Cooperative Research Units


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Filter Total Items: 2,494
Year Published: 2018

Landscape composition mediates movement and habitat selection in bobcats (Lynx rufus): Implications for conservation planning

The analysis of individual movement choices can be used to better understand population-level resource selection and inform management.

Abouelezz, Hanem; Donovan, Therese M.; Mickey, Ruth M.; Murdock, James N.; Freeman, Mark; Royar, Kim
Abouelezz, H.G., Donovan, T.M., Mickey, R.M. et al. Landscape Ecol (2018) 33: 1301.

Year Published: 2018

Survival and cause-specific mortality of translocated female mule deer in southern New Mexico, USA

Context: Many mule deer (Odocoileus hemionus) populations in New Mexico have failed to recover from previous population declines, while some populations near urban areas have increased, resulting in more frequent human–wildlife conflicts. Translocations were used in an effort to simultaneously reduce an urban mule deer population and augment...

Cain, James W.; Ashling, Jana B.; Liley, Stewart

Year Published: 2018

Wildlife management is science based: Myth or reality?

In the January/February issue of The Wildlife Professional, a group of wildlife leaders discussed what they considered "myths" in wildlife management and invited other wildlife professionals to contribute their favorites. Here, five wildlife professionals take up that theme with their discussions of the scientific basis of wildlife management.

Decker, Daniel J.; Organ, John F.; Forstchen, Ann; Schiavone, Michael V.; Fuller, Angela K.
Decker, D.J., J.F. Organ, A.B. Forstchen, M.V. Schiavone, and A.K. Fuller. 2018. Wildlife management is science based: myth or reality? The Wildlife Professional 12(4): 30-32.

Year Published: 2018

Comparison of a prepositioned areal electrofishing device and fixed underwater videography for sampling riverine fishes

Prepositioned areal electrofishing devices (PAEDs) are used to evaluate microhabitat use by fishes because they minimize fright biases associated with traditional electrofishing techniques (e.g., boat electrofishing). Similarly, fixed underwater videography (FUV) is commonly used to minimize the effect of observers on fish behavior. The specific...

Branigan, Philip R.; Quist, Michael C.; Shepard, Bradley B.; Ireland, Susan C.
Western North American Naturalist 78(1):65-75. 2018

Year Published: 2018

Message in a bottle: The story of drifting plastic in the eastern Mediterranean Sea

The Mediterranean Sea is a closed basin with limited water exchange through the Strait of Gibraltar, and sites along its shores show the greatest densities of marine debris in the world. Plastic bottles, which are a growing concern due to high consumption of soft drinks and bottled water, constitute most of the floating marine debris. In this...

Pasternak, Galia; Zviely, Dov; Ariel, Asaf; Spanier, Ehud; Ribic, Christine
Galia Pasternak, Dov Zviely, Asaf Ariel, Ehud Spanier, Christine A. Ribic, Message in a bottle – The story of floating plastic in the eastern Mediterranean sea, Waste Management, Volume 77, 2018, Pages 67-77, ISSN 0956-053X,

Year Published: 2018

Animal movement models for migratory individuals and groups

Animals often exhibit changes in their behaviour during migration. Telemetry data provide a way to observe geographic position of animals over time, but not necessarily changes in the dynamics of the movement process. Continuous‐time models allow for statistical predictions of the trajectory in the presence of measurement error and during periods...

Hooten, Mevin B.; Scharf, Henry R.; Hefley, Trevor J.; Pearse, Aaron T.; Weegman, Mitch D.

Year Published: 2018

Age and performance at fledging are a cause and consequence of juvenile mortality between life stages

Should they stay or should they leave? The age at which young transition between life stages, such as living in a nest versus leaving it, differs among species and the reasons why are unclear. We show that offspring of songbird species that leave the nest at a younger age have less developed wings that cause poorer flight performance and greater...

Martin, Thomas E.; Tobalske, Bret; Riordan, Margaret M.; Case, Samuel B.; Dial, Kenneth P.

Year Published: 2018

Nonbreeding duck use at Central Flyway National Wildlife Refuges

Within the U.S. portion of the Central Flyway, the U.S. Fish and Wildlife Service manages waterfowl on numerous individual units (i.e., Refuges) within the National Wildlife Refuge System. Presently, the extent of waterfowl use that Refuges receive and the contribution of Refuges to waterfowl populations (i.e., the proportion of the Central Flyway...

Andersson, Kent; Davis, Craig A.; Harris, Grant; Haukos, David A.

Year Published: 2018

Evaluating outcomes of management targeting the recovery of a migratory songbird of conservation concern

Assessing outcomes of habitat management is critical for informing and adapting conservation plans. From 2013 – 2019, a multi-stage management initiative aims to create >25,000 ha of shrubland and early-successional vegetation to benefit Golden-winged Warblers (Vermivora chrysoptera) in managed forested landscapes of the western Great Lakes...

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

Year Published: 2018

Are waterfowl food resources limited during spring migration? A bioenergetic assessment of playas in Nebraska's rainwater basin

Accurate bioenergetic carrying capacity estimates of wetlands on public and private lands, as well as those managed for crop production are important for managing waterfowl populations and habitats. Given the importance of wetlands in the Rainwater Basin region of Nebraska for spring migrating waterfowl, we quantified and compared seed and...

Schepker, Travis J.; LaGrange, Ted; Webb, Elisabeth B.
Schepker, T.J., LaGrange, T. & Webb, E.B. Wetlands (2018).

Year Published: 2018

Avian response to shade‐layer restoration in coffee plantations in Puerto Rico

Documenting the evolving processes associated with habitat restoration and how long it takes to detect avian demographic responses is crucial to evaluate the success of restoration initiatives and to identify ways to improve their effectiveness. The importance of this endeavor prompted the U.S. Fish and Wildlife Service and the USDA Natural...

Irizarry, Amarilys D.; Collazo, Jaime A.; Pacifici, Krishna; Reich, Brian J.; Battle, Kathryn E.

Year Published: 2018

Chasing a changing climate: Reproductive and dispersal traits predict how sessile species respond to global warming

AimStudies of species' range shifts have become increasingly relevant for understanding ecology and biogeography in the face of accelerated global change. The combination of limited mobility and imperilled status places some species at a potentially greater risk of range loss, extirpation or extinction due to climate change. To assess the ability...

Archambault, Jennifer M.; Cope, W. Gregory; Kwak, Thomas J.