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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.

Filter Total Items: 175531

Mid-Atlantic big brown and eastern red bats: Relationships between acoustic activity and reproductive phenology Mid-Atlantic big brown and eastern red bats: Relationships between acoustic activity and reproductive phenology

Acoustic data are often used to describe bat activity, including habitat use within the summer reproductive period. These data inform management activities that potentially impact bats, currently a taxa of high conservation concern. To understand the relationship between acoustic and reproductive timing, we sampled big brown bats (Eptesicus fuscus) and eastern red bats (Lasiurus borealis...
Authors
Sabrina Deeley, W. Mark Ford, Nicholas Kalen, Samuel R. Freeze, Micheal St. Germain, Michael Muthersbaugh, Elaine Barr, Andrew Kniowski, Alexander Silvis, Jesse De La Cruz

Pollen records, postglacial: Southeastern North America Pollen records, postglacial: Southeastern North America

Pollen records from the unglaciated southeastern region of North America provide an overview of biogeographic changes associated with vegetational migration northward following the retreat of the Laurentide Ice Sheet. Changing insolation during the Holocene affected forest composition on the Coastal Plain, and rising sea level controlled the distribution of marsh and forested wetlands...
Authors
Debra A. Willard

Population estimates and land cover use of wintering Mountain Plovers in Texas Population estimates and land cover use of wintering Mountain Plovers in Texas

Conservation of migratory birds throughout the full annual cycle requires a comprehensive understanding of abundance and distribution in interconnected breeding, migration, and wintering habitats. The Mountain Plover (Anarhynchus montanus) is a rare endemic breeder of the Rocky Mountain and Great Plains regions that migrates to wintering grounds in the southwestern USA and northern...
Authors
James E. Lyons, Brad A. Andres, Kelli L. Stone, Allison K. Pierce, Kammie L. Kruse

Reconnaissance basement geology and tectonics of North Zealandia Reconnaissance basement geology and tectonics of North Zealandia

New rock dredge samples supply key information to establish the tectonic and geological framework of the northern two-thirds of the 95% submerged Zealandia continent. The R/V Investigator voyage IN2016T01 to the Fairway Ridge, Coral Sea, obtained poorly sorted poly-lithologic pebbly to cobbly sandstones, well sorted fine grained sandstones, mudstones, bioclastic limestones, and basaltic...
Authors
Nick Mortimer, Simon Williams, Maria Seton, Andrew T. Calvert, Tod Waight, Rose E. Turnbull, Demian Nelson, Mike Palin, Jahandar Ramezani, Matthew W. Sagar, Andy Tulloch, Wanda Stratford, Julien Collot, Samuel Etienne

Reevaluation of thermal maturity and stages of petroleum formation of the Mississippian Barnett Shale, Fort Worth Basin, Texas Reevaluation of thermal maturity and stages of petroleum formation of the Mississippian Barnett Shale, Fort Worth Basin, Texas

New data including measured reflectance (%Ro), programmed open-system pyrolysis data, and kerogen elemental analyses obtained on the Mississippian Barnett Shale in the Fort Worth Basin, Texas, indicate that secondary-gas generation starts at 1.5% Ro and not at the previously prescribed 1.1% Ro. Oil-cracking kinetic parameters derived from pyrolysis experiments in the presence and absence...
Authors
Michael Lewan, M.J. Pawlewicz

Remote sensing-based actual evapotranspiration assessment in a data-scarce area of Brazil: A case study of the Urucuia Aquifer System Remote sensing-based actual evapotranspiration assessment in a data-scarce area of Brazil: A case study of the Urucuia Aquifer System

The large groundwater reserves of the Urucuia Aquifer System (UAS) enabled agricultural development and economic growth in the western Bahia State, in northeastern Brazil. Over the last several years, concern has grown around the aquifer’s diminishing water levels, and water balance (WB) studies are in demand. Considering the lack of measured actual evapotranspiration (ETa), a major...
Authors
Bruno César Comini de Andrade, Eber José de Andrade Pinto, Anderson Ruhoff, Gabriel B. Senay

Restoring aquatic habitats through dam removal Restoring aquatic habitats through dam removal

This report presents results from a four-year project (2018–2022) to document the effects of small, run-of-river dams and dam removal on water quality (stream temperature and dissolved oxygen (DO)), aquatic macroinvertebrates, and fishes. Temperature and DO are critical water quality parameters that shape biogeochemical processes and biotic assemblages in streams. Macroinvertebrate and...
Authors
Katherine M. Abbott, Allison H. Roy, Keith Nislow

Seasonal spatial ecology of Lake Trout in Lake Erie Seasonal spatial ecology of Lake Trout in Lake Erie

Objective Lake Trout Salvelinus namaycush are native coldwater apex predators that play an important role in maintaining ecosystem functionality and diversity in the Laurentian Great Lakes. Following population collapses, rehabilitation efforts were widely initiated in the Great Lakes to reestablish self‐sustaining Lake Trout populations. Lake Erie may pose a challenge to these...
Authors
Tyler Funnell, Travis Brenden, Richard Kraus, Tom MacDougall, James Markham, Charles Richard Murray, Jason Robinson, Christopher S. Vandergoot

Strontium isotopes reveal diverse life history variations, migration patterns, and habitat use for Broad Whitefish (Coregonus nasus) in Arctic, Alaska Strontium isotopes reveal diverse life history variations, migration patterns, and habitat use for Broad Whitefish (Coregonus nasus) in Arctic, Alaska

Conservation of Arctic fish species is challenging partly due to our limited ability to track fish through time and space, which constrains our understanding of life history diversity and lifelong habitat use. Broad Whitefish (Coregonus nasus) is an important subsistence species for Alaska’s Arctic Indigenous communities, yet little is known about life history diversity, migration...
Authors
Jason C. Leppi, Daniel J. Rinella, Mark S. Wipfli, Randy J. Brown, Karen J. Spaleta, Matthew S. Whitman

Supporting the adaptive capacity of species through more effective knowledge exchange with conservation practitioners Supporting the adaptive capacity of species through more effective knowledge exchange with conservation practitioners

There is an imperative for conservation practitioners to facilitate the ability of biodiversity to adapt to accelerating environmental change. Evolutionary biologists are well-positioned to inform the development of evidence-based management strategies that will effectively support the adaptive capacity of species and ecosystems. Conservation practitioners increasingly accept that...
Authors
Carly N. Cook, Erik A. Beever, Lindsey Thurman, Laura Thompson, John E. Gross, Andrew R. Whiteley, Adrienne Nicotra, Jennifer A. Szymanski, Carlos Botero, Kimberley Hall, Ary A. Hoffmann, Gregor W. Schuurman, Carla Sgro

The diets of wild and reintroduced whooping cranes The diets of wild and reintroduced whooping cranes

Abstract: We characterized the diets of the recently established Eastern Migratory Population (EMP) and the extant Aransas Wood Buffalo population (AWBP). Starting in 2013, frozen proventriculus and ventriculus contents from previously collected dead whooping cranes from both populations were examined to identify dietary items and quantity. EMP whooping cranes (n = 29) consumed benthic...
Authors
Heather A. Neri, Glenn H. Olsen, Eric C. Kindahl, Susan L. Carney

Thicknesses of lava flows in satellite images: Comparison of layered mare units with terrestrial analogs Thicknesses of lava flows in satellite images: Comparison of layered mare units with terrestrial analogs

Recent advances in satellite imaging technology have greatly improved our observations of planetary surfaces. The Lunar Reconnaissance Orbiter (LRO) Narrow Angle Camera (NAC) records images with resolutions on average of 0.5 m per pixel, resolving meter scale features on the surface of the Moon. NAC images have revealed layered deposits, interpreted to be sequences of mare basalt flows...
Authors
M. Elise Rumpf, Heidi Needham, Sarah A. Fagents
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