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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

New tools for a growing threat: Co-developed science informs the fight against invasive grasses in the sagebrush biome

New tools for a growing threat: Co-developed science informs the fight against invasive grasses in the sagebrush biome

DOI scientists engage with Southeast Alaska Indigenous Guardians to discuss local sea otter ecology and economics

DOI scientists engage with Southeast Alaska Indigenous Guardians to discuss local sea otter ecology and economics

Science in Service: USGS monitoring sustains a delisted species for the US Navy

Science in Service: USGS monitoring sustains a delisted species for the US Navy

Publications

Monitoring nesting waterbirds for the South Bay Salt Pond Restoration Project—2024 breeding season Monitoring nesting waterbirds for the South Bay Salt Pond Restoration Project—2024 breeding season

The San Francisco Bay supports thousands of breeding waterbirds annually and hosts large populations of American avocets (Recurvirostra americana), black-necked stilts (Himantopus mexicanus), and Forster’s terns (Sterna forsteri). These three species have relied largely on former commercial salt ponds in south San Francisco Bay, which provide wetland foraging habitat and island nesting...
Authors
Joshua T. Ackerman, C. Alex Hartman, Mark P. Herzog

Evaluation of pathogen risks and testing considerations for Chinook salmon egg movements between New Zealand and California Evaluation of pathogen risks and testing considerations for Chinook salmon egg movements between New Zealand and California

Executive Summary Oncorhynchus tshawytscha (Walbaum in Artedi, 1792; Chinook salmon) were historically abundant in the McCloud River but are now extirpated from this tributary owing to dam construction and lack of passage. Planning efforts to restore populations above Shasta and Keswick Dams are currently underway, including an evaluation of potential source populations. One potential...
Authors
Claire E. Couch, David B. Powell, Jan Lovy

RoadxStr user’s guide—For collection of road-stream crossing assessment field observations RoadxStr user’s guide—For collection of road-stream crossing assessment field observations

Intersections of drainage networks and road networks represent a critical nexus between natural waterways and human infrastructure. Managing these systems involves decisions related to management of infrastructure, hydrologic and geomorphic processes, and ecological connectivity. Interactions among these systems influence multiple values, including the intactness of transportation...
Authors
Emily Heaston, Sean Winter, Shelby Bauer, Tait Ronningen, Jason Dunham

Science

Alaska Science Center Weekly Findings

Alaska Science Center Weekly Findings

Recent findings by USGS Alaska Science Center staff and their collaborators.
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Fish and Aquatic Ecology

Fish and aquatic habitats in Alaska support important commercial, sport, and subsistence fisheries and provide forage fish that support wildlife populations. The USGS Alaska Science Center conducts interdisciplinary research to inform local, state, federal, and international policy makers regarding conservation of fish, aquatic species, and their habitats. We work collaboratively with hydrologists...
Fish and Aquatic Ecology

Fish and Aquatic Ecology

Fish and aquatic habitats in Alaska support important commercial, sport, and subsistence fisheries and provide forage fish that support wildlife populations. The USGS Alaska Science Center conducts interdisciplinary research to inform local, state, federal, and international policy makers regarding conservation of fish, aquatic species, and their habitats. We work collaboratively with hydrologists...
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Chronic Wasting Disease and Cervid Health—2025 Highlights

USGS scientists are advancing surveillance, diagnostics, ecological modeling, and decision-support tools to help wildlife managers respond to Chronic Wasting Disease across North America.
Chronic Wasting Disease and Cervid Health—2025 Highlights

Chronic Wasting Disease and Cervid Health—2025 Highlights

USGS scientists are advancing surveillance, diagnostics, ecological modeling, and decision-support tools to help wildlife managers respond to Chronic Wasting Disease across North America.
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