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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

Causal Analysis of Fire Regime Drivers

Causal Analysis of Fire Regime Drivers

Genetic Diversity is a Key Factor in Climate-Driven Range Shifts

Genetic Diversity is a Key Factor in Climate-Driven Range Shifts

Webinar Series - Fueling Discovery with USGS Wildland Fire Science

Webinar Series - Fueling Discovery with USGS Wildland Fire Science

Publications

Continuous and high-resolution longitudinal profiles of the water surface and riverbed elevation for 282 miles of the Colorado River from Lees Ferry to Pearce Ferry, Arizona, 2021 Continuous and high-resolution longitudinal profiles of the water surface and riverbed elevation for 282 miles of the Colorado River from Lees Ferry to Pearce Ferry, Arizona, 2021

Longitudinal profiles of water surface and riverbed elevations capture key geomorphic characteristics that can be affected by water infrastructure and natural processes. Continuous water surface profiles of the Colorado River in Grand Canyon, a river influenced by two of the largest dams in the United States, have been measured infrequently. The water surface profile was first measured...
Authors
Shannon L. Sartain, Matthew A. Kaplinski, Keith Kohl, Katherine A. Chapman, Nathaniel D. Bransky, Joel B. Sankey, Paul E. Grams

Rearing method has limited effect on post-release movement of reintroduced age-0 Lake Sturgeon Rearing method has limited effect on post-release movement of reintroduced age-0 Lake Sturgeon

Overfishing, habitat loss, and pollution caused the extirpation of Lake Sturgeon (Acipenser fulvescens) throughout much of the Great Lakes. A Lake Sturgeon reintroduction program using two rearing strategies began in 2018 in the Maumee River, a tributary of Lake Erie. We assessed the movement of streamside or traditionally reared age-0 Lake Sturgeon using acoustic telemetry to determine...
Authors
Jorden R. McKenna, Justin A. Chiotti, Christopher S. Vandergoot, Richard Kraus, Matthew D. Faust, Zak J. Slagle, Eric J. Weimer, Matthew D. Cross, William D. Hintz

Ecology of reintroduced Rocky Mountain bighorn sheep in Dinosaur National Monument Ecology of reintroduced Rocky Mountain bighorn sheep in Dinosaur National Monument

Translocations have been widely used to restore and conserve bighorn sheep (Ovis canadensis) populations in North America. Some translocations have been successful, but many populations remain small and genetically isolated. Population structure can influence the viability and long-term success of reintroductions. Social ungulates often function as interconnected subpopulations...
Authors
Sarah Louise Carroll, Elizabeth P Flesch, Salix Scoresby, Emily Spencer, Rachel S. Crowhurst, Clinton W. Epps, Nathan L. Galloway, William Michael Janousek, Tabitha A. Graves

Science

Beyond Microcystins: A New Look at Cyanotoxins in Lake Erie

Cyanobacterial harmful algal blooms (cyanoHABs) in Lake Erie’s western basin have long been associated with microcystins, a well-known group of liver toxins. However, new research shows that these blooms are far more chemically diverse than previously thought. A seven-year study using advanced chemical and genetic tools reveals that cyanobacteria produce a succession of different chemical...
Beyond Microcystins: A New Look at Cyanotoxins in Lake Erie

Beyond Microcystins: A New Look at Cyanotoxins in Lake Erie

Cyanobacterial harmful algal blooms (cyanoHABs) in Lake Erie’s western basin have long been associated with microcystins, a well-known group of liver toxins. However, new research shows that these blooms are far more chemically diverse than previously thought. A seven-year study using advanced chemical and genetic tools reveals that cyanobacteria produce a succession of different chemical...
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Using Artificial Intelligence to Estimate Traffic to Improve Planning and Access to Colorado’s Public Lands

This project applies data-driven, machine‑learning methods to estimate average annual daily traffic on roads that connect people to Colorado’s public lands, where traffic data are sparse or nonexistent. Expanding on successful applications in Wyoming, the approach uses socioeconomic, land-use, roadway, and accessibility data to uniquely model traffic patterns from 2015 to 2025. These predictions...
Using Artificial Intelligence to Estimate Traffic to Improve Planning and Access to Colorado’s Public Lands

Using Artificial Intelligence to Estimate Traffic to Improve Planning and Access to Colorado’s Public Lands

This project applies data-driven, machine‑learning methods to estimate average annual daily traffic on roads that connect people to Colorado’s public lands, where traffic data are sparse or nonexistent. Expanding on successful applications in Wyoming, the approach uses socioeconomic, land-use, roadway, and accessibility data to uniquely model traffic patterns from 2015 to 2025. These predictions...
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Colonial Nesting Waterbird Ecology

USGS is engaged in a variety of research aimed at understanding population dynamics in colonially nesting waterbirds of the Chesapeake Bay. Much of this work focuses on how focal species such as Common and Least Terns, Cattle and Snowy Egrets, and others respond to habitat restoration and management on Poplar Island, a large-scale effort lead by the U.S. Army Corps of Engineers and the Port of...
Colonial Nesting Waterbird Ecology

Colonial Nesting Waterbird Ecology

USGS is engaged in a variety of research aimed at understanding population dynamics in colonially nesting waterbirds of the Chesapeake Bay. Much of this work focuses on how focal species such as Common and Least Terns, Cattle and Snowy Egrets, and others respond to habitat restoration and management on Poplar Island, a large-scale effort lead by the U.S. Army Corps of Engineers and the Port of...
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