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
Response of Tiger Salamanders (Ambystoma t. tigrinum) to wetland restoration in a midwestern agricultural landscape, U.S.A. Response of Tiger Salamanders (Ambystoma t. tigrinum) to wetland restoration in a midwestern agricultural landscape, U.S.A.
Since the early 1990s, > 3,000 ha of wetlands (and adjacent prairie) have been restored on the row-crop agricultural landscape of Winnebago County, Iowa, U.S.A. From 2014–2016, we surveyed 45 wetlands among 19 easements for occupancy by Eastern Tiger Salamanders (Ambystoma tigrinum tigrinum) and used radio-telemetry to measure their patterns of movement and habitat use. Rates of...
Authors
Paul E. Bartelt, Alyse T. Devries, Robert W. Klaver
Spatial asynchrony and cross-scale climate interactions in populations of a coldwater stream fish Spatial asynchrony and cross-scale climate interactions in populations of a coldwater stream fish
Climate change affects populations over broad geographic ranges due to spatially autocorrelated abiotic conditions known as the Moran effect. However, populations do not always respond to broad-scale environmental changes synchronously across a landscape. We combined multiple datasets for a retrospective analysis of time-series count data (5–28 annual samples per segment) at 144 stream...
Authors
George Valentine, Xinyi Lu, Evan S. Childress, C. Andrew Dolloff, Nathaniel P. Hitt, Matthew Kulp, Benjamin Letcher, Kasey C. Pregler, Jacob Rash, Mevin B. Hooten, Yoichiro Kanno
Stress gradients structure spatial variability in coastal tidal marsh plant composition and diversity in a major Pacific coast estuary Stress gradients structure spatial variability in coastal tidal marsh plant composition and diversity in a major Pacific coast estuary
Understanding the drivers of variability in plant diversity from local to landscape spatial scales is a challenge in ecological systems. Environmental gradients exist at several spatial scales and can be nested hierarchically, influencing patterns of plant diversity in complex ways. As plant community dynamics influence ecosystem function, understanding the drivers of plant community...
Authors
Lyndsay L. Rankin, Scott F. Jones, Christopher N. Janousek, Kevin J. Buffington, John Takekawa, Karen M. Thorne
Cisco population characteristics in Wisconsin lakes in relation to lake- and landscape-level factors Cisco population characteristics in Wisconsin lakes in relation to lake- and landscape-level factors
Objective
Authors
Daniel J. Dembkowski, Jeremiah S. Shrovnal, Timothy P. Parks, Greg G. Sass, John Lyons, Daniel A. Isermann
Observing coastal wetland transitions using national land cover products Observing coastal wetland transitions using national land cover products
Over the coming century, climate change and sea-level rise are predicted to cause widespread change to coastal wetlands. Estuarine vegetated wetlands can adapt to sea-level rise through both vertical development (i.e., biophysical feedbacks and sedimentation) and upslope/horizontal migration. Quantifying changes to estuarine vegetated wetlands over time can help to inform current and...
Authors
Nicholas Enwright, Michael Osland, Karen M. Thorne, Glenn R. Guntenspergen, James Grace, Gregory Steyer, Nate Herold, Bogdan Chivoiu, Minoo Han
Grizzly bear responses to restrictions of recreation in Yellowstone National Park Grizzly bear responses to restrictions of recreation in Yellowstone National Park
Avoiding humans will be more difficult and energetically costly for animals as outdoor recreation increases and people venture farther into wildland areas that provide high-quality habitat for wildlife. Restricting human access can be an attractive management tool to mitigate effects of human recreation activities on wildlife; however, the efficacy of such measures is rarely assessed. In...
Authors
Elise Loggers, Andrea R. Litt, Frank T. van Manen, Mark A. Haroldson, Kerry A. Gunther
Evaluation of the US COVID-19 Scenario Modeling Hub for informing pandemic response under uncertainty Evaluation of the US COVID-19 Scenario Modeling Hub for informing pandemic response under uncertainty
Our ability to forecast epidemics far into the future is constrained by the many complexities of disease systems. Realistic longer-term projections may, however, be possible under well-defined scenarios that specify the future state of critical epidemic drivers. Since December 2020, the U.S. COVID-19 Scenario Modeling Hub (SMH) has convened multiple modeling teams to make months ahead...
Authors
Emily Howerton, Lucie Contamin, Luke C Mullany, Michelle Qin, Nicholas G. Reich, Samantha Bents, Rebecca K. Borchering, Sung-mok Jung, Sara L Loo, Claire P. Smith, John Levander, Jessica Kerr, J. Espino, Willem G. van Panhuis, Harry Hochheiser, Marta Galanti, Teresa K Yamana, Sen Pei, Jeffrey L. Shaman, Kaitlin Rainwater-Lovett, Matt Kinsey, Kate Tallaksen, Shelby Wilson, Lauren Shin, Joseph C Lemaitre, Joshua Kaminsky, Juan Dent Hulse, Elizabeth C. Lee, Clif McKee, Alison Hill, Dean Karlen, Matteo Chinazzi, Jessica T Davis, Kunpeng Mu, Xinyue Xiong, Ana Pastore Piontti, Alessandro Vespignani, Erik T Rosenstrom, Julie S Ivy, Maria E Mayorga, Julie L Swann, Guido Espana, Sean Cavany, Sean Moore, Alex Perkins, Thomas J. Hladish, Alexander N. Pillai, Kok Ben Toh, Ira Longini, Shi Chen, Rajib Paul, Daniel Janies, Jean-Claude Thill, Anass Bouchnita, Kaiming Bi, Michael Lachmann, Spencer Fox, Lauren Ancel Meyers, Ajitesh Srivastava, Przemyslaw Porebski, Srinivasan Venkatramanan, Aniruddha Adiga, Bryan Lewis, Brian Klahn, Joseph Outten, Benjamin Hurt, Jiangzhuo Chen, Henning Mortveit, Amanda Wilson, Madhav Marathe, Stefan Hoops, Parantapa Bhattacharya, Dustin Machi, Betsy L Gunnels, Jessica M Healy, Rachel B. Slayton, Michael A Johansson, Matthew Biggerstaff, Shaun Truelove, Michael C. Runge, Katriona Shea, Cecile Viboud, Justin Lessler
Symposia summaries 2023 Symposia summaries 2023
No abstract available.
Authors
Brian D. Healy, Joshua A. Israel
Chemistry and petrography of early 19th century basaltic andesites and basalts from the Kamakaiʻa Hills in the Southwest Rift Zone of Kīlauea volcano, Hawaiʻi Chemistry and petrography of early 19th century basaltic andesites and basalts from the Kamakaiʻa Hills in the Southwest Rift Zone of Kīlauea volcano, Hawaiʻi
Kīlauea is a frequently active, open-system volcano on the Island of Hawaiʻi known for erupting olivine-dominated tholeiitic basalt compositions. On rare occasions it erupts more differentiated magmas (
Authors
Drew T. Downs, May Sas, Richard W. Hazlett
Coyotes in the Great Basin desert do not exhibit a spatial response following the removal of anthropogenic water sources Coyotes in the Great Basin desert do not exhibit a spatial response following the removal of anthropogenic water sources
Coyote (Canis latrans) range expansion into desert ecosystems has highlighted the role of anthropogenic water sources in arid ecosystems. Despite hypotheses that additional water facilitated this expansion, previous studies reported that coyotes did not exhibit a spatial or dietary response to removal of anthropogenic water. We used GPS data to examine if coyotes responded to water...
Authors
Nadine Pershyn, Eric Gese, Erica Francis Stuber, Brian Kluever
Modeling groundwater-level responses to multiple stresses using transfer-function models and wavelet analysis in a coastal aquifer system Modeling groundwater-level responses to multiple stresses using transfer-function models and wavelet analysis in a coastal aquifer system
In coastal aquifers, dynamic stresses such as climate forcings, groundwater withdrawals, and ocean tidal fluctuations cause nonlinear responses to groundwater levels. Such responses to the stresses impact groundwater resources and related flooding and infrastructure risks at multiple scales. We used time-series models such as transfer-function models and wavelet analysis to quantify the...
Authors
Guoxiang Yang, Kurt J. McCoy
Toxicity of wildland fire retardants to rainbow trout in short exposures Toxicity of wildland fire retardants to rainbow trout in short exposures
Long-term wildland fire retardants are one important tool used to control and suppress wildfires. During suppression activities, these retardants may enter waterbodies; thus, there is a need to understand their potential effects to aquatic biota. We investigated the effect of three current-use wildland fire retardants to juvenile rainbow trout (Oncorhynchus mykiss) survival in short...
Authors
Holly J. Puglis, Michael G. Iacchetta