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Browse more than 82,000 reports 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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Louisiana black bear monitoring report Louisiana black bear monitoring report

No abstract available.
Authors
Joseph D. Clark, John Hanks
By
Ecosystems Mission Area, Northern Rocky Mountain Science Center

Black abalone (Haliotis cracherodii) population density, recruitment, size structure, and population growth at Naval Base Ventura County, San Nicolas Island, California, 2013–22 Black abalone (Haliotis cracherodii) population density, recruitment, size structure, and population growth at Naval Base Ventura County, San Nicolas Island, California, 2013–22

The range of the endangered black abalone (Haliotis cracherodii) is divided into the North Central California region, the Central California region, the Southern California Mainland region, the Channel Islands region, and the Baja California region by the National Marine Fisheries Service for management purposes. San Nicolas Island is one of eight subregions of the Channel Islands region...
Authors
Michael C. Kenner, Julie L. Yee
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)

Black abalone surveys at Naval Base Ventura County, San Nicolas Island, California—2022 annual report Black abalone surveys at Naval Base Ventura County, San Nicolas Island, California—2022 annual report

The U.S. Geological Survey monitors a suite of intertidal black abalone (Haliotis cracherodii) sites at San Nicolas Island, California, in cooperation with the U.S. Navy, which owns the island. The nine rocky intertidal sites were established in 1980 to study the potential effect of translocated southern sea otters (Enhydra lutris nereis) on the intertidal black abalone population at San...
Authors
Michael C. Kenner, Julie L. Yee
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)

Cascading consequences and interventions for hazards after wildfire in Okanogan County, Washington Cascading consequences and interventions for hazards after wildfire in Okanogan County, Washington

This report details the application of the chains of consequences method within the postfire hazard context after the 2021 Cedar Creek and Muckamuck Fires around Okanogan County, Washington. The U.S. Geological Survey Social and Economic Analysis branch convened 20 stakeholders with content- and context-specific knowledge related to these fires and their postfire hazards in an April 2023...
Authors
Briar H. Goldwyn, James R. Meldrum, Rudy Schuster
By
Ecosystems Mission Area, Fort Collins Science Center

U.S. Geological Survey Pollinator Science Strategy, 2025–35—A Review and Look Forward U.S. Geological Survey Pollinator Science Strategy, 2025–35—A Review and Look Forward

This “U.S. Geological Survey Pollinator Science Strategy, 2025–35—A Review and Look Forward” (“Pollinator Science Strategy”) describes the science vision of the U.S. Geological Survey (USGS) to support management, conservation, and policy decisions on animal pollinators and their habitats. As the science arm of the Department of the Interior, the USGS has a primary role in providing...
Authors
Clint Otto, Tabitha A. Graves, Desi Robertson-Thompson, Ian S. Pearse, Wayne E. Thogmartin, Caroline E. Murphy, Elisabeth B. Webb, Sam Droege, Melanie J. Steinkamp, Ralph Grundel
By
Ecosystems Mission Area, Cooperative Research Units, Species Management Research Program, Eastern Ecological Science Center, Fort Collins Science Center, Great Lakes Science Center, Northern Prairie Wildlife Research Center, Northern Rocky Mountain Science Center, Upper Midwest Environmental Sciences Center, National Geospatial Technical Operations Center

U.S. Geological Survey science strategy to address highly pathogenic avian influenza and its effects on wildlife health 2025–29 U.S. Geological Survey science strategy to address highly pathogenic avian influenza and its effects on wildlife health 2025–29

Executive Summary Highly pathogenic avian influenza (HPAI) is an ecologically and economically important animal disease that can also directly affect humans (a “zoonotic” disease). HPAI was once limited almost exclusively to domestic poultry but has rapidly adapted to diverse animal hosts. Viruses causing HPAI now appear to be maintained and dispersed by wild birds largely independent of...
Authors
Andrew M. Ramey, Diann J. Prosser, Laura E. Hubbard, Guelaguetza Vazquez-Meves, Amy George, M. Camille Hopkins
By
Ecosystems Mission Area, Alaska Science Center, Columbia Environmental Research Center, Eastern Ecological Science Center, Upper Midwest Water Science Center, Molecular Ecology Laboratory
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