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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 65,000 articles authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Development of a large-volume concentration method to recover infectious avian influenza virus from the aquatic environment Development of a large-volume concentration method to recover infectious avian influenza virus from the aquatic environment
Since late 2021, outbreaks of highly pathogenic avian influenza virus have caused a record number of mortalities in wild birds, domestic poultry, and mammals in North America. Wetlands are plausible environmental reservoirs of avian influenza virus; however, the transmission and persistence of the virus in the aquatic environment are poorly understood. To explore environmental...
Authors
Laura E. Hubbard, Erin A. Stelzer, Rebecca L. Poulson, Dana W. Kolpin, Christine M. Szablewski, Carrie E. Givens
Using camera traps to estimate site occupancy of invasive Argentine Black and White Tegus (Salvator merianae) in South Florida Using camera traps to estimate site occupancy of invasive Argentine Black and White Tegus (Salvator merianae) in South Florida
The introduction of nonnative species is a leading cause of biodiversity loss. Many invasive species are cryptic or elusive in nature and therefore often evade detection, complicating their management. Occupancy modeling can reveal the presence and spread of invasive species over time and therefore has important management implications. Camera traps can be used to estimate occupancy, or...
Authors
Samantha N. Smith, Melissa A. Miller, Hardin Waddle, Sarah Cooke, Amy A. Yackel Adams, Andrea Currylow, Kevin Donmoyer, Frank J. Mazzotti
Using life history traits to assess climate change vulnerability in understudied species Using life history traits to assess climate change vulnerability in understudied species
Climate change is a primary threat to biodiversity, but for many species, we still lack information required to assess their relative vulnerability to changes. Climate change vulnerability assessment (CCVA) is a widely used technique to rank relative vulnerability to climate change based on species characteristics, such as their distributions, habitat associations, environmental...
Authors
Ross K Hinderer, Blake R. Hossack, Lisa A Eby
Changes in streamflow seasonality associated with hydroclimatic variability in the north-central United States among three discrete temporal periods, 1946–2020 Changes in streamflow seasonality associated with hydroclimatic variability in the north-central United States among three discrete temporal periods, 1946–2020
Authors
Nancy A. Barth, Harper N. Wavra, Anthony R Koebele, Steven K. Sando
Characterizing directivity in small (M 2.4-5) aftershocks of the Ridgecrest sequence Characterizing directivity in small (M 2.4-5) aftershocks of the Ridgecrest sequence
Directivity, or the focusing of energy along the direction of an earthquake rupture, is a common property of earthquakes of all sizes and can cause increased hazard due to azimuthally dependent ground‐motion amplification. For small earthquakes, the effects of directivity are generally less pronounced due to reduced rupture size, yet the directivity in small events can bias source...
Authors
Shanna Chu, Annemarie S. Baltay, Rachel E. Abercrombie
Drought before fire increases tree mortality after fire Drought before fire increases tree mortality after fire
Fire and drought are expected to increase in frequency and severity in temperate forests due to climate change. To evaluate whether drought increases the likelihood of post-fire tree mortality, we used a large database of tree survival and mortality from 32 years of wildland fires covering four dominant western North American conifers. We used Bayesian hierarchical modeling to predict...
Authors
C. Alina Cansler, Micah C. Wright, Phillip J. van Mantgem, Timothy M. Shearman, J. Morgan Varner, Sharon M. Hood
Global patterns of coseismic landslide runout mobility differ from aseismic landslide trends Global patterns of coseismic landslide runout mobility differ from aseismic landslide trends
Coseismic landslides significantly contribute to human and economic losses during and immediately following earthquakes, yet very little data on the runout of such landslides exist. While well-established behavior of aseismic (e.g., hydrologically triggered) landslide runout mobility suggests strong correlation between landslide size and mobility, limited studies of coseismic landslide...
Authors
Alex R. Grant, Natalie K. Culhane
Pragmatically mapping Phragmites with unoccupied aerial systems: A comparison of invasive species land cover classification using RGB and multispectral imagery Pragmatically mapping Phragmites with unoccupied aerial systems: A comparison of invasive species land cover classification using RGB and multispectral imagery
Unoccupied aerial systems (UASs) are increasingly being deployed in coastal environments to rapidly map and monitor changes to geomorphology, vegetation, and infrastructure, particularly in difficult to access areas. UAS data, relative to airplane or satellite data, typically have higher spatial resolution, sensor customization, and increased flexibility in temporal resolution, which...
Authors
Alexandra Danielle Evans, Jennifer Marie Cramer, Victoria Mary Scholl, Erika E. Lentz
Invisible hand of sampling for management: Underlying needs to survey a threatened seabird can bias aggregated data Invisible hand of sampling for management: Underlying needs to survey a threatened seabird can bias aggregated data
Aim
Authors
Ryan Baumbusch, Adam Duarte, James T. Peterson
Mixed responses of tenebrionid beetles to solar energy development in the Mojave Desert Mixed responses of tenebrionid beetles to solar energy development in the Mojave Desert
Solar energy development causes land-use change and habitat alteration that may affect desert ecosystems. Tenebrionid beetles have evolved to exploit desert environments and heavily contribute to ecosystem functionality in aridlands, yet their species-specific, ecological responses to solar energy development are unknown. Our objective was to elucidate effects of solar energy development...
Authors
Steven Mark Grodsky, Joshua W. Campbell, Karl A. Roeder, Evan Waite, Ethan R. Wright, M. Andrew Johnston
New York State climate impacts assessment chapter 05: Ecosystems New York State climate impacts assessment chapter 05: Ecosystems
The people of New York have long benefited from the state's diversity of ecosystems, which range from coastal shorelines and wetlands to extensive forests and mountaintop alpine habitat, and from lakes and rivers to greenspaces in heavily populated urban areas. These ecosystems provide key services such as food, water, forest products, flood prevention, carbon storage, climate moderation
Authors
Sheila Hess, Douglas A. Burns, Garrett Boudinot, Carrie Brown-Lima, Jason Corwin, John Foppert, George Robinson, Kevin C. Rose, Matthew D. Schlesinger, Rebecca Shuford, Amanda Stevens
Trophic transfer of fipronil residues to black-footed ferrets: Implications for ferret safety, flea control, and plague mitigation Trophic transfer of fipronil residues to black-footed ferrets: Implications for ferret safety, flea control, and plague mitigation
Sylvatic plague, caused by the flea-borne bacterium Yersinia pestis, is an invasive disease in North America that causes reductions of native fauna and transforms ecosystems. Fipronil baits have shown promise in reducing flea loads on prairie dogs Cynomys spp. for plague mitigation. Many species depend on prairie dogs and their ecological influences, including the black-footed ferret...
Authors
Tyler N. Tretten, David A. Eads, John P. Hughes, Gregory P. Dooley, Dean E. Biggins