Articles
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
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.
Filter Total Items: 78946
Effects of landcover on mesocarnivore density and detection rate along an urban to rural gradient Effects of landcover on mesocarnivore density and detection rate along an urban to rural gradient
Human development has major implications for wildlife populations. Urban-exploiter species can benefit from human subsidized resources, whereas urban-avoider species can vanish from wildlife communities in highly developed areas. Therefore, understanding how the density of different species varies in response to landcover changes associated with human development can provide important...
Authors
Leah McTigue, Brett Alexander DeGregorio
Shifted sediment-transport regimes by climate change and amplified hydrological variability in cryosphere-fed rivers Shifted sediment-transport regimes by climate change and amplified hydrological variability in cryosphere-fed rivers
Climate change affects cryosphere-fed rivers and alters seasonal sediment dynamics, affecting cyclical fluvial material supply and year-round water-food-energy provisions to downstream communities. Here, we demonstrate seasonal sediment-transport regime shifts from the 1960s to 2000s in four cryosphere-fed rivers characterized by glacial, nival, pluvial, and mixed regimes, respectively...
Authors
Tinghu Zhang, Dongfeng Li, Amy E. East, Albert J. Kettner, James L. Best, Jinren Ni, Xixi Lu
Alternative lifestyles: A plague persistence hypothesis Alternative lifestyles: A plague persistence hypothesis
Several explanations have been posited for how the plague bacterium (Yersinia pestis) reemerges during sylvatic cycles within the same foci over many years, and often without direct evidence of host die-offs. One prevalent view is that transmission-optimized Y. pestis bacteria, exhibiting epizootic/enzootic behavior, almost continually replicate and survive through repeated, linked, host...
Authors
Jeffrey Wimsatt, David A. Eads, Marc R. Matchett, Dean E. Biggins
Detection and quantification of preferential flow using artificial rainfall with multiple experimental approaches Detection and quantification of preferential flow using artificial rainfall with multiple experimental approaches
Preferential flow in the unsaturated zone strongly influences important hydrologic processes, such as infiltration, contaminant transport, and aquifer recharge. Because it entails various combinations of physical processes arising from the interactions of water, air, and solid particles in a porous medium, preferential flow is highly complex. Major research is needed to improve the...
Authors
Maria Clementina Caputo, Lorenzo De Carlo, Rita Masciale, Kimberlie Perkins, Antonietta Celeste Turturro, John R. Nimmo
Response of lake metabolism to catchment inputs inferred using high-frequency lake and stream data from across the northern hemisphere Response of lake metabolism to catchment inputs inferred using high-frequency lake and stream data from across the northern hemisphere
In lakes, the rates of gross primary production (GPP), ecosystem respiration (R), and net ecosystem production (NEP) are often controlled by resource availability. Herein, we explore how catchment vs. within lake predictors of metabolism compare using data from 16 lakes spanning 39°N to 64°N, a range of inflowing streams, and trophic status. For each lake, we combined stream loads of...
Authors
Jessica R. Corman, Jacob Aaron Zwart, Jennifer Klug, Denise A Bruesewitz, Elvira de Eyto, Marcus Klaus, Lesley B. Knoll, James A. Rusak, Michael J. Vanni, Maria Belen Alfonso, Rocio Luz Fernandez, Huaxia Yao, Kari Austnes, Raoul-Marie Couture, Heleen A. de Wit, Jan Karlsson, Alo Laas
Horizon scanning for potentially invasive non-native marine species to inform trans-boundary conservation management – Example of the northern Gulf of Mexico Horizon scanning for potentially invasive non-native marine species to inform trans-boundary conservation management – Example of the northern Gulf of Mexico
Prevention of non-native species introductions and establishment is essential to avoid adverse impacts of invasive species in marine environments. To identify potential new invasive species and inform non-native species management options for the northern Gulf of Mexico (Alabama, Mississippi, Louisiana, Texas), 138 marine species were risk screened for current and future climate...
Authors
Kathryn A. O’Shaughnessy, Lorenzo Vilizzi, Wesley M. Daniel, Monica E. McGarrity, Hanna Bauer, Leslie Hartman, Stephen Geiger, Paul Sammarco, Steve Kolian, Scott Porter, Jessica Dutton, Matthew R. McClure, Michael Norberg, Alex Fogg, Timothy J. Lyons, Justin Procopio, Lauren Bantista, Wayne A Bennett, Mary Wicksten, David B. Reeves, Julie Lively, Elizabeth M. Robinson, Jorge Brenner, Joseph Goy, Ashley Morgan-Olvera, Anna L.E. Yunnie, Gordon H. Copp
Georectified polygon database of ground-mounted large-scale solar photovoltaic sites in the United States Georectified polygon database of ground-mounted large-scale solar photovoltaic sites in the United States
Over 4,400 large-scale solar photovoltaic (LSPV) facilities operate in the United States as of December 2021, representing more than 60 gigawatts of electric energy capacity. Of these, over 3,900 are ground-mounted LSPV facilities with capacities of 1 MWdc or more. Ground mounted LSPV installations continue increasing, with more than 400 projects appearing online in 2021 alone; however...
Authors
K. Sydny Fujita, Zachary H. Ancona, Louisa Kramer, Mary Straka, Tandie E. Gautreau, Dana Robson, Christopher P. Garrity, Ben Hoen, James E. Diffendorfer
Extinction risk modeling predicts range-wide differences of climate change impact on Karner blue butterfly (Lycaeides melissa samuelis) Extinction risk modeling predicts range-wide differences of climate change impact on Karner blue butterfly (Lycaeides melissa samuelis)
The Karner blue butterfly (Lycaeides melissa samuelis, or Kbb), a federally endangered species under the U.S. Endangered Species Act in decline due to habitat loss, can be further threatened by climate change. Evaluating how climate shapes the population trend of the Kbb can help in the development of adaptive management plans. Current demographic models for the Kbb incorporate in either...
Authors
Yudi Li, David Wilson, Ralph Grundel, Steven Campbell, Joe Knight, Jim Perry, Jessica J. Hellmann
Empirical estimation of habitat suitability for rare plant restoration in an era of ongoing climatic shifts Empirical estimation of habitat suitability for rare plant restoration in an era of ongoing climatic shifts
Accurate estimates of current and future habitat suitability are needed for species that may require assistance in tracking a shifting climate. Standard species distribution models (SDMs) based on occurrence data are the most common approach for evaluating climatic suitability, but these may suffer from inaccuracies stemming from disequilibrium dynamics and/or an inability to identify...
Authors
Paul Krushelnycky, Lucas Berio Fortini, Jeffrey Mallinson, Jesse Felts
Evidence of Seattle Fault earthquakes from patterns of deep-seated landslides Evidence of Seattle Fault earthquakes from patterns of deep-seated landslides
Earthquake‐induced landslides can record information about the seismic shaking that generated them. In this study, we present new mapping, Light Detection and Ranging‐derived roughness dating, and analysis of over 1000 deep‐seated landslides from the Puget Lowlands of Washington, U.S.A., to probe the landscape for past Seattle fault earthquake information. With this new landslide...
Authors
Erich Herzig, Alison Duvall, Adam Booth, Ian P. Stone, Erin A. Wirth, Sean Richard LaHusen, Joseph Wartman, Alex R. Grant
Movement dynamics influence population monitoring and adaptive harvest management strategies in migratory birds Movement dynamics influence population monitoring and adaptive harvest management strategies in migratory birds
Informed population monitoring efforts are essential for sound management of harvested species, and adaptive strategies that provide detailed information to monitoring efforts often require data inputs from complimentary sources. Movement ecology information is seldom directly incorporated into population monitoring or adaptive harvest management strategies, yet can provide valuable...
Authors
Jay Alan VonBank, Daniel P. Collins, Kristen S. Ellis, J. Patrick Donnelly, Jeffrey M. Knetter
Magnetotelluric insights into the formation and reactivation of trans-crustal shear zones in Precambrian basement of the eastern U.S. Midcontinent Magnetotelluric insights into the formation and reactivation of trans-crustal shear zones in Precambrian basement of the eastern U.S. Midcontinent
Three-dimensional inversion of regional long-period magnetotelluric (MT) data reveals the presence of two distinct sets of high-conductivity belts in the Precambrian basement of the eastern U.S. Midcontinent. One set, beneath Missouri, Illinois, Indiana, and western Ohio, is defined by northwest–southeast-oriented conductivity structures; the other set, beneath Kentucky, West Virginia...
Authors
Benjamin Scott Murphy, Michael S. DeLucia, Stephen Marshak, Dhananjay Ravat, Paul A. Bedrosian