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How our Program Works

We're working on this page! Check back soon — last updated September 15, 2025.

Our mission has three directives: (1) conduct research to deliver actionable science to cooperating agencies and organizations; (2) develop the natural resource conservation workforce of the future through graduate educa­tion; and (3) fulfill the training and technical assistance needs of cooperators. 

Staffing
The recent budget increases allowed the CRU to actively fill positions over the past 2 years, with 37 new scientists brought onboard (26 in FY21 and 11 in FY22). However, 27 vacancies remained at the end of the FY22 owing to the loss of 14 scientists (retirements, resignations, death) over the past 2 years, and the addition of 6 new positions at the new units. Hiring actions have been initiated to fill another nine positions, including Unit Leader positions at the new Nevada, Michigan, and Indiana Units.

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Fishing off rock

Operational Support
The recent budget increases provided needed operational support to the CRUs, with respect to capital investments for items such as vehicles and safety equipment. This significant financial commitment has been lacking in recent years as a result of an extended period of flat funding during government budget sequestration (2013–18) that resulted in little to no financial support for operational investments. Consequently, operational equipment such as the vehicle fleet continued to age without replacement and the vehicles are now approaching the end of their serviceable life. Under the scenario with 30+ vacancies, the units could be operational with the existing vehicle fleet because demand was down. However, with 37 new scientists recently brought into the program and 27 more yet to come, a significant investment is needed in operational items, such as vehicles, watercraft, all-terrain vehicles, utility terrain vehicles, along with laboratory and safety equipment to support the active and growing field research programs of potentially 60+ new scientists.

 

 

Leveraging Resources and Creating Jobs

The CRU program maximizes taxpayer investment, turning every appropriated Federal dollar into three dollars by CRU scientists, who leverage additional funding and support for the CRU program. Leveraged funding is administered through host university’s budgetary processes to support each Unit’s research program, to provide training to students, and to help cooperators and stakeholders. On average, the leveraged funding streams from CRU scientists generate support for as many as 31 non-Federal positions at each host university per year, including graduate students, postdoctoral researchers, and research technicians. Leveraged funding at host universities supports over 1,100 jobs, providing real economic benefits to local communities. Cooperating universities also provided an additional \$22 million of in-kind support through facilities, student tuition, and reduced overhead.

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Goose Lake redband trout

Research Priorities

Following the original legislation that created the CRU program (Public Law 86–686), all research priorities are set locally at each unit in consultation with Federal and State cooperators. Unit scientists and unit supervisors work with cooperators to help them identify their needs, and unit supervi­sors ensure that all research conducted is aligned with the USGS mission. Unit scientists, associated faculty, staff and students regularly conduct research projects in coordination with, and to meet the needs of, USGS headquarters, regions, and science centers. See the Notes from the Field section for examples of collaborative work with science centers, States, non-government organizations (NGOs), and other Federal cooperators. Final approval for each project is made by CRU headquarters management (Chief or Deputy Chief) to ensure that projects meet the USGS mission and the Department of Interior (DOI) priorities.

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Collared mule deer

Project Controls

Research Work Orders (RWOs) are the mechanism through which host universities receive Federal financial support to conduct research, as provided for in the 1978 amendment to Public Law 86–686. RWOs are an extension of the Cooperative Agreement establishing each unit. Funds from the USGS, other DOI bureaus, or other Federal agencies are obligated via financial assistance into a RWO and awarded to the host university for a specific research project.

The Deputy Chief ensures that the project meets the require­ments for a RWO, including the following (1) the project must be novel research; (2) the project must be consistent with the mission of the USGS and DOI priorities; (3) the project must have an educational component; (4) the budget is complete and appropri­ate; and (5) no apparent conflicts of interest exist.

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mallard duck with yellow bill, green head, and grey black feathers, on water

Regional Engagement and Coordination

CRU headquarters staff and leadership work closely with key regional partners, including USGS Center Directors, USGS Regional Directors, USGS Ecosystems Mission Area leadership, as well as leadership from other agencies, such as the USFWS. The Chief of the CRU program works closely with USGS Center Directors and USGS Regional Directors on topics of mutual inter­est. For example, the development of an interagency pollinator science laboratory that engages regional staff, center scientists, and external partners (such as, USFWS, U.S. Department of Agri­culture [USDA], the Northeast Association of Fish and Wildlife Agencies, National Park Service [NPS], and the Smithsonian Institution) in research to inform pollinator conservation activities at State and Federal agencies.

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Image: Transporting a Captured Mule Deer

Success in Applied Research

Scientists, research staff, and students in the CRU program were highly productive, publishing 360 scientific papers in FY 2024 related to partner-identified natural resource problems. These papers were published in over 130 peer-reviewed journals, ranging from international journals, such as “Nature,” to regional journals, such as “Southwestern Naturalist.” Unit scientists published mostly in journals supported by professional societies such as the Wildlife Society and the American Fisheries Society. Unit scientists provide insight and guidance regarding conservation challenges and help inform decision-making by resource managers at State, regional, and national levels. Unit scientists directed over 700 research projects during FY 2024. To address agency needs, cooperators determined topical science themes of FY 2024 research projects, such as Hunting and Fishing Resources, Animal Migration and Movements, Invasive Species and Fish and Wildlife Disease, and Federal, State, and Local Decision-making Strategies

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Graduate students electrofishing on Deer Creek in Nebraska

Staff Profiles

Filter Total Items: 142

Lisa Webb, PhD

Science

Filter Total Items: 86

Effects of sucker gigging on fish populations in Oklahoma scenic rivers

USGS researchers at the Georgia Cooperative Fish and Wildlife Research Unit are sampling suckers using electrofishing, fyke netting, gillnetting, hoop netting, and seining and marking the suckers with passive integrated transponder tags to provide information about population size, demographics, and movement patterns. Suckers (Catostomidae) are ecologically important, and some support popular...
Effects of sucker gigging on fish populations in Oklahoma scenic rivers

Effects of sucker gigging on fish populations in Oklahoma scenic rivers

USGS researchers at the Georgia Cooperative Fish and Wildlife Research Unit are sampling suckers using electrofishing, fyke netting, gillnetting, hoop netting, and seining and marking the suckers with passive integrated transponder tags to provide information about population size, demographics, and movement patterns. Suckers (Catostomidae) are ecologically important, and some support popular...
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Grizzly Bear Research at the Montana Wildlife CRU

Sarah Sells ssells@usgs.gov received her BS from Oregon State University and MS and PhD from the University of Montana. She was a postdoctoral research scientist before joining the Montana Cooperative Wildlife Research Unit in 2022. Dr. Sells is a basic and applied ecologist with expertise in animal behavior, spatial ecology, quantitative analyses, agency collaboration, and decision analysis. Her...
Grizzly Bear Research at the Montana Wildlife CRU

Grizzly Bear Research at the Montana Wildlife CRU

Sarah Sells ssells@usgs.gov received her BS from Oregon State University and MS and PhD from the University of Montana. She was a postdoctoral research scientist before joining the Montana Cooperative Wildlife Research Unit in 2022. Dr. Sells is a basic and applied ecologist with expertise in animal behavior, spatial ecology, quantitative analyses, agency collaboration, and decision analysis. Her...
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The factors affecting female black bear harvest rates in Pennsylvania

USGS researchers at the Oklahoma Cooperative Fish and Wildlife Research Unit are researching black bears in Pennsylvania. Pennsylvania’s black bear (Ursus americanus) population increased in abundance and distribution during the latter third of the 20th century, leading to an increase in human-bear conflicts. Increases in harvest opportunities from 2002–2018 aimed to stabilize black bear...
The factors affecting female black bear harvest rates in Pennsylvania

The factors affecting female black bear harvest rates in Pennsylvania

USGS researchers at the Oklahoma Cooperative Fish and Wildlife Research Unit are researching black bears in Pennsylvania. Pennsylvania’s black bear (Ursus americanus) population increased in abundance and distribution during the latter third of the 20th century, leading to an increase in human-bear conflicts. Increases in harvest opportunities from 2002–2018 aimed to stabilize black bear...
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Watershed selection to support freshwater mussel restoration: an open-loop decision guide

USGS researchers at the Massachusetts Cooperative Fish and Wildlife Research Unit are using an open-loop decision guide to help practitioners when selecting potential watersheds for population restoration. The questions follow an open-loop process in a ‘yes’ or ‘no’ format, whereby the options are to either proceed to the next question if the disturbance in question is negligible to mussel...
Watershed selection to support freshwater mussel restoration: an open-loop decision guide

Watershed selection to support freshwater mussel restoration: an open-loop decision guide

USGS researchers at the Massachusetts Cooperative Fish and Wildlife Research Unit are using an open-loop decision guide to help practitioners when selecting potential watersheds for population restoration. The questions follow an open-loop process in a ‘yes’ or ‘no’ format, whereby the options are to either proceed to the next question if the disturbance in question is negligible to mussel...
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Hurricane Portfolio

Research conducted as part of the CRU program is determined, approved, and supported by each unit’s coordinating committee composed of representatives from the USGS, one or more of the respective State fish and wildlife agencies, the host university, the Wildlife Management Institute, and the USFWS. The stakeholder-driven nature of the program’s research portfolio is designed to ensure that the...
Hurricane Portfolio

Hurricane Portfolio

Research conducted as part of the CRU program is determined, approved, and supported by each unit’s coordinating committee composed of representatives from the USGS, one or more of the respective State fish and wildlife agencies, the host university, the Wildlife Management Institute, and the USFWS. The stakeholder-driven nature of the program’s research portfolio is designed to ensure that the...
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Climate

Click the image cards below to learn more about the effects of projected climate trends on humans, fish and wildlife populations, and habitats. Our researchers work with cooperators to better understand potential implications and to reduce uncertainty so that managers can better evaluate future scenarios and management options.
Climate

Climate

Click the image cards below to learn more about the effects of projected climate trends on humans, fish and wildlife populations, and habitats. Our researchers work with cooperators to better understand potential implications and to reduce uncertainty so that managers can better evaluate future scenarios and management options.
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Use of a riverscape-scale model of fundamental physical habitat requirements for freshwater mussels to quantify mussel declines in a mining-contaminated stream: the Big River, Old Lead Belt, Southeast Missouri

USGS researchers are using riverscape-scale models for freshwater mussels as part of the Natural Resource Damage Assessment and Restoration process in Big River, Missouri.
Use of a riverscape-scale model of fundamental physical habitat requirements for freshwater mussels to quantify mussel declines in a mining-contaminated stream: the Big River, Old Lead Belt, Southeast Missouri

Use of a riverscape-scale model of fundamental physical habitat requirements for freshwater mussels to quantify mussel declines in a mining-contaminated stream: the Big River, Old Lead Belt, Southeast Missouri

USGS researchers are using riverscape-scale models for freshwater mussels as part of the Natural Resource Damage Assessment and Restoration process in Big River, Missouri.
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Restoring aquatic habitats through dam removal

USGS researchers at the Massachusetts Cooperative Fish and Wildlife Research Unit investigated restoring aquatic habitats through dam removal.
Restoring aquatic habitats through dam removal

Restoring aquatic habitats through dam removal

USGS researchers at the Massachusetts Cooperative Fish and Wildlife Research Unit investigated restoring aquatic habitats through dam removal.
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Decision Science

We host strong decision science programs on University campuses listed below. Understanding cultural, social, and political factors drives decision-making. In other words, what people think matters. One of the key building blocks our program is we actively engage local communities and our research is relevant to the needs of the States, geographic regions, and the Nation. We make available new...
Decision Science

Decision Science

We host strong decision science programs on University campuses listed below. Understanding cultural, social, and political factors drives decision-making. In other words, what people think matters. One of the key building blocks our program is we actively engage local communities and our research is relevant to the needs of the States, geographic regions, and the Nation. We make available new...
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Forest Ecology

In various universities, many of our Units are situated in schools, divisions, or colleges of forestry, ecology, natural resources, and life sciences. Forest ecology is the study of plants, animals, and ecosystems, and the interconnected processes in forests. Our forest ecologists lead research and teach courses on prescribed fire, chronic wasting disease in deer, white-nose syndrome in bats...
Forest Ecology

Forest Ecology

In various universities, many of our Units are situated in schools, divisions, or colleges of forestry, ecology, natural resources, and life sciences. Forest ecology is the study of plants, animals, and ecosystems, and the interconnected processes in forests. Our forest ecologists lead research and teach courses on prescribed fire, chronic wasting disease in deer, white-nose syndrome in bats...
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Species Status Assesments

Decisions under the U.S. Endangered Species Act (ESA) require scientific input on the risk that the species will become extinct. A series of critiques on the role of science in ESA decisions have called for improved consistency and transparency in species risk assessments and clear distinctions between science input and policy application. The species status assessment (SSA) process has three...
Species Status Assesments

Species Status Assesments

Decisions under the U.S. Endangered Species Act (ESA) require scientific input on the risk that the species will become extinct. A series of critiques on the role of science in ESA decisions have called for improved consistency and transparency in species risk assessments and clear distinctions between science input and policy application. The species status assessment (SSA) process has three...
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Human Dimensions

Human dimensions of fish and wildlife conservation is the application of social science to management issues. Integration of human dimensions and ecological science allows for greater insights into management solutions and, ultimately, more durable decisions.
Human Dimensions

Human Dimensions

Human dimensions of fish and wildlife conservation is the application of social science to management issues. Integration of human dimensions and ecological science allows for greater insights into management solutions and, ultimately, more durable decisions.
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The gap between experts, farmers and non-farmers on perceived environmental vulnerability and the influence of values and beliefs

This research confirms that a gap between experts and farmers/non-farmers does exist, especially with respect to the state of the Ogallala Aquifer, playas, rivers and streams, lakes and reservoirs, native grasslands, wildlife habitats, farmland, native fish populations, and wildlife species.
The gap between experts, farmers and non-farmers on perceived environmental vulnerability and the influence of values and beliefs

The gap between experts, farmers and non-farmers on perceived environmental vulnerability and the influence of values and beliefs

This research confirms that a gap between experts and farmers/non-farmers does exist, especially with respect to the state of the Ogallala Aquifer, playas, rivers and streams, lakes and reservoirs, native grasslands, wildlife habitats, farmland, native fish populations, and wildlife species.
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The statistical power to detect regional temporal trends in riverine contaminants in the Chesapeake Bay Watershed

Issue: Chemical contamination of riverine ecosystems is a global concern, with potentially negative effects for human and ecological health. Land management activities (e.g., Best Management Practices; BMPs) are an important tool that can be used to reduce point and non-point sources of pollution. The Chesapeake Bay Program (CBP) has goals for (1) reducing toxic contaminants and (2) reducing...
The statistical power to detect regional temporal trends in riverine contaminants in the Chesapeake Bay Watershed

The statistical power to detect regional temporal trends in riverine contaminants in the Chesapeake Bay Watershed

Issue: Chemical contamination of riverine ecosystems is a global concern, with potentially negative effects for human and ecological health. Land management activities (e.g., Best Management Practices; BMPs) are an important tool that can be used to reduce point and non-point sources of pollution. The Chesapeake Bay Program (CBP) has goals for (1) reducing toxic contaminants and (2) reducing...
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Decline of Beluga Whales in Cook Inlet, Alaska

In conjunction with the Cook Inlet PhotoID Project and federal agencies, the USGS Washington Cooperative Fish and Wildlife Research Unit is aiming to learn more about the fundamental factors that drive changes in beluga whale population dynamics, specifically what affects the rates at which individuals survive and reproduce. Understanding this piece of the puzzle is critical to future conservation...
Decline of Beluga Whales in Cook Inlet, Alaska

Decline of Beluga Whales in Cook Inlet, Alaska

In conjunction with the Cook Inlet PhotoID Project and federal agencies, the USGS Washington Cooperative Fish and Wildlife Research Unit is aiming to learn more about the fundamental factors that drive changes in beluga whale population dynamics, specifically what affects the rates at which individuals survive and reproduce. Understanding this piece of the puzzle is critical to future conservation...
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New Cooperative Fish and Wildlife Research Unit Established in Nevada

The Nevada Department of Wildlife (NDOW), University of Nevada, Reno (UNR), U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service, and the Wildlife Management Institute (WMI) recently signed a cooperative agreement to establish a new Cooperative Fish and Wildlife Research Unit at UNR.
New Cooperative Fish and Wildlife Research Unit Established in Nevada

New Cooperative Fish and Wildlife Research Unit Established in Nevada

The Nevada Department of Wildlife (NDOW), University of Nevada, Reno (UNR), U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service, and the Wildlife Management Institute (WMI) recently signed a cooperative agreement to establish a new Cooperative Fish and Wildlife Research Unit at UNR.
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The Role of Drought in Aquatic Systems

Drought is a natural disturbance of aquatic and terrestrial ecosystems in many regions worldwide and can be a major factor that impacts aquatic communities. Drought frequency and intensity are expected to increase due to climate change and can also be exacerbated by water withdrawals and other human impacts, such as agricultural and industrial uses.
The Role of Drought in Aquatic Systems

The Role of Drought in Aquatic Systems

Drought is a natural disturbance of aquatic and terrestrial ecosystems in many regions worldwide and can be a major factor that impacts aquatic communities. Drought frequency and intensity are expected to increase due to climate change and can also be exacerbated by water withdrawals and other human impacts, such as agricultural and industrial uses.
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Native Trout Threatened by Climate Change and Invasive Species

The Rio Grande cutthroat trout is a cultural icon in Colorado and New Mexico, but its populations are threatened. After one hundred years of human population growth, climate change, and species invasions, the fish now occupies only 12% of its historic range.
Native Trout Threatened by Climate Change and Invasive Species

Native Trout Threatened by Climate Change and Invasive Species

The Rio Grande cutthroat trout is a cultural icon in Colorado and New Mexico, but its populations are threatened. After one hundred years of human population growth, climate change, and species invasions, the fish now occupies only 12% of its historic range.
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Actionable Science may Inform Climate Decisions about Coquí Frogs in Puerto Rico

Temperature and precipitation changes from climate change, along with habitat fragmentation and other effects of land use change threaten the long-term persistence of coquí frogs in Puerto Rico. The USGS North Carolina Cooperative Fish & Wildlife Research Unit (NC CRU) and Southeast Climate Adaptation Science Center (SE CASC) have supported research that models successful problem framing.
Actionable Science may Inform Climate Decisions about Coquí Frogs in Puerto Rico

Actionable Science may Inform Climate Decisions about Coquí Frogs in Puerto Rico

Temperature and precipitation changes from climate change, along with habitat fragmentation and other effects of land use change threaten the long-term persistence of coquí frogs in Puerto Rico. The USGS North Carolina Cooperative Fish & Wildlife Research Unit (NC CRU) and Southeast Climate Adaptation Science Center (SE CASC) have supported research that models successful problem framing.
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Translocating Florida scrub-jays to bolster the threatened species’ population

The Florida Cooperative Fish and Wildlife Research Unit (Florida CRU), a program in the Ecosystems Mission Area at the U.S. Geological Survey, is collaborating with state and federal agencies to assess the success of translocating Florida scrub-jays to bolster the threatened species’ population.
Translocating Florida scrub-jays to bolster the threatened species’ population

Translocating Florida scrub-jays to bolster the threatened species’ population

The Florida Cooperative Fish and Wildlife Research Unit (Florida CRU), a program in the Ecosystems Mission Area at the U.S. Geological Survey, is collaborating with state and federal agencies to assess the success of translocating Florida scrub-jays to bolster the threatened species’ population.
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Unique Study of Isolated Bobcat Population Confirms Accuracy of Extinction Model

The reintroduction of 32 bobcats to an island off the coast of Georgia more than three decades ago created an ideal experiment to examine the accuracy of a genetic-modeling technique that predicts extinction of isolated wildlife populations. That’s the conclusion of Penn State researchers who continue to monitor the bobcat population on Cumberland Island National Seashore, and who conducted a...
Unique Study of Isolated Bobcat Population Confirms Accuracy of Extinction Model

Unique Study of Isolated Bobcat Population Confirms Accuracy of Extinction Model

The reintroduction of 32 bobcats to an island off the coast of Georgia more than three decades ago created an ideal experiment to examine the accuracy of a genetic-modeling technique that predicts extinction of isolated wildlife populations. That’s the conclusion of Penn State researchers who continue to monitor the bobcat population on Cumberland Island National Seashore, and who conducted a...
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