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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

As Midwestern Lakes Warm, Fish Face Asymmetrical Impacts

As Midwestern Lakes Warm, Fish Face Asymmetrical Impacts

Sixty-seven years and still digging! A brief history of the USGS Benchmark Glacier Project

Sixty-seven years and still digging! A brief history of the USGS Benchmark Glacier Project

Explore forty-two years of field notes from the Loch Vale watershed, Rocky Mountain National Park

Explore forty-two years of field notes from the Loch Vale watershed, Rocky Mountain National Park

Publications

Potential effects of chronic wasting disease and supplemental feeding on elk populations in Wyoming

IntroductionIn 2023, the U.S. Geological Survey, in collaboration with the U.S. Department of Agriculture Forest Service and the U.S. Fish and Wildlife Service, evaluated the costs and benefits of supplemental elk (Cervus elaphus canadensis) feeding in western Wyoming. Elk supplemental feeding is intended to maintain elk populations in the winter and limit elk damage to private property. Supplemen
Authors
Paul C. Cross, Todd G. Wojtowicz

Evaluating a simulation-based wildfire burn probability map for the conterminous US

BackgroundWildfire simulation models are used to derive maps of burn probability (BP) based on fuels, weather, topography and ignition locations, and BP maps are key components of wildfire risk assessments.AimsFew studies have compared BP maps with real-world fires to evaluate their suitability for near-future risk assessment. Here, we evaluated a BP map for the conterminous US based on the large
Authors
Amanda Renee Carlson, Todd Hawbaker, Lucas Bair, Chad Michael Hoffman, James Meldrum, L. Scott Baggett, Paul F. Steblein

Dynamic treeline and cryosphere response to pronounced mid-Holocene climatic variability in the US Rocky Mountains

Climate-driven changes in high-elevation forest distribution and reductions in snow and ice cover have major implications for ecosystems and global water security. In the Greater Yellowstone Ecosystem of the Rocky Mountains (United States), recent melting of a high-elevation (3,091 m asl) ice patch exposed a mature stand of whitebark pine (Pinus albicaulis) trees, located ~180 m in elevation above
Authors
Gregory T. Pederson, Daniel Stahle, David B McWethy, Matthew Toohey, Johann Jungclaus, Craig Lee, Justin Martin, Mio Alt, Nickolas E. Kichas, Nathan J. Chellman, Joseph R. McConnell, Cathy Whitlock

Science

Chronic Wasting Disease

Chronic wasting disease (CWD) affects cervids (elk, moose, mule deer, and white-tailed deer) throughout the U.S. CWD affects the nervous system in these animals and creates distinctive brain lesions. At this time, we have no treatment for CWD and it is fatal to the animals who contract it. CWD is caused by an infectious, irregular form of cellular prion protein. CWD can be directly and indirectly...
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Chronic Wasting Disease

Chronic wasting disease (CWD) affects cervids (elk, moose, mule deer, and white-tailed deer) throughout the U.S. CWD affects the nervous system in these animals and creates distinctive brain lesions. At this time, we have no treatment for CWD and it is fatal to the animals who contract it. CWD is caused by an infectious, irregular form of cellular prion protein. CWD can be directly and indirectly...
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Fish & Wildlife Disease: Avian Disease

Since 2006, we have partnered with agencies around the world to monitor the spread of highly pathogenic (HPAI) avian influenza. In 2014, our scientists detected three HPAI viruses for the first time in wild birds in North America: H5N2, H5N8, and a recombinant H5N1. In response to HPAI detections, our scientists are working closely with the U.S. Department of Agriculture and other Federal and...
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Fish & Wildlife Disease: Avian Disease

Since 2006, we have partnered with agencies around the world to monitor the spread of highly pathogenic (HPAI) avian influenza. In 2014, our scientists detected three HPAI viruses for the first time in wild birds in North America: H5N2, H5N8, and a recombinant H5N1. In response to HPAI detections, our scientists are working closely with the U.S. Department of Agriculture and other Federal and...
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Blue Catfish | Invasive Species We Study

Blue Catfish ( Ictalurus furcatus ) is native to the lower and middle Mississippi River and its tributaries and to the Rio Grande River. Many states outside of the native range stocked Blue Catfish to provide angling opportunities and to meet other fishery management objectives as early as the early 1900s. In the Chesapeake Bay watershed and in some eastern seaboard states, Blue Catfish is an...
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Blue Catfish | Invasive Species We Study

Blue Catfish ( Ictalurus furcatus ) is native to the lower and middle Mississippi River and its tributaries and to the Rio Grande River. Many states outside of the native range stocked Blue Catfish to provide angling opportunities and to meet other fishery management objectives as early as the early 1900s. In the Chesapeake Bay watershed and in some eastern seaboard states, Blue Catfish is an...
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