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Cooperative Research Units

Established in 1935, our mission is our hallmark: meet the actionable science needs of our cooperators, provide technical assistance, and develop the future workforce through graduate education/mentoring. The Coop Units are located on 40 universities in 38 states. They are called Coop Units because each cooperator plays a role in the staffing, funding and directing the units. 

News

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Northern Spotted Owl Still Fights for Survival

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Friday's Findings - October 1 2021

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Nevada Becomes 39th State to Create Multi-Agency Cooperative Research Unit

Publications

Movement dynamics of smallmouth bass (Micropterus dolomieu) in a large river-tributary system

Smallmouth bass, Micropterus dolomieu Lacepède, movement dynamics were investigated in a connected mainstem river-tributary system. Smallmouth bass moved large distances annually (n = 84 fish, average = 24.6 ± 25.9 km, range = 0.03 to 118 km) and had three peak movement periods (pre-spawn, post-spawn and overwintering). Movement into and out of tributaries was common, but the movement between main

Oyster model inventory: Identifying critical data and modeling approaches to support restoration of oyster reefs in coastal U.S. Gulf of Mexico waters

Executive SummaryAlong the coast of the U.S. Gulf of Mexico, the eastern oyster (Crassostrea virginica) plays important ecological and economic roles. Commercial landings from this region account for more than 50 percent of all U.S. landings; these oyster reefs also provide varied ecosystem services, including nursery habitat for many fish and macroinvertebrate species, shoreline protection, and w

Evaluation of an elk detection probability model in the Black Hills, South Dakota

Since 1993, elk (Cervus canadensis nelsoni) abundance in the Black Hills of South Dakota has been estimated using a detection probability model previously developed in Idaho, though it is likely biased because of a failure to account for visibility biases under local conditions. To correct for this bias, we evaluated the current detection probability across the Black Hills during January and Febru

Science

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.
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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.
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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.
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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.
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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.
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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.
Learn More