Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10380
Occurrence and tissue distribution of per- and polyfluoroalkyl substances (PFAS) in fishes from waterbodies with point and non-point sources in Massachusetts, USA Occurrence and tissue distribution of per- and polyfluoroalkyl substances (PFAS) in fishes from waterbodies with point and non-point sources in Massachusetts, USA
Per- and polyfluoroalkyl substances (PFAS) are persistent environmental contaminants with known bioaccumulative and toxic effects in aquatic ecosystems. This study assessed site-specific differences in PFAS contamination in fish from Ashumet Pond, Sudbury River, and Great Herring Pond (reference site) in Massachusetts. Fish from Ashumet Pond exhibited the highest PFAS concentrations...
Authors
Heather L. Walsh, Vicki S. Blazer, Emma Lord, Stephen T. Hurley, Denis R. LeBlanc
Perfluorodecanesulfonate (PFDS) induces innate immune toxicity through the NF-κB pathway in early life stage zebrafish Perfluorodecanesulfonate (PFDS) induces innate immune toxicity through the NF-κB pathway in early life stage zebrafish
Perfluorodecanesulfonate (PFDS), a long-chain polyfluoroalkyl substance (PFAS), is widely detected in aquatic environments and increasingly recognized for its environmental persistence and bioaccumulative potential; however, its immunotoxicity remains poorly understood in aquatic biota. In this study, early life stage zebrafish (Danio rerio) were exposed to environmentally relevant...
Authors
Chengwei Zhou, Wei Cheng, Rongrong Xuan, Xinyuan Kang, Jiazhen Wang, Jason Tyler Magnuson, Jialin Li, Di Fang, Wenhui Qiu
Multi-sensor proximal remote sensing for cover crop biomass estimation at high and moderate spatial resolutions Multi-sensor proximal remote sensing for cover crop biomass estimation at high and moderate spatial resolutions
Cover crops play a critical role in providing agroecological services such as improving soil health, reducing erosion and nitrogen loss, and suppressing weeds, which are closely tied to their performance such as accumulated biomass. This study evaluated the Active Canopy Sensor (ACS) -214, an active proximal sensing device equipped with its own light-emitting red and near-infrared...
Authors
Jyoti Jennewein, Brian W. Davis, S. Seehaver-Eagan, J. Nicolette, J. Pittman, W. Dean Hively, Avi Goldsmith, C. Hidalgo, C. Reberg-Horton, S.B. Mirsky
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