Cooperative Research Units

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The Cooperative Research Units Program conducts research on a wide range of disciplines related to fish, wildlife, and natural resource management. Our 40 Units collectively conduct research on virtually every type of North American ecological community. 

Data and Tools Technical Publications
Filter Total Items: 104
Date published: May 18, 2020

Migration Corridors of Mule Deer in the Kaibab North Herd in Arizona

Mule deer of the Kaibab North herd on the Kaibab Plateau are treasured for their historic and contemporary significance in North America. They are the densest population of mule deer in Arizona, with an estimate of 10,200 individuals in 2019. This report compiles two research efforts, the first completed by Arizona Game and Fish Department in 2014, and the second from Utah Division of Wil

Date published: May 4, 2020

At-sea movements of Masked Boobies from Pedro Cays, Jamaica, 2012

As part of a larger effort to examine individual-based movement patterns and habitat use at sea for seabirds in the Caribbean, a tracking study of Masked Boobies (Sula dactylatra) breeding on the Pedro Cays, Jamaica, was implemented in 2012. This population is one of the largest of the few breeding groups in the region. The Masked Booby is considered to be declining and regionally-threa

Date published: April 28, 2020

Bio-engineered oyster reef monitoring, Eloi Bay, Louisiana, 2017-2019

This dataset includes annual encrusting organism (oyster, mussel, barnacle) counts and density (ind m-2), and oyster shell height (mm) data for five bio-engineered reef designs: OysterbreakTM (OB), Wave Attenuating Device® (WAD), Reef Ball™ (rows of two, RFB2; rows of three, RFB3), ReefBLK℠ (RBL), and ShoreJAX™ (JAX%

Date published: March 24, 2020

Blood Analytes in Brown Pelican in the Northern Gulf of Mexico (2013-2015)

The Eastern Brown Pelican (Pelecanus occidentalis carolinensis) is a large-bodied seabird that nests in colonies of 10 to upwards of 5,000 pairs, on nearshore islands in subtropical and tropical North American waters. It breeds between March and August, laying 2–3 eggs and raising 1–2 chicks per year. The species is facultatively migratory during nonbreeding, with some

Date published: March 24, 2020

Polycyclic Aromatic Hydrocarbons in Brown Pelican in the Northern Gulf of Mexico (2013-2015)

The datasets stored in this page summarize polycyclic aromatic hydrocarbon (PAH) referece data and values collected from Brown Pelican nestlings and breeding adults from 2013-2015 in the Northern Gulf of Mexico at 9 breeding colonies from Texas to the Florida Panhandle.The datasets and FGDC-compliant metadata are available as .zip files. Dataset "Polycyclic Aromatic Hydrocarbons in Brown

Date published: February 26, 2020

Reproductive Physiology of Brown Pelican Along the Coast of Alabama, 2017-2018

The datasets stored in this folder summarize reproductive data for Brown Pelicans nesting on Gaillard and Cat Islands, Alabama, in 2017 and 2018. Data include nest and nestling survival, nest site characteristics, environmental covariates, and temperatures recorded inside nests. The datasets and FGDC-compliant metadata are available as .zip files. Dataset "Reproductive Physiology of

Date published: February 24, 2020

Shapefiles and hydraulic models for selected streams in Stark County, Ohio.

Digital flood-inundation maps were created by the U.S. Geological Survey (USGS) in cooperation with the Muskingum Watershed Conservancy District and the Stark County Commissioners as part of a Federal Emergency Management Agency (FEMA) Flood Insurance Study (FIS). The flood-inundation maps show estimates of the areal extent corresponding to the 1% and 0.2% annual-exceedance probab

Date published: February 24, 2020

Model archive for the hydraulic modeling of selected streams in Stark County, Ohio.

Dataset is a model archive containing all relevant files to create digital flood-inundation maps by the U.S. Geological Survey (USGS) in cooperation with the Muskingum Watershed Conservancy District and the Stark County Commissioners as part of a Federal Emergency Management Agency (FEMA) Flood Insurance Study (FIS). The flood-inundation maps show estimates of the areal extent corresp

Date published: February 24, 2020

Input and output shapefiles used in the hydraulic modeling for selected streams in Stark County, Ohio.

Digital flood-inundation maps were created by the U.S. Geological Survey (USGS) in cooperation with the Muskingum Watershed Conservancy District and the Stark County Commissioners as part of a Federal Emergency Management Agency (FEMA) Flood Insurance Study (FIS). The flood-inundation maps show estimates of the areal extent corresponding to the 1% and 0.2% annual-exceedance probab

Date published: January 22, 2020

Predicted habitat suitability rasters for at-risk herpetofauna species in the longleaf pine system in the Southeast US

The raster data in the geodatabase represent range-wide habitat suitability model predictions for five species of herpetofauna: gopher tortoise (Gopherus polyphemus), southern hognose snake (Heterodon simus), Florida pine snake (Pituophis melanoleucus mugitus), gopher frog (Lithobates capito), and striped newt (Notophthalmus perstriatus). Collectively, the habitat

Date published: January 22, 2020

Expert responses of influential habitat attributes for at-risk species

The data indicate the number of experts (out of 27 who were involved in this expert elicitation process) who rated a set of environmental, ecological, climatic, anthropogenic, or other attributes as highly, somewhat, or slightly influential to habitat and species conditions. Experts provided responses for the gopher tortoise (Gopherus polyphemus), southern hognose snake (H

Date published: January 22, 2020

Predicted habitat suitability rasters for at-risk herpetofauna species in the longleaf pine system in the Southeast US

The raster data in the geodatabase represent range-wide habitat suitability model predictions for five species of herpetofauna: gopher tortoise (Gopherus polyphemus), southern hognose snake (Heterodon simus), Florida pine snake (Pituophis melanoleucus mugitus), gopher frog (Lithobates capito), and striped newt (Notophthalmus perstriatus). Collectively, the habitat

Filter Total Items: 2,921
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Year Published: 2020

Reproductive ecology and movement of pallid sturgeon in the upper Missouri River, Montana

Successful recruitment of endangered pallid sturgeon has not been documented in the upper Missouri River basin for decades, and research on the reproductive ecology of pallid sturgeon has been hindered by low sample size. A conservation propagation program was initiated in the 1990s, and the oldest age class of hatchery‐origin pallid sturgeon are...

Holmquist, Luke M.; Guy, Christopher S.; Tews, Anne; Trimpe, David J.; Webb, Molly A. H.

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Year Published: 2020

Comparing grasshopper (Orthoptera: Acrididae) communities on tallgrass prairie reconstructions and remnants in Missouri

Tallgrass prairies, which once occupied a large swath of central North America, face the combined challenges of habitat loss and fragmentation. In Missouri, where less than 1% the historical prairie remains, prairies are being reconstructed from agricultural or wooded land.Invertebrates are often assumed to colonise reconstructions if native...

LaRose, J. P.; Webb, Elisabeth B.; Finke, D. L.

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Year Published: 2020

Bridging the gap between salmon spawner abundance and marine nutrient assimilation by juvenile salmon: Seasonal cycles and landscape effects at the watershed scale

Anadromous Pacific salmon are semelparous, and resource subsidies from spawning adults (marine-derived nutrients, or MDN) benefit juvenile salmonids rearing in freshwater. However, it remains unclear how MDN assimilation relates to spawner abundance within a watershed. To address this, we examined seasonal, watershed-scale patterns of MDN...

Joy, Philip J.; Stricker, Craig A.; Ivanoff, Renae; Wipfli, Mark S.; Seitz, Andrew C.; Tyers, Matthew

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Year Published: 2020

Relation of fish intersex to contaminants in riverine sport fishes

Endocrine active compounds (EACs) are pollutants that have been recognized as an emerging and widespread threat to aquatic ecosystems globally. Intersex, the presence of female germ cells within a predominantly male gonad, is considered a biomarker of endocrine disruption caused by EACs. We measured a suite of EACs and assessed...

Grieshaber, C. A.; Penland, T. N.; Kwak, Thomas J.; Cope, W. G.; Heise, R. J.; Law, J. M.; Shea, D.; Aday, D. D.; Rice, J. A.; Kullman, S. W.

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Year Published: 2019

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...

Wagner, Tyler; Schall, Megan K.; Timothy Wertz; Smith, Geoffrey D.; Blazer, Vicki S.

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Year Published: 2019

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...

Phillips, Evan C.; Lehman, Chadwick P.; Klaver, Robert W.; Jarding, Angela R.; Rupp, Susan P.; Jenks, Jonathan A.; Jacques, Christopher N.

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Year Published: 2019

Black Scoter habitat use along the southeastern coast of the United States

While the Atlantic Coast of the United States and Canada is a major wintering area for sea ducks, knowledge about their wintering habitat use is relatively limited. Black Scoters have a broad wintering distribution and are the only open water species of sea duck that is abundant along the southeastern coast of the United States. Our study...

Plumpton, H. M.; Silverman, E. D.; Ross, Beth

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Year Published: 2019

Spatial ecology of urban striped skunks (Mephitis mephitis) in the Northern Great Plains: A framework for future oral rabies vaccination programs

Few studies have investigated the ecology of urban striped skunks (Mephitis mephitis) despite their role as a primary rabies vector species paired with an ability to thrive in these landscapes. Information on home range, nightly movements, and habitat selection, is important for rabies management planning regarding the placement of oral rabies...

Schneider, Anna L.; Gilbert, Amy T.; Walter, W. David; Vandeberg, Gregory S.; Boulanger, Jason R.

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Year Published: 2019

Evaluating environmental change and behavioral decision-making for sustainability policy using an agent-based model: A case study for the Smoky Hill River Watershed, Kansas

Sustainability has been at the forefront of the environmental research agenda of the integrated anthroposphere, hydrosphere, and biosphere since the last century and will continue to be critically important for future environmental science. However, linking humans and the environment through effective policy remains a major challenge for...

Granco, Gabriel; Heier Stamm, Jessica L.; Bergtold, Jason S.; Daniels, Melinda D.; Sanderson, Matthew R.; Sheshukov, Aleksey Y.; Mather, Martha E.; Caldas, Marcellus M.; Ramsey, Steven M.; Lehrter, Richard; Haukos, David A.; Gao, Jungang; Chatterjee, Sarmistha; Nifong, James C.; Aistrup, Joseph

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Year Published: 2019

Differences in mosquito communities in six cities in Oklahoma

Vector-borne diseases in the United States have recently increased as a result of the changing nature of vectors, hosts, reservoirs, pathogens, and the ecological and environmental conditions. Current information on vector habitats and how mosquito community composition varies across space and time is vital to successful vector-borne disease...

Bradt, D.; Wormington, J.D.; Long, James M.; Hoback, W. W.; Noden, B.H.

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Year Published: 2019

Left out in the rain: Comparing productivity of two associated species exposes a leak in the umbrella species concept

Multi-species approaches to wildlife management have become commonplace and purport to benefit entire biological communities. These strategies aim to manage different, often taxonomically distant species under a single regime based on shared habitat associations and/or co-occurrence in the landscape. We tested the efficacy of multi-species...

Kramer, Gunnar R.; Peterson, Sean M.; Daly, Kyle O.; Streby, Henry M.; Andersen, David

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Year Published: 2019

GoMAMN strategic bird monitoring guidelines: Avian health

No abstract available.

Ottinger, M. A.; Maness, T.; Grace, J. K.; Wilson, R. R.; Jodice, Patrick G.R.