USA
Lidar and structure from motion-derived digital elevation and surface models have widespread application. Consideration of a topographic model's vertical root mean squared error (RMSEz) and systematic directional bias is important for many of these applications, particularly landscape change detection and measurement. Due to logistic, resource, and time constraints, wide area remotely...
Authors
Alexander C. Seymour, Christine J. Kranenburg, Kara S. Doran
Future of coral bleaching research Future of coral bleaching research
Coral bleaching is the largest global threat to coral reef ecosystem persistence this century. Advancing our understanding of coral bleaching and developing solutions to protect corals and the reefs they support are critical. In the present article, we, the US National Science Foundation–funded Coral Bleaching Research Coordination Network, outline future directions for coral bleaching...
Authors
Andrea G. Grottoli, Ann M. Hulver, R. Vega Thurber, R. J. Toonen, E. R. Schmeltzer, Ilsa B. Kuffner, K. L. Barott, Iliana B. Baums, K. Castillo, Leila Chapron, M. A. Coffroth, D. J. Combosch, A. M.S. Correa, Eric D. Crandall, Megan Donahue, Jose M. Eirin-Lopez, Thomas Felis, C. Ferrier-Pages, Hugo B Harrison, Scott F. Heron, Danwei Huang, Adriana Humanes, Carly D. Kenkel, Thomas Krueger, Joshua Madin, Mikhail V Matz, Lisa C. McManus, Monica Medina, Erinn M. Muller, J. Padilla-Gamino, Hollie M. Putnam, Y Sawall, Tom Shlesinger, Michael J. Sweet, Christian Voolstra, V. M. Weis, Christian Wild, H. C. Wu
Hydraulic conductivity and transmissivity estimates from slug tests in wells within the Mississippi Alluvial Plain, Arkansas and Mississippi, 2020 Hydraulic conductivity and transmissivity estimates from slug tests in wells within the Mississippi Alluvial Plain, Arkansas and Mississippi, 2020
During the spring and summer of 2020, the U.S. Geological Survey conducted single-well slug tests on selected observation wells within the Mississippi Alluvial Plain in Arkansas and Mississippi to estimate hydraulic conductivity and transmissivity values for the Mississippi River Valley alluvial and middle Claiborne aquifers. Well and aquifer data were collected from field measurements...
Authors
Aaron L. Pugh
Pyrethroid insecticides implicated in mass mortality of monarch butterflies at an overwintering site in California Pyrethroid insecticides implicated in mass mortality of monarch butterflies at an overwintering site in California
Since the 1980s, monarch butterfly (Danaus plexippus plexippus) populations across North America have declined by 80–95%. Although several studies have implicated pesticides as a contributing factor to their population declines, our understanding of monarch exposure levels in nature remains limited. In January 2024, a mass mortality event near an overwintering site in Pacific Grove...
Authors
Staci Cibotti, Michelle L. Hladik, Emily May, Emma Pelton, Timothy Bargar, Natalie Johnston, Aimee Code
Isotopic niche plasticity of American alligators within the southern Everglades Isotopic niche plasticity of American alligators within the southern Everglades
Hydrologic alterations within the Everglades have degraded American alligator (Alligator mississippiensis) habitat, reduced prey base, and increased physiological stress. Alligator body condition declined across many management areas from 2000 through 2014, prompting us to investigate the relationship between their intraspecific isotopic niche dynamics and body condition. Alligators...
Authors
Mathew Denton, Michael Cherkiss, Frank J. Mazzotti, Laura A. Brandt, Sidney T. Godfrey, Darren Johnson, Kristen Hart
Assessment and validation of depressions in digital elevation models from multiple elevation data sources and delineation of depressions, sinking streams, and their watersheds in Tennessee and parts of Kentucky, Virginia, North Carolina, Georgia, Alabama, Assessment and validation of depressions in digital elevation models from multiple elevation data sources and delineation of depressions, sinking streams, and their watersheds in Tennessee and parts of Kentucky, Virginia, North Carolina, Georgia, Alabama,
Closed depressions and sinking streams in karst landscapes pose difficulties for water-resources management, in the construction of roads and other public works, and in hydrologic and hydrogeomorphic analyses. Digital elevation models (DEMs) can be used to identify the location and determine the size and shape of closed depressions, but separating artificial depressions due to error from...
Authors
David E. Ladd, John K. Carmichael
Staying alive: Post-translocation apparent survival of fishes in headwater springs following drought Staying alive: Post-translocation apparent survival of fishes in headwater springs following drought
Objective Increasing fragmentation from constructed barriers, increased water use, and climate change limits the resiliency of stream fish metapopulations by reducing colonization. Management actions such as stocking or translocating fish may help contribute to the resilience of isolated habitats and increase redundancy of populations in intermittent stream networks. Our objective was to...
Authors
Sophia Marie Bonjour, Keith B. Gido, Peter J. Pfaff, Abigail Rick, Aiden Masek
High-throughput screening identifies bisphenol P as a potent cardiotoxin, inducing cardiotoxicity through apoptosis and NF-κB Pathway High-throughput screening identifies bisphenol P as a potent cardiotoxin, inducing cardiotoxicity through apoptosis and NF-κB Pathway
The increasing use of plastic additives, particularly bisphenols (BPs), has raised significant concerns about their potential risks to human health, especially during critical developmental stages. In this study, we developed a novel high-throughput toxicity screening platform using zebrafish (Danio rerio) to identify and prioritize chemicals with cardiotoxic potential, which is based on
Authors
Jiazhen Wang, Jason Tyler Magnuson, Yanqiu Feng, Wenjing Zhao, Chuanzi Gao, Chunmiao Zheng, Wenhui Qiu