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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Mission Area Publications
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Characterization of change in tree cover state and condition over the conterminous United States Characterization of change in tree cover state and condition over the conterminous United States
Variability in the effects of disturbances and extreme climate events can lead to changes in tree cover over time, including partial or complete loss, with diverse ecological consequences. It is therefore critical to identify in space and time the change processes that lead to tree cover change. Studies of change are often hampered by the lack of data capable of consistently detecting...
Authors
Francis K Dwomoh, Roger F. Auch
Summary of annual repeat magnetotelluric surveys of the Geysers geothermal field Summary of annual repeat magnetotelluric surveys of the Geysers geothermal field
As part of a multi-year project, funded by the California Energy Commission, annual magnetotelluric (MT) surveys have been collected at The Geysers geothermal field in northern California with the goal of measuring temporal changes within the steam field. The repeat surveys started in 2021 and repeated a 2017 survey (Peacock et al., 2020) with further extension to the southern part of...
Authors
Jared R. Peacock, David Alumbaugh, Michael Albert Mitchell, C. Hartline
Nonbreeding waterfowl behavioral response to crewed and uncrewed aerial surveys on conservation areas in Missouri Nonbreeding waterfowl behavioral response to crewed and uncrewed aerial surveys on conservation areas in Missouri
Monitoring waterfowl populations provides the basis for improving habitat quantity and quality, establishing harvest regulations, and ensuring sustainable waterfowl populations through appropriate management. Waterfowl biologists currently use a variety of population and habitat monitoring methods ranging from informal ground observations to low-level occupied aircraft surveys. Although...
Authors
Reid A. Viegut, Elisabeth B. Webb, Andrew H. Raedeke, Zhicheng Tang, Yang Zhang, Yi Shang
Comparison of two otolith processing methods for silver carp age estimation Comparison of two otolith processing methods for silver carp age estimation
Accurate age estimates are critical in the development, implementation, and assessment of silver carp (Hypophthalmichthys molitrix) management plans. Lapilli otoliths are the most commonly used calcified structures for silver carp age estimation, but studies on the precision of two established preparation methods [i.e., grind-and-burn (GB), thin-section (TS)] are lacking. Therefore, we...
Authors
Jeff N. Stevens, Cooper E. Barshinger, Jonathan J. Spurgeon, Michael A. Eggleton, Steve E. Lochmann
Delta blue(green)s: The effect of drought and drought-management actions on microcystis in the Sacramento–San Joaquin Delta Delta blue(green)s: The effect of drought and drought-management actions on microcystis in the Sacramento–San Joaquin Delta
Cyanobacterial phytoplankton blooms are more prevalent in the freshwater Sacramento-San Joaquin Delta (Delta) since the late 1990s, including blooms driven by overgrowths of potentially toxigenic organisms of the genus Microcystis. Data from 2014 to 2021 were used to show how flow dynamics, water temperature, and water clarity drive occurrence of Microcystis. We used a Microcystis bloom...
Authors
Keith Bouma-Gregson, David Bosworth, Theodore M. Flynn, Amanda Maguire, Jenna Rinde, Rosemary Hartman
Second guessing the maximum likelihood estimator values for bat surveys Second guessing the maximum likelihood estimator values for bat surveys
TThe U.S. Fish and Wildlife Service allows acoustical surveys and automated identification software to determine the presence of the endangered northern long-eared bat (Myotis septentrionalis) and Indiana bat (Myotis sodalis). Analytical software is required to assess presence probability on a site-night basis using a maximum likelihood estimator (MLE) that accounts for interspecific bat
Authors
W. Mark Ford, Jesse L. De La Cruz, Emily D. Thorne, Alexander Silvis, Michael P. Armstrong, R. Andrew King
Southern fox squirrel and eastern gray squirrel interactions in a fire-maintained ecosystem Southern fox squirrel and eastern gray squirrel interactions in a fire-maintained ecosystem
Southern fox squirrels (Sciurus niger niger) have been declining due to habitat fragmentation, cover type conversion, and fire suppression in the Southeast. A decrease in growing season burns has led to hardwood encroachment and forest mesophication that benefit the competing eastern gray squirrels (S. carolinensis). In the southern Coastal Plain and Piedmont of Virginia, these pattern...
Authors
M.H. Guill, J.L. De La Cruz, M. Puckett, S.D. Klopfer, B. Martin, W. Mark Ford
Second guessing the maximum likelihood estimator values for bat surveys. Second guessing the maximum likelihood estimator values for bat surveys.
The U.S. Fish and Wildlife Service allows acoustical surveys and automated identification software to determine the presence of the endangered northern long-eared bat (Myotis septentrionalis) and Indiana bat (Myotis sodalis). Analytical software is required to assess presence probability on a site-night basis using a maximum likelihood estimator (MLE) that accounts for interspecific bat
Authors
W. Mark Ford, Jesse L. De La Cruz, Emily D. Thorne, Alexander Silvis, Michael P. Armstrong, R. Andrew King
Seasonal activity patterns of northern long-eared bats at hibernacula in western Virginia Seasonal activity patterns of northern long-eared bats at hibernacula in western Virginia
Understanding the relationships of biotic and abiotic factors to seasonal activity at hibernacula is important for the conservation of bats impacted by white-nose syndrome (WNS). Research on the relative and probable activity patterns of the federally endangered northern long-eared bat (Myotis septentrionalis) primarily has focused on summer maternity colonies, whereas surveys at...
Authors
Jesse L. De La Cruz, Richard J. Reynolds, Wil Orndorff, Thomas Malabad, Katarina Kosic Ficco, Karen E. Powers, W. Mark Ford
Seasonal activity patterns of northern long-eared bats on the coastal Mid-Atlantic Seasonal activity patterns of northern long-eared bats on the coastal Mid-Atlantic
Conservation of bats declining from white-nose syndrome (WNS) impacts requires an understanding of both temporal and landscape-level habitat relationships. Traditionally, much of the research on bat ecology has focused on behavior of summer maternity colonies within species’ distribution cores, including that of the endangered northern long-eared bat (Myotis septentrionalis). To further...
Authors
Jesse L. De La Cruz, Nicholas J. Kalen, Elaine L. Barr, Emily D. Thorne, Alexander Silvis, Richard J. Reynolds, W. Mark Ford
FY 2023 herring disease program annual report FY 2023 herring disease program annual report
No abstract available.
Authors
Paul Hershberger, David James Páez
Surface elevation trends in North Carolina's coastal wetlands Surface elevation trends in North Carolina's coastal wetlands
Coastal wetlands exist in the narrow fringe between uplands and open water and consequently, are uniquely vulnerable to the impacts of sea level rise (SLR). Predictive models suggest that in the coming decades sea level rise will lead to substantial losses of coastal wetland habitat in North Carolina. Empirical measurements of wetland response to SLR are vital for understanding which...
Authors
Robbie Fearn, Cat Bowler, Rick Savage, Pat Donovoan-Bradenburg, Aaron Houran, Reide Corbett, Stu Hamilton, Carolyn Currin, Jenny Davis, Michael Greene, Anna Hilting, Brandon Puckett, Quentin Walker, Justin Ridge, Cayla Cothron, Sarah Spiegler, Marcelo Ardón, Mike Burchell, Nisse Goldberg, Aaron McCall, Eric Soderholm, Christine Voss, Lorie Sutter, Michelle Moorman, Justine Annaliese Neville, Ches Vervaeke