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Determining condition and productivity of desert bighorn sheep on the Kofa National Wildlife Refuge

Dr. Tom Stephenson (left) and unit graduate student Matt Overstreet (right) using a portable ultrasound to measure body fat on a female desert bighorn sheep captured on the Kofa National Wildlife Refuge, Arizona.

Duration

July 2008 - December 2012

Narrative

Research objectives are to determine the relationships between maternal body condition and lamb survival and the influence of forage conditions and precipitation on the survival of adult ewes and lambs.

Research Products and Activities

Technical Publications

  • Overstreet, M.W., and J.W. Cain III. 2012. Survival, recruitment, and body condition of desert bighorn sheep in relation to forage conditions and precipitation on the Kofa National Wildlife Refuge, Arizona. Preliminary Project Report to USFWS-Kofa National Wildlife Refuge.
  • Overstreet, M.W., J.W. Cain III, and C.A. Caldwell. 2014. Adult survival, apparent lamb survival, and body condition of desert bighorn sheep in relation to habitat and precipitation on the Kofa National Wildlife Refuge, Arizona. Final Project Report to USFWS-Kofa National Wildlife Refuge.

Thesis

  • Overstreet, M.W. 2014. Body condition and survival of desert bighorn sheep in relation to habitat and precipitation on the Kofa National Wildlife Refuge, Arizona. M.S. Thesis. Department of Fish, Wildlife and Conservation Ecology, New Mexico State University. 69 pp.

Presentations

  • Overstreet, M.W., T.R. Stephenson, and J.W. Cain, III. 2011. Survival and Recruitment of Desert Bighorn Sheep in Relation to Maternal Body Condition Conditions on the Kofa National Wildlife Refuge, Arizona. Annual Meeting of the Arizona/New Mexico Chapter of The Wildlife Society, Pinetop, Arizona, USA.
  • Luedtke,C.J., M. Overstreet, J.W. Cain III, T. Stephenson, A.E. Justice-Allen. 2011. Prevalence of Mycoplasma ovipneumoniae in 6 geographically distinct populations of desert bighorn sheep in Arizona. 51st Desert Bighorn Council, Laughlin, Nevada, USA.
 

Current Staff

Federal Staff: 102

Masters Students: 247

Phd Students: 163

Post Docs: 55

University Staff: 266

5 Year Summary

Students graduated: 722

Scientific Publications: 1960

Presentations: 4355

 

Personnel

Funding Agencies

  • Science Support Partnerships

Links

Cooperative Research Units Program Headquarters Cooperators