Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41894
Virulence and infectivity of UC, MD and L strains of infectious hematopoietic necrosis virus (IHNV) in four populations of Columbia River Basin Chinook salmon
Infectious Hematopoietic Necrosis Virus (IHNV) infects juvenile salmonid fish in conservation hatcheries and aquaculture facilities, and in some cases, causes lethal disease. This study assesses intra-specific variation in the IHNV susceptibility of Chinook salmon (Oncorhynchus tshawytscha) in the Columbia River Basin (CRB), in the northwestern United States. The virulence and infectivity of IHNV
Authors
Daniel G. Hernandez, William E. Brown, Kerry A. Naish, Gael Kurath
Long‐term surveys support declines in early‐season forest plants used by bumblebees
Populations of bumble bees and other pollinators have declined over the past several decades due to numerous threats, including habitat loss and degradation. However, we can rarely investigate the role of resource loss due to a lack of detailed long‐term records of forage plants and habitats.We use 22‐year repeated surveys of more than 262 sites located in grassland, forest, and wetland habitats a
Authors
John Michael Mola, Leif L Richardson, Greg Spyreas, David N. Zaya, Ian Pearse
Evaluation of remote site incubators to incubate wild- and hatchery-origin Westslope Cutthroat Trout embryos
Fish managers must weigh trade-offs among cost, speed, efficiency, and ecological adaptation when deciding how to translocate native salmonids to either establish or genetically augment populations. Remote site incubators (RSIs) appear to be a reasonable strategy, but large-scale evaluations of this method have been limited. We used 129 RSIs to incubate >35,700 eyed embryos of Westslope Cutthroat
Authors
Bradley B. Shepard, Patrick Clancey, Lee M. Nelson, Carter Kruse, Robert K. Al-Chokhachy, Daniel Drinan, Alexander V. Zale
Integrating tracking and resight data enables unbiased inferences about migratory connectivity and winter range survival from archival tags
Archival geolocators have transformed the study of small, migratory organisms but analysis of data from these devices requires bias correction because tags are only recovered from individuals that survive and are re-captured at their tagging location. We show that integrating geolocator recovery data and mark–resight data enables unbiased estimates of both migratory connectivity between breeding a
Authors
Clark S Rushing, Aimee M Van Tatenhove, Andrew Sharp, Viviana Ruiz-Gutierrez, Mary Freeman, Paul W. Jr Sykes, Aaron M. Given, T. Scott Sillett
Landscape characterization of floral resources for pollinators in the Prairie Pothole Region of the United States
Across agricultural areas of the Prairie Pothole Region (PPR), floral resources are primarily found on public grasslands, roadsides, and private grasslands used as pasture or enrolled in federal conservation programs. Little research has characterized the availability of flowers across the region or identified the primary stakeholders managing lands supporting pollinators. We explored spatial and
Authors
Autumn H. Smart, Clint R.V. Otto, Alisa L. Gallant, Michael P. Simanonok
Connectivity of Mojave Desert tortoise populations—Management implications for maintaining a viable recovery network
Executive SummaryThe historic distribution of Mojave desert tortoises (Gopherus agassizii) was relatively continuous across the range, and the importance of tortoise habitat outside of designated tortoise conservation areas (TCAs) to recovery has long been recognized for its contributions to supporting gene flow between TCAs and to minimizing impacts and edge effects within TCAs. However, connecti
Authors
Roy C. Averill-Murray, Todd C. Esque, Linda J. Allison, Scott Bassett, Sarah K. Carter, Kirsten E. Dutcher, Steven J. Hromada, Kevin T. Shoemaker, Kenneth E. Nussear
Long-term multidecadal data from a prairie-pothole wetland complex reveal controls on aquatic-macroinvertebrate communities
Interactions between climate and hydrogeologic settings contribute to the hydrologic and chemical variability among depressional wetlands, which influences their aquatic communities. These interactions and resulting variability have led to inconsistent results in terms of identifying reliable predictors of aquatic-macroinvertebrate community composition for depressional wetlands. This is especiall
Authors
Kyle McLean, David M. Mushet, Wesley E. Newton, Jon N. Sweetman
Surface material and snout-vent length predict vertical scaling ability in brown treesnakes:an evaluation of multispecies barriers for invasive species control on Guam
The combination of snake-proof barriers and an aerial toxicant delivery system for snake suppression may allow large-scale control of invasive brown treesnakes (Boiga irregularis) on Guam. However, suppression or local eradication of several other species (e.g., introduced ungulates, cats, rodents) may be required for successful restoration and recovery of forest habitat and reintroduction of nati
Authors
Eric T. Hileman, DR Bradke, Melia G. Nafus, Amy A. Yackel Adams, Robert Reed
Emerging investigator series: Municipal wastewater as a year-round point source of neonicotinoid insecticides that persist in an effluent-dominated stream
Neonicotinoids in aquatic systems have been predominantly associated with agriculture, but some are increasingly being linked to municipal wastewater. Thus, the aim of this work was to understand the municipal wastewater contribution to neonicotinoids in a representative, characterized effluent-dominated temperate-region stream. Our approach was to quantify the spatiotemporal concentrations of imi
Authors
Danielle T. Webb, Hui Zhi, Dana W. Kolpin, Rebecca D. Klaper, Luke R. Iwanowicz, Gregory H. LeFevre
A review of spatially resolved techniques and applications of organic petrography in shale petroleum systems
This review examines new techniques and applications of organic petrography in source-rock reservoir petroleum systems that have occurred along with development of the global ‘shale revolution’ in energy resources. The review is limited to techniques and instrumentation that provide spatially resolved information, typically at or below microscales, for dispersed organic matter occurring in situ in
Authors
Paul C. Hackley, Aaron M. Jubb, Ryan J. McAleer, Brett J. Valentine, Justin E. Birdwell
Red-throated loon (Gavia stellata) use of nearshore marine habitats—Results from a 2019 pilot study in northern Alaska
Red-throated loons (Gavia stellata) are a species of conservation concern in Alaska due to recent evidence of a population decline on the Arctic Coastal Plain (ACP) in northern Alaska. In 2019, the U.S. Geological Survey and the U.S. Fish and Wildlife Service conducted a pilot study to evaluate diet and use of nearshore foraging areas as possible drivers of the population decline. We collected fat
Authors
Brian D. Uher-Koch, Christopher J. Latty, Joel A. Schmutz
Implications of tagging effects for interpreting the performance of sea lamprey traps in a large river
Abundance estimates can be crucial for managing species of economic concern. The accuracy of these estimates can depend on the methods used to track animals and to estimate abundance from tracking data. We tested experimentally if disparate estimates of trapping efficiency calculated for sea lamprey (Petromyzon marinus) in the St. Marys River near Sault Ste. Marie, Canada could be explained by eff
Authors
Jessica Nelson, Andrew M. Rous, Adrienne R. McLean, Jessica Barber, Gale A Bravener, Christopher Holbrook, Robert L. McLaughlin