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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

Ecological benefits and risks of fuel breaks vary across the sagebrush biome

Ecological benefits and risks of fuel breaks vary across the sagebrush biome

Earth Science Matters - Volume 19, Winter 2024

Earth Science Matters - Volume 19, Winter 2024

2024 Year in Review

2024 Year in Review

Publications

Understanding and predicting infection dynamics for an endangered amphibian using long-term surveys of wild and translocated frogs

Amphibians are a prominent component of Earth's sixth mass extinction and the fungal pathogen Batrachochytrium dendrobatidis (Bd) is a primary driver of declines. Although Bd dynamics are well studied, the environmental drivers, exacerbating risk factors, and value of conservation interventions like translocations remain challenging to predict. Here, we present results from two decades...
Authors
Talisin T. Hammond, Adam R. Backlin, Elizabeth Gallegos, Debra M. Shier, Ronald R. Swaisgood, Robert N. Fisher

Parentage and sibship relationships among captive snakes at the Phoenix Zoo—2024 data summary

IntroductionThe narrow-headed gartersnake (Thamnophis rufipunctatus) is listed as threatened under the Endangered Species Act (U.S. Fish and Wildlife Service, 2014). This species has a strong association with aquatic habitats, and these habitats have been highly altered by impoundments, land-use changes, and the introduction and spread of non-native aquatic species, which contributed to...
Authors
Dustin A. Wood, Anna Mitelberg, Amy G. Vandergast

Predictions of elk and chronic wasting disease dynamics at the National Elk Refuge in Jackson, Wyoming, and surrounding areas

The U.S. Fish and Wildlife Service National Elk Refuge (NER) in Jackson, Wyoming, supplementally feeds Cervus elaphus canadensis (elk) and Bison bison (American bison) during winter months, but the costs and benefits of this management strategy are being reevaluated considering the potential effects of chronic wasting disease (CWD) on elk. U.S. Geological Survey scientists worked with...
Authors
Paul C. Cross, Jonathan D. Cook, Eric K. Cole

Science

Sagebrush Keystone Initiative

Encompassing over 175 million acres, America’s “Sagebrush Sea” is the largest terrestrial ecosystem in the lower 48 states. A predominately shrubland system, this landscape ranges over deserts, valleys, mountains, and mesas from the Canadian border to our southwestern deserts. The sagebrush ecosystem – the ancestral homeland of many Tribal Nations – supports critical agricultural and recreation...
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Sagebrush Keystone Initiative

Encompassing over 175 million acres, America’s “Sagebrush Sea” is the largest terrestrial ecosystem in the lower 48 states. A predominately shrubland system, this landscape ranges over deserts, valleys, mountains, and mesas from the Canadian border to our southwestern deserts. The sagebrush ecosystem – the ancestral homeland of many Tribal Nations – supports critical agricultural and recreation...
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USGS at the 2025 Philadelphia Flower Show

USGS returns to the Philadelphia Flower Show in 2025 with an exhibit themed around bees, birds and blooms. We hope to see you in March!
link

USGS at the 2025 Philadelphia Flower Show

USGS returns to the Philadelphia Flower Show in 2025 with an exhibit themed around bees, birds and blooms. We hope to see you in March!
Learn More

Mapping wild horse densities across broad landscapes of the Western United States

Researchers at USGS are using historical wild horse survey and monitoring records to conduct a study of horse density across sagebrush ecosystems of the western United States. Researchers will develop generalized density maps for the species that will enhance concurrent evaluations into the ecological effects of wild horse populations.
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Mapping wild horse densities across broad landscapes of the Western United States

Researchers at USGS are using historical wild horse survey and monitoring records to conduct a study of horse density across sagebrush ecosystems of the western United States. Researchers will develop generalized density maps for the species that will enhance concurrent evaluations into the ecological effects of wild horse populations.
Learn More
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