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Ecosystems Mission Area

The USGS Ecosystems Mission Area provides science that directly benefits the health, safety, and prosperity of the American people by providing trusted and timely information to help address the Nation’s toughest management and conservation issues impacting public lands and the surrounding communities that benefit from them. 

News

Exclusive: Artificial Light and Salmon

Exclusive: Artificial Light and Salmon

FORT Updates: From Plains to Peaks - Vol. 4 | Issue 3

FORT Updates: From Plains to Peaks - Vol. 4 | Issue 3

FORT Science in Action 2026, Part 18: Ecological research supporting wild horse and burro management

FORT Science in Action 2026, Part 18: Ecological research supporting wild horse and burro management

Publications

Diet and trophic ecology of invasive Blue Catfish Ictalurus furcatus in an eastern shore tributary of the Chesapeake Bay Diet and trophic ecology of invasive Blue Catfish Ictalurus furcatus in an eastern shore tributary of the Chesapeake Bay

Blue Catfish Ictalurus furcatus were first introduced to Virginia tributaries of the Chesapeake Bay in the 1970s and have greatly expanded in population size and distribution, prompting ecological and economic concerns. This study investigates the diet and trophic ecology of invasive Blue Catfish in tidal, low-salinity reaches of the Nanticoke River and Marshyhope Creek, on the...
Authors
Zachary Crum, Clayton D. Raines, Christine Densmore, Regina Trott, Rodney T. Richardson, Christina Bradley, Corbin David Hilling, Noah R. Bressman

Characterization of the native freshwater mussel assemblage across a reach of the Rappahannock River, Virginia Characterization of the native freshwater mussel assemblage across a reach of the Rappahannock River, Virginia

Native freshwater mussels occur in rivers of all sizes, yet much of the literature focuses on small- to medium-sized rivers, likely because of logistic challenges of sampling deep, fast, and turbid large rivers. As large-river surveys become more common, the information resulting from a systematic sampling design can provide baseline data on population sizes to inform decision making by...
Authors
Traci P. DuBose, Jason J. Rohweder, Catherine M Gatenby, Brian Watson, Teresa J. Newton

Range-wide population trend analysis for greater sage-grouse (Centrocercus urophasianus)—Updated 1960–2025 Range-wide population trend analysis for greater sage-grouse (Centrocercus urophasianus)—Updated 1960–2025

Greater sage-grouse (Centrocercus urophasianus; hereafter sage-grouse) are at the center of State and national land-use policies largely because of their unique life-history traits as an ecological indicator for the health of sagebrush ecosystems. This updated population analysis provides State and Federal land and wildlife managers with the best available science to help guide...
Authors
Brian G. Prochazka, Peter S. Coates, Cameron L. Aldridge, Michael S. O’Donnell, Adrian P. Monroe, Steve E. Hanser, John C. Tull, Lief A. Wiechman, Michael P. Chenaille, Michael T. Atamian, Kathy A. Griffin, Heather F. Harris, Jesse L. Kolar, Katherine S. Miller, Michael A. Schroeder, Justin R. Small, Alex J. Solem, Jennifer L. Struthers, Heather L. Talley, Skyler T. Vold

Science

Data Harmonization for Greater Sage-Grouse Populations

Long-term wildlife monitoring is imperative for understanding population changes that can inform managers. However, working with population data collected by different organizations across multiple jurisdictions and over long time periods can be challenging due to varying data management approaches and organizational priorities. Through this project, we aimed to collaborate with eleven state...
Data Harmonization for Greater Sage-Grouse Populations

Data Harmonization for Greater Sage-Grouse Populations

Long-term wildlife monitoring is imperative for understanding population changes that can inform managers. However, working with population data collected by different organizations across multiple jurisdictions and over long time periods can be challenging due to varying data management approaches and organizational priorities. Through this project, we aimed to collaborate with eleven state...
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Actionable science for managing public lands

Our team of biologists, ecologists, and social scientists focuses on coproducing actionable science products to support natural resource planning and management. Broadly, our research involves working to better understand and bridge the research-management gap through a variety of mechanisms, including coproduction and relationship-building, science synthesis and summary, and identification of...
Actionable science for managing public lands

Actionable science for managing public lands

Our team of biologists, ecologists, and social scientists focuses on coproducing actionable science products to support natural resource planning and management. Broadly, our research involves working to better understand and bridge the research-management gap through a variety of mechanisms, including coproduction and relationship-building, science synthesis and summary, and identification of...
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Alaska Landbird Monitoring Survey

Alaska provides breeding habitat for more than 140 regularly occurring species of landbirds, half of which breed predominantly north of the U.S.–Canada border. The road-based North American Breeding Bird Survey (BBS) provides some data on population trends in Alaska, but most northern species are inadequately monitored by that continental program because of a paucity of roads. Boreal Partners in...
Alaska Landbird Monitoring Survey

Alaska Landbird Monitoring Survey

Alaska provides breeding habitat for more than 140 regularly occurring species of landbirds, half of which breed predominantly north of the U.S.–Canada border. The road-based North American Breeding Bird Survey (BBS) provides some data on population trends in Alaska, but most northern species are inadequately monitored by that continental program because of a paucity of roads. Boreal Partners in...
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