Publications
Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS. Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.
Mission Area Publications
Mission Area Publications
We are focused on some of the most significant issues society faces, and our science is making a substantial contribution to the well-being of the Nation and the world. Learn more about the major topics our research covers and the programs focused on those topics.
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Growth rate variation in Brown Treesnakes (Boiga irregularis): An invasive species of conservation concern Growth rate variation in Brown Treesnakes (Boiga irregularis): An invasive species of conservation concern
Somatic growth rate is a fundamental trait that influences metabolism, lifespan and reproductive maturity and is critical for understanding population dynamics and informing management actions. Brown Treesnakes (Boiga irregularis) introduced to Guam are highly invasive and can reproduce year-round without discrete cohorts. We compared snake size trajectories described by the...
Authors
Bjorn Lardner, Brian S. Cade, Julie A. Savidge, Gordon H. Rodda, Robert Reed, Amy A. Yackel Adams
Constraining snow water equivalent of wet snowpacks in southeast Alaska Constraining snow water equivalent of wet snowpacks in southeast Alaska
Quantifying snow water equivalent (SWE) with ground-penetrating radar (GPR) in a warming climate is complicated by the incidence and variability of liquid water in snow. Snow surveys conducted during the melt season serve as a valuable analog to conditions under future warming. Here, we determine the variability of wet snowpack properties (relative permittivity and density) to quantify...
Authors
Mikaila Mannello, Scott Braddock, Seth Campbell, Emma Erwin, Kristin Schild, Christopher McNeil
High-intensity fire supports restoration of grassland species richness and community composition following woody encroachment High-intensity fire supports restoration of grassland species richness and community composition following woody encroachment
Woody encroachment has driven drastic declines in grassland biodiversity and productivity. In the U.S. Great Plains, high-intensity prescribed fire is increasingly being used to shift encroaching redcedar woodlands to a grassland state. High-intensity fire treatments drive redcedar mortality and increase herbaceous biomass. However, it is unclear how grassland community composition...
Authors
Victoria M. Donovan, Alison K. Ludwig, Dillon T. Fogarty, Caleb Powell Roberts, Dirac Twidwell
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
Nocardia cyriacigeorgica in a Mallard (Anas platyrhynchos) from Arizona, USA Nocardia cyriacigeorgica in a Mallard (Anas platyrhynchos) from Arizona, USA
Nocardia spp. are opportunistic pathogens of humans, domestic animals, and wildlife that can cause high levels of morbidity and mortality. Here, we present a unique case of nocardial airsacculitis in a free-ranging mallard (Anas platyrhynchos) from Arizona, USA, and compare it to the hosts, geographic distribution, diagnostic methodology, and infection site of known nocardiosis cases in...
Authors
Susan Knowles, Brenda M. Berlowski-Zier, Anne Justice-Allen, Barbara L. Bodenstein, Jeffrey M. Lorch
DNA metabarcoding and video camera collars yield different inferences about the summer diet of an arctic ungulate DNA metabarcoding and video camera collars yield different inferences about the summer diet of an arctic ungulate
The diets of wild ungulates are a foundational component of their ecology, influencing their behavior, body condition, and demography. With changing environmental conditions, there is a significant need to identify important forage items for ungulates, but this has often proved challenging. Declines in several barren-ground caribou herds across the North American Arctic have raised...
Authors
Heather E. Johnson, Gabrielle Lys Coulombe, Layne G. Adams, Colleen Arnison, Perry Barboza, Martin Kienzler, William Leacock, Michael J. Suitor
Observability of eastern massasauga (Sistrurus catenatus) during visual encounter surveys in Michigan, USA Observability of eastern massasauga (Sistrurus catenatus) during visual encounter surveys in Michigan, USA
Visual encounter surveys are commonly used to document site occupancy for the eastern massasauga (Sistrurus catenatus; EMR). Efficacy of surveys depends on visual and auditory cues, with basking behavior and burrow use strongly affecting detection. Our goal was to predict body exposure and probability of burrow use from telemetered EMR to better inform implementation of visual encounter...
Authors
Jillian Rajewski, Steven Michael Gray, Jeffrey Grabarkiewicz, Henry Campa III, Gary J. Roloff
Differential responses of coolwater fishes to a whole-lake reduction of a warmwater thermal guild Differential responses of coolwater fishes to a whole-lake reduction of a warmwater thermal guild
Climate change is transforming the ecology of lakes at a rapid pace, shifting some lakes toward warmwater-dominant habitats. As a result, warmwater fishes are increasingly becoming more prevalent in lakes where they already existed, altering the patterning and strength of species interactions. Understanding shifting species interactions (e.g., competition, predation), and the role of...
Authors
Holly Susan Embke, Stephen R. Carpenter, Beard, Giancarlo Coppola, Daniel A. Isermann, Eric J. Pedersen, Andrew L. Rypel, Christopher J. Sullivan, Tyler D. Tunney, M. Jake Vander Zanden
Factors affecting short-term post-release survival probability of Lake Trout implanted with acoustic telemetry transmitters Factors affecting short-term post-release survival probability of Lake Trout implanted with acoustic telemetry transmitters
The use of acoustic telemetry is steadily expanding to help answer questions related to habitat use, movement, and behavior of fishes. Significant time and resources are invested to start acoustic telemetry studies; therefore, careful planning is needed to limit post-release mortality of tagged individuals. Deep, cold-water species present additional challenges to acoustic tagging...
Authors
Alexander James Gatch, Dimitry Gorsky, Kyle Morton, Josephine Johnson, Collin Farrell, Timothy B. Johnson, Emma Bloomfield, Brent Metcalfe, Jessica Goretzke, Michael Connerton, Sarah M. Larocque, Jonathan Midwood, Brian O’Malley, Brian Weidel, Steven J. Cooke, Stacy Furgal
A novel approach to increase accuracy in remotely sensed evapotranspiration through basin water balance and flux tower constraints A novel approach to increase accuracy in remotely sensed evapotranspiration through basin water balance and flux tower constraints
Remote sensing-derived evapotranspiration (RSET) products capture the spatiotemporal variations of evapotranspiration (ET) from field to basin scales with unprecedented details. However, their accuracy varies across RSET estimation methods and diverse hydroclimate regions. While ET modeling efforts to account for biophysical processes and controlling parameters have made good progress in...
Authors
Kul Bikram Khand, Gabriel B. Senay, MacKenzie Friedrichs, Koong Yi, Joshua Fisher, Lixin Wang, Kosana Suvočarev, Arman Ahmadi, Housen Chu, Stephen P. Good, Kanishka Mallick, Justine E.C. Missik, Jacob A. Nelson, David E. Reed, Tianxin Wang, Xiangming Xiao
Coelomic foreign bodies in wild-caught Python spp. in the Greater Everglades Ecosystem, Florida, USA Coelomic foreign bodies in wild-caught Python spp. in the Greater Everglades Ecosystem, Florida, USA
Burmese pythons (Python molurus bivittatus) and African rock pythons (Python sebae) have established invasive populations in southern Florida, severely disrupting local ecosystems. We analysed necropsy data from 2,179 pythons captured between 2006 and 2022, revealing nine cases of coelomic foreign bodies, primarily consisting of bird beaks, which presumably entered the coelom following
Authors
Gretchen E. Anderson, McKayla M. Spencer, Ray W. Snow, Andrea Currylow, Frank N. Ridgley, Bryan G. Falk, Amy A. Yackel Adams
Chapter three - Global SSEBop actual evapotranspiration modeling and mapping using the VIIRS data Chapter three - Global SSEBop actual evapotranspiration modeling and mapping using the VIIRS data
AActual evapotranspiration (ETa) is an essential climate variable that can be used for drought monitoring and water availability assessment because of its close connection with vegetation, soil moisture, and the water cycle. An operational ETa using the Visible Infrared Imaging Radiometer Suite (VIIRS) and global weather datasets was developed through the Simplified Surface Energy...
Authors
Gabriel B. Senay, Stefanie Kagone, Kul Bikram Khand, Gabriel Edwin Lee Parrish, Claudia Young, Michael Budde