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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

USGS PCMSC-PICASC Tour Engages Local Hawaiian Communities About Deep-Sea Research

USGS PCMSC-PICASC Tour Engages Local Hawaiian Communities About Deep-Sea Research

Navigating the Climate Adaptation Toolkit

Navigating the Climate Adaptation Toolkit

Congratulations to Chris Pullano for Winning this Issue's Photo Contest!

Congratulations to Chris Pullano for Winning this Issue's Photo Contest!

Publications

Assessment of dragonfly and damselfly (Odonata) occupancy and habitat suitability at −12 Mile Slough, Glen Canyon National Recreation Area, Arizona Assessment of dragonfly and damselfly (Odonata) occupancy and habitat suitability at −12 Mile Slough, Glen Canyon National Recreation Area, Arizona

Management practices that enhance habitat complexity in dam tailwaters often aim to increase biodiversity and improve ecosystem health. However, in other instances, management practices may simplify habitat features to help minimize the establishment of invasive species. These tradeoffs are complex, particularly in the face of drought and warming water temperatures. In Glen Canyon...
Authors
Anya Metcalfe, Morgan Ford, Lawrence Stevens, Theodore Kennedy

Rapid structured decision making for Hypomesus transpacificus (delta smelt) summer–fall freshwater outflow management Rapid structured decision making for Hypomesus transpacificus (delta smelt) summer–fall freshwater outflow management

Managers of the Central Valley Project (CVP) and State Water Projects (SWP) in California are confronted with difficult tradeoffs between water uses and associated values affected by water management decisions. These decisions involve altering the timing and magnitude of water releases from dams and reservoirs, which can affect habitats for economically important and Federally and State...
Authors
Brian Healy, Corey Phillis, Brian Mahardja, Cameron Koizumi, Catarina Pien, Nancy Parker, J. Conrad, Julie Ekstrom, Julie Leimbach, Rafael Silberblatt, Tom Fischer, Chase Ehlo

A summary of grizzly bear distribution in the lower-48 US states in 2024 A summary of grizzly bear distribution in the lower-48 US states in 2024

Understanding the distribution of grizzly bear populations in the lower-48 states, is important for their conservation and management, and for public safety. Previously, our research teams working in grizzly bear ecosystems in the lower-48 states used varying methods to estimate distribution of grizzly bear populations. In the Greater Yellowstone Ecosystem (GYE) and Northern Continental...
Authors
Cecily Costello, Justin Dellinger, Jennifer Fortin-Noreus, Mark Haroldson, Bryn Karabensh, Wayne Kasworm, Lori Roberts, Justin Teisberg, Frank van Manen, Tyler Vent

Science

Harmful Algal Bloom Toxins in Alaska Seabirds

Elevated ocean temperatures are linked to the development of harmful algal blooms (HABs). Toxins from these blooms may pose health threats to marine organisms, including seabirds. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems...
Harmful Algal Bloom Toxins in Alaska Seabirds

Harmful Algal Bloom Toxins in Alaska Seabirds

Elevated ocean temperatures are linked to the development of harmful algal blooms (HABs). Toxins from these blooms may pose health threats to marine organisms, including seabirds. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems...
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Invasive Burmese python research in the Greater Everglades

USGS leads federal research to control the highly invasive Burmese python ( Python bivittatus), which has become firmly established across the Greater Everglades Ecosystem and poses a serious threat to native wildlife. Capable of reaching over 17 feet long, this massive constrictor is believed to be a key factor in the sharp decline of mammal populations in the region. For over a decade...
Invasive Burmese python research in the Greater Everglades

Invasive Burmese python research in the Greater Everglades

USGS leads federal research to control the highly invasive Burmese python ( Python bivittatus), which has become firmly established across the Greater Everglades Ecosystem and poses a serious threat to native wildlife. Capable of reaching over 17 feet long, this massive constrictor is believed to be a key factor in the sharp decline of mammal populations in the region. For over a decade...
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Recommendations for conducting landscape assessments to inform decision making on multiple-use public lands

Landscape assessments have been proposed as a mechanism for informing conservation and natural resource management actions at broad scales. We are documenting the process used in a large effort to conduct 14 such assessments across the western United States, and evaluating how the assessments were used in subsequent land use plans. In this project, we seek to identify methods and characteristics...
Recommendations for conducting landscape assessments to inform decision making on multiple-use public lands

Recommendations for conducting landscape assessments to inform decision making on multiple-use public lands

Landscape assessments have been proposed as a mechanism for informing conservation and natural resource management actions at broad scales. We are documenting the process used in a large effort to conduct 14 such assessments across the western United States, and evaluating how the assessments were used in subsequent land use plans. In this project, we seek to identify methods and characteristics...
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