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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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Making many out of one: Synthetic geologic deformation model distributions for use in USGS NSHM25‐PRVI Puerto Rico-U.S. Virgin Island update Making many out of one: Synthetic geologic deformation model distributions for use in USGS NSHM25‐PRVI Puerto Rico-U.S. Virgin Island update

A key use‐case of geologic slip rates is within deformation models used in probabilistic seismic hazard analyses. Field‐derived geologic slip rates have formed the cornerstone of deformation models in such applications for decades. Recent advancements in seismic hazard analyses have expanded the use of faults for which geologic slip rates are not well constrained using categorical slip...
Authors
Alexandra Elise Hatem, Kevin Ross Milner, Richard W. Briggs, Jessica A. Thompson Jobe

Post-hatch ecology, diet, and first migration of juvenile Alaskan Bar-tailed Godwits Post-hatch ecology, diet, and first migration of juvenile Alaskan Bar-tailed Godwits

Life stages between hatching and adult recruitment are poorly described for most migratory shorebird species and represent a critical knowledge gap in understanding long-term population dynamics. We conducted a pilot study on the Seward Peninsula, Alaska, to assess the feasibility of following juvenile Bar-tailed Godwits Limosa lapponica baueri from their breeding grounds to their non...
Authors
Jesse R. Conklin, Daniel R. Ruthrauff, Mihai Valcu, Yvonne I. Verkuil, James A. Johnson, Bart Kempenaers

Low streamflows in Massachusetts: Variability over space and time and relations with climatic and basin variables Low streamflows in Massachusetts: Variability over space and time and relations with climatic and basin variables

Streamflows in Massachusetts have set record lows in recent years despite generally wetter conditions than during the drought of the 1960s, and the reasons for this are not known. To analyse potential drivers of low streamflows in Massachusetts, six low-flow metrics were computed at 107 streamgages. These metrics represent low-flow magnitude, magnitude normalized to median flows, and...
Authors
Catherine A. Chamberlin, Glenn Hodgkins

Small cumulative survival costs of enzootic disease could suppress long-term population size Small cumulative survival costs of enzootic disease could suppress long-term population size

Fungal pathogens can cause epizootics that result in widespread mortality and rapid population declines in some species. However, even in the absence of high disease-induced mortality, enzootic mycoses could have large-scale impacts on host population dynamics. Here, we examined the effects of ophidiomycosis, an enzootic fungal disease, on a Louisiana snake community over a 3-year period...
Authors
Brad M. Glorioso, Graziella V. DiRenzo, Jeffrey M. Lorch, Brittany A. Mosher, David A.W. Miller, Evan H. Campbell Grant, Hardin Waddle

Exploring management options for moose at their southern range limits considering growing disease risk Exploring management options for moose at their southern range limits considering growing disease risk

1. Populations of cold-adapted species are increasingly vulnerable along their low-latitude range limits due to shifting environmental conditions, biotic interactions, and anthropogenic pressures. Managing these populations is particularly challenging because of complex ecological dynamics, conflicting stakeholder interests, and decision-making under uncertainty. 2. We explored...
Authors
Jennifer A. Grauer, Jacqueline L. Frair, Krysten L. Schuler, David W. Kramer, Angela K. Fuller

Ecovoltaic solar energy development creates novel microclimate, temperature, and soil moisture patterns under solar panels in a warm desert Ecovoltaic solar energy development creates novel microclimate, temperature, and soil moisture patterns under solar panels in a warm desert

Background: As solar energy development expands in desert regions, new installation practices and solar technologies seek to balance ecosystem conservation and energy generation (ecovoltaics). The Gemini Solar Project, a large ecovoltaic facility located in the northeastern Mojave Desert, employed low impact installation methods to reduce disturbance of the desert ecosystem within arrays...
Authors
Juan Pinos, Seth M. Munson, Claire C Karban, Matthew D. Petrie

Extrinsic factors similarly affect nest survival of a threatened shorebird in natural and human-created habitats Extrinsic factors similarly affect nest survival of a threatened shorebird in natural and human-created habitats

Knowledge of factors that influence nest survival can inform effective conservation management for imperiled avian species. Habitat availability and quality are common priorities of conservation efforts, and climate and interspecific associations can also affect survival rates. In the lower Platte River system of eastern Nebraska, USA, Piping Plovers (Charadrius melodus, hereafter...
Authors
Elsa M. Forsberg, Rose J. Swift, Larkin A. Powell, Joel G. Jorgensen, Mark P. Vrtiska

Creating usable science: A Southwest Climate Adaptation Science Center study Creating usable science: A Southwest Climate Adaptation Science Center study

The southwestern United States consists of diverse ecosystems that are experiencing increasing pressures from rising temperatures, increasing aridity, and sea level rise. To prepare this region for future uncertainty, there is a need for strong partnerships among researchers and societal partners. The Southwest Climate Adaptation Science Center (SW CASC) acts to foster engaged...
Authors
Kinzie Cherrel Bailey, Jia Hu, Alison M. Meadow, Stephanie Anne McAfee, Alexandder Gershunov, Carolyn Armstrong Enquist, Daniel Cayan, Beth Rose MIddleton Manning, Elizabeth Fard, Geln MacDonald, Gregg M. Garfin, Michelle Baker, Nancy Huntly, Richard F. Ambroase

Multiscale resource selection for a reintroduced elk population Multiscale resource selection for a reintroduced elk population

Patterns of resource selection are driven by the decision-making processes of animals occurring at multiple scales from where to establish a home range (i.e., second order selection) to which resource patches to use within the home range (i.e., third order selection). Elk (Cervus canadensis) were reintroduced to southwestern Virginia, USA, from 2012 to 2014 following successful...
Authors
Braiden A. Quinlan, Brett R. Jesmer, Jacalyn P. Rosenberger, W. Mark Ford, Michael J. Cherry

Investigating the influence of climate and volcanic surface aging on fluvial erosion: A case study of Réunion Island, Indian Ocean Investigating the influence of climate and volcanic surface aging on fluvial erosion: A case study of Réunion Island, Indian Ocean

Precipitation is one of the dominant drivers of landscape erosion and evolution; however, the effects of typical rainfall compared with less frequent, high-magnitude precipitation events on erosion remain unclear. Volcanic islands are ideal locations to study such phenomena due to their simple geometries, nontectonic construction, and strong spatiotemporal rainfall gradients. However...
Authors
Daniel James O'hara, Loraine Gourbet, Laurent Michon, Vincent Famin

Challenges and opportunities for national-scale projections of future coastal landscape change Challenges and opportunities for national-scale projections of future coastal landscape change

Local to global scale projections of future coastal landscape change are essential to improve land and resource management decisions that aim to prepare for and reduce risk exposure to impending coastal hazards. However, the availability of actionable knowledge is often limited due to the complexity of drivers of change, their consequences, and uncertainties that span disciplines...
Authors
Erika E. Lentz, Davina L. Passeri, Sara L. Zeigler, Kate White, Thomas Wahl, Amanda D. Stoltz, Elizabeth A. Pendleton, Shubhra Misra, Trevor D. Meckley, Ben Hamlington, Neil K. Ganju, Amanda E. Cravens, Joel Carr, Christine A. Buckel

Organic matter integration, overprinting, and the relative fraction of optically active organic carbon in a human-impacted watershed Organic matter integration, overprinting, and the relative fraction of optically active organic carbon in a human-impacted watershed

Rivers continually integrate terrestrial organic matter (OM) into their waters, in a process that transfers 1.9 Pg C yr–1 as the primary linkage between oceanic and terrestrial carbon cycles. Yet rivers are not simple, conservative OM integrators. Patchy local land uses (wetlands, bogs, agriculture) release OM that can disproportionately alter river biogeochemistry and overprint upstream...
Authors
Robert S. Eckard, Brian A. Bergamaschi, Brian A. Pellerin, Robert G. Spencer, Rachel Y. Dyda, Peter J. Hernes
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