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.
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Neonate morphometrics and lambing season characteristics of desert bighorn sheep Neonate morphometrics and lambing season characteristics of desert bighorn sheep
Desert bighorn sheep (Ovis canadensis) populations often occur in remote areas at low densities, leading to gaps in knowledge of life history. In November 2011, we translocated 11 female desert bighorn sheep from the Fra Cristobal Mountains and 9 from Red Rock Wildlife Management Area (RRWMA) to the Peloncillo Mountains in southwestern New Mexico. In December 2012, we captured 21 adult...
Authors
Grace L. Parikh, Rebekah C. Karsch, James W. Cain, Eric M. Rominger, Elise J. Goldstein
Mountain sentinels in a changing world: Review and conservation implications of weather and climate effects on mountain goats (Oreamnos americanus) Mountain sentinels in a changing world: Review and conservation implications of weather and climate effects on mountain goats (Oreamnos americanus)
Climate change is occurring at an accelerated rate in high-elevation alpine and mountain ecosystems. Cold-adapted, mountain species are at risk due to forecasted change and knowledge is needed to respond to current and future conservation challenges. Mountain goats (Oreamnos americanus) are an iconic species of North American mountain cultures and landscapes, and due to specialized...
Authors
Kevin White, Becky Cadsand, Steeve D. Cote, Tabitha A. Graves, Sandra Hamel, Richard B. Harris, Forest Hayes, Eran Hood, Kevin Hurley, Tyler Jessen, Bill Jex, Erich H. Peitzsch, Wesley Sarmento, Helen M. Schwantje, Joel Berger
Agricultural return flow dynamics on a reach of the East River, Colorado, as assessed by mass balance Agricultural return flow dynamics on a reach of the East River, Colorado, as assessed by mass balance
The U.S. Geological Survey, in cooperation with the Upper Gunnison River Water Conservancy District, studied historical streamflow in a reach of the East River, Colorado, to gain a preliminary understanding of return flow dynamics. Return flow is agricultural irrigation water that is not consumed by evapotranspiration and instead reaches streams by surface and subsurface flow paths. The...
Authors
Carleton R. Bern, Rachel G. Gidley
Effects of exploitation and emigration on apparent survival of Walleye in Lake Sharpe, South Dakota Effects of exploitation and emigration on apparent survival of Walleye in Lake Sharpe, South Dakota
Objective In 2017, we began a 5-year mark–recapture study to estimate apparent survival of Walleye Sander vitreus and angler exploitation in Lake Sharpe, South Dakota, and inform management strategies for this fishery. The study revealed substantial downstream emigration of Walleye; therefore, we also examined the influence of emigration on apparent mortality.Methods We estimated Walleye...
Authors
Laurel H. Sacco, Mark J. Fincel, Cameron W. Goble, Tanner Davis, Steven R. Chipps
Presence-absence surveys yield spatially imprecise information about nesting sites of an endangered, forest-nesting seabird Presence-absence surveys yield spatially imprecise information about nesting sites of an endangered, forest-nesting seabird
Presence-absence surveys are frequently used to monitor populations of rare and elusive species. Such data may also be used as a proxy for breeding activity, but links between presence-absence data and higher-order processes must be validated to determine their reliability. The Marbled Murrelet (Brachyramphus marmoratus) is a threatened seabird that nests in older-aged forests along the...
Authors
Jonathan J. Spurgeon, Lindsay J. Adrean, S. Kim Nelson, Matthew G. Betts, Daniel D. Roby, James W. Rivers
Intrinsic and environmental drivers of pairwise cohesion in wild Canis social groups Intrinsic and environmental drivers of pairwise cohesion in wild Canis social groups
Animals within social groups respond to costs and benefits of sociality by adjusting the proportion of time they spend in close proximity to other individuals in the group (cohesion). Variation in cohesion between individuals, in turn, shapes important group-level processes such as subgroup formation and fission–fusion dynamics. Although critical to animal sociality, a comprehensive...
Authors
John F. Benson, David A. Keiter, Peter J. Mahoney, Benjamin L. Allen, Lee R. Allen, Francisco Álvares, Morgan L. Anderson, Shannon M. Barber-Meyer, Adi Barocas, James C Beasley, Linda Behrendorff, Jerrold L. Belant, Dean Beyer, Luigi Boitani, Bridget L Borg, Stan Boutin, Erin E. Boydston, Justin L. Brown, Joseph K. Bump, Jonathon D. Cepek, Michael J Chamberlain, Yvette M. Chenaux-Ibrahim, Seth G. Cherry, Duško Ćirović, Paolo Ciucci, H. Dean Cluff, Susan M Cooper, Kevin R. Crooks, Daniel L.J. Dupont, Robert N. Fisher, Daniel Fortin, Thomas D. Gable, Emilio Garcia, Eli Geffen, Stanley D. Gehrt, Michael Gillingham, Douglas C. Heard, Mark Hebblewhite, Joseph W Hinton, Austin T. Homkes, Chris G. Howden, Djuro Huber, Pat J. Jackson, Kyle Joly, Allicia P Kelly, Marcella J. Kelly, Katrien A. Kingdon, Abhijeet Kulkarni, Josip Kusak, Gerald W. Kuzyk, Bryce C. Lake, Luis Llaneza, Jose Vicente Lopez-Bao, Daniel R. MacNulty, Ashley A.D. McLaren, Philip D. McLoughlin, Evelyn H. Merrill, Kenneth J. Mills, Numi Mitchell, Seth A. Moore, Matthew Mumma, Maureen H. Murray, Marco Musiani, Mónia Nakamura, Eric W. Neilson, Lalenia M. Neufeld, Thomas M Newsome, John K. Oakleaf, Vincente Palacios, Marlo M. Perdicas, Thomas Perry, Tyler R. Petroelje, Cyrenea B. Piper, Christina M. Prokopenko, Laura R. Prugh, Seth P.D. Riley, Helena Rio-Maior, Gretchen H. Roffler, Dale Rollins, Håkan Sand, Fiona K A Schmiegelow, Dale R. Seip, Mathew S Sorum, Colleen C. St. Clair, Robin Steenweg, Michael W. Strohbach, Jack Tatler, Maria Thaker, Connor A. Thompson, Julia W. Turner, Abi Tamim Vanak, Eric Vander Wal, Petter Wabakken, Scott E Walter, Sarah C Webster, Tyler J. Wheeldon, Camilla Wikenros, Steve K. Windels, Julie K. Young, Sana Zabihi-Seissan, Barbara Zimmermann, Brent R. Patterson
A multidisciplinary approach that considers occurrence, geochemistry, bioavailability, and toxicity to prioritize critical minerals for environmental research A multidisciplinary approach that considers occurrence, geochemistry, bioavailability, and toxicity to prioritize critical minerals for environmental research
Critical minerals (or critical elements) are minerals or elements that are essential to global security and development and have supply chains vulnerable to disruption. In general, knowledge of the environmental behavior and health effects of critical elements is needed to support the development of safe and environmentally responsible supplies. This knowledge includes identifying...
Authors
Sarah Jane White, Tyler Kane, Kate M. Campbell, Marie Noele Croteau, Michael G. Iacchetta, Johanna Blake, Charles A. Cravotta, Bethany K. Kunz, Charles N. Alpers, Jill Jenkins, Katherine Walton-Day
By
Environmental Health Program, Mineral Resources Program, California Water Science Center, Colorado Water Science Center, Columbia Environmental Research Center, Geology, Energy & Minerals Science Center, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Pennsylvania Water Science Center, Wetland and Aquatic Research Center
Late Amazonian ice near Athabasca Valles, Mars: Recent megaflood or climate change? Late Amazonian ice near Athabasca Valles, Mars: Recent megaflood or climate change?
The Athabasca Valles outflow channel system is among the youngest such channels on Mars, with the Athabasca Valles flood lava (AVFL) covering the channel floor and reaching far beyond. Volcanic rootless cones on the AVFL indicate the presence of H2O in the shallow subsurface at the time of lava emplacement. However, Athabasca Valles are near the equator, where ice would rapidly sublime...
Authors
Colin M. Dundas, Laszlo P. Keszthelyi, Kaj E. Williams
Seasonal resource selection of a grassland bird in a dynamic landscape: Importance of a heterogeneous landscape Seasonal resource selection of a grassland bird in a dynamic landscape: Importance of a heterogeneous landscape
Habitat loss and fragmentation are a growing threat to wildlife, and a better understanding of these landscape processes is needed to mitigate their effects on species populations. Grassland biomes are among the most imperiled ecosystems in the world, and grassland birds are experiencing significant population declines in North America. Understanding how species respond to differences in...
Authors
Sprih Harsh, Robert Charles Lonsinger, Hilary R. Kauth, Andrew J. Gregory
U.S. Geological Survey science strategy to address chronic wasting disease and cervid health in 2024–2028 U.S. Geological Survey science strategy to address chronic wasting disease and cervid health in 2024–2028
Chronic wasting disease (CWD), a neurological disease similar to scrapie in goats and sheep, has been spreading since the 1960s throughout cervid populations in the United States. It is currently detected in 30 States and now also extends to Canada, Korea, and Scandinavia. CWD is a fatal disease caused by an infectious abnormally folded prion protein. Population-level effects of CWD on...
Authors
Jason Ferrante, Jonathan D. Cook, Paul C. Cross, M. Camille Hopkins
Evidence of nitrate attenuation in intertidal and subtidal groundwater in a subterranean estuary at a Cape Cod embayment, East Falmouth, Massachusetts, 2015–16 Evidence of nitrate attenuation in intertidal and subtidal groundwater in a subterranean estuary at a Cape Cod embayment, East Falmouth, Massachusetts, 2015–16
Nitrogen dynamics in intertidal and nearshore subtidal groundwater (subterranean estuary) adjacent to the Seacoast Shores peninsula, Falmouth, Massachusetts, were investigated during 2015–16 by the U.S. Geological Survey. The peninsula is a densely populated residential area with septic systems and cesspools that are substantial sources of nitrogen to groundwater. The study area is in...
Authors
Thomas G. Huntington, Kevin D. Kroeger, Timothy D. McCobb, J.K. Bohlke, John A. Colman, Thomas W. Brooks, Beata Syzmczycha
Streamflow characteristics and trends in New Jersey, water years 1903–2017 Streamflow characteristics and trends in New Jersey, water years 1903–2017
As New Jersey’s population density remains high, so does its requirements for water management. Understanding the streamflow conditions throughout the state and how they may have changed over time is an important part of managing the water resources within the state. The New Jersey Department of Environmental Protection has many responsibilities related to protecting the environment and...
Authors
Amy R. McHugh, Thomas P. Suro, Samantha L. Sullivan, Brianna Williams