W. David Walter, PhD (Former Employee)
Science and Products
Filter Total Items: 14
No Result Found
Filter Total Items: 56
Habitat influences distribution of chronic wasting disease in white-tailed deer Habitat influences distribution of chronic wasting disease in white-tailed deer
Chronic wasting disease (CWD) is a transmissible spongiform encephalopathy that was first detected in 1967 in a captive research facility in Colorado. In the northeastern United States, CWD was first confirmed in white-tailed deer (Odocoileus virginianus) in 2005. Because CWD is a new and emerging disease with a spatial distribution that had yet to be assessed in the Northeast, we...
Authors
Tyler S. Evans, Megan S. Kirchgessner, B. Eyler, Christopher W. Ryan, W. David Walter
Is there a single best estimator? selection of home range estimators using area- under- the-curve Is there a single best estimator? selection of home range estimators using area- under- the-curve
Background Global positioning system (GPS) technology for monitoring home range and movements of wildlife has resulted in prohibitively large sample sizes of locations for traditional estimators of home range. We used area-under-the-curve to explore the fit of 8 estimators of home range to data collected with both GPS and concurrent very high frequency (VHF) technology on a terrestrial...
Authors
W. David Walter, Dave P. Onorato, Justin W. Fischer
Surveillance and monitoring of white-tailed deer for chronic wasting disease in the northeastern United States Surveillance and monitoring of white-tailed deer for chronic wasting disease in the northeastern United States
Chronic wasting disease (CWD) is a prion disease that affects both wild and captive cervid populations. In the past 45 y, CWD has spread from northern Colorado to all bordering states, as well as the midwestern United States (Midwest) and northeastern United States (Northeast), Canada, and South Korea. Because CWD is a relatively new issue for wildlife management agencies in the...
Authors
Tyler S. Evans, Krysten L. Schuler, W. David Walter
Linking bovine tuberculosis on cattle farms to white-tailed deer and environmental variables using Bayesian hierarchical analysis Linking bovine tuberculosis on cattle farms to white-tailed deer and environmental variables using Bayesian hierarchical analysis
Bovine tuberculosis is a bacterial disease caused by Mycobacterium bovis in livestock and wildlife with hosts that include Eurasian badgers (Meles meles), brushtail possum (Trichosurus vulpecula), and white-tailed deer (Odocoileus virginianus). Risk-assessment efforts in Michigan have been initiated on farms to minimize interactions of cattle with wildlife hosts but research onM. bovis...
Authors
W. David Walter, Rick Smith, Mike Vanderklok, Kurt C. VerCauterren
Soil clay content underlies prion infection odds Soil clay content underlies prion infection odds
Environmental factors—especially soil properties—have been suggested as potentially important in the transmission of infectious prion diseases. Because binding to montmorillonite (an aluminosilicate clay mineral) or clay-enriched soils had been shown to enhance experimental prion transmissibility, we hypothesized that prion transmission among mule deer might also be enhanced in ranges...
Authors
W. David Walter, D.P. Walsh, Matthew L. Farnsworth, Dana L. Winkelman, M.W. Miller
Dietary response of sympatric deer to fire using stable isotope analysis of liver tissue Dietary response of sympatric deer to fire using stable isotope analysis of liver tissue
Carbon (??13C) and nitrogen (??15N) isotopes in biological samples from large herbivores identify photosynthetic pathways (C3 vs. C4) of plants they consumed and can elucidate potential nutritional characteristics of dietary selection. Because large herbivores consume a diversity of forage types, ??13C and ??15N in their tissue can index ingested and assimilated diets through time. We...
Authors
W. David Walter, T.J. Zimmerman, David M. Leslie, J.A. Jenks
Response of Rocky Mountain elk (Cervus elaphus) to wind-power development Response of Rocky Mountain elk (Cervus elaphus) to wind-power development
Wind-power development is occurring throughout North America, but its effects on mammals are largely unexplored. Our objective was to determine response (i.e., home-range, diet quality) of Rocky Mountain elk (Cervus elaphus) to wind-power development in southwestern Oklahoma. Ten elk were radiocollared in an area of wind-power development on 31 March 2003 and were relocated bi-weekly...
Authors
W. David Walter, David M. Leslie, J.A. Jenks
Efficacy of immobilizing free-ranging elk with Telazol® and xylazine hydrochloride using transmitter-equipped darts Efficacy of immobilizing free-ranging elk with Telazol® and xylazine hydrochloride using transmitter-equipped darts
From January 1999 to April 2002, 14 free-ranging elk were darted with a mixture of Telazol® reconstituted with xylazine hydrochloride (HCl) in a forested habitat in southwestern Oklahoma and north-central Arkansas. Elk were darted from ground blinds, tree stands, or a vehicle at distances of 14–46 m and were recovered 37–274 m from the dart site. Elk were located using radiotelemetry...
Authors
W. David Walter, David M. Leslie, Jennifer H. Herner-Thogmartin, Kimberly G. Smith, Michael E. Cartwright
Science and Products
Filter Total Items: 14
No Result Found
Filter Total Items: 56
Habitat influences distribution of chronic wasting disease in white-tailed deer Habitat influences distribution of chronic wasting disease in white-tailed deer
Chronic wasting disease (CWD) is a transmissible spongiform encephalopathy that was first detected in 1967 in a captive research facility in Colorado. In the northeastern United States, CWD was first confirmed in white-tailed deer (Odocoileus virginianus) in 2005. Because CWD is a new and emerging disease with a spatial distribution that had yet to be assessed in the Northeast, we...
Authors
Tyler S. Evans, Megan S. Kirchgessner, B. Eyler, Christopher W. Ryan, W. David Walter
Is there a single best estimator? selection of home range estimators using area- under- the-curve Is there a single best estimator? selection of home range estimators using area- under- the-curve
Background Global positioning system (GPS) technology for monitoring home range and movements of wildlife has resulted in prohibitively large sample sizes of locations for traditional estimators of home range. We used area-under-the-curve to explore the fit of 8 estimators of home range to data collected with both GPS and concurrent very high frequency (VHF) technology on a terrestrial...
Authors
W. David Walter, Dave P. Onorato, Justin W. Fischer
Surveillance and monitoring of white-tailed deer for chronic wasting disease in the northeastern United States Surveillance and monitoring of white-tailed deer for chronic wasting disease in the northeastern United States
Chronic wasting disease (CWD) is a prion disease that affects both wild and captive cervid populations. In the past 45 y, CWD has spread from northern Colorado to all bordering states, as well as the midwestern United States (Midwest) and northeastern United States (Northeast), Canada, and South Korea. Because CWD is a relatively new issue for wildlife management agencies in the...
Authors
Tyler S. Evans, Krysten L. Schuler, W. David Walter
Linking bovine tuberculosis on cattle farms to white-tailed deer and environmental variables using Bayesian hierarchical analysis Linking bovine tuberculosis on cattle farms to white-tailed deer and environmental variables using Bayesian hierarchical analysis
Bovine tuberculosis is a bacterial disease caused by Mycobacterium bovis in livestock and wildlife with hosts that include Eurasian badgers (Meles meles), brushtail possum (Trichosurus vulpecula), and white-tailed deer (Odocoileus virginianus). Risk-assessment efforts in Michigan have been initiated on farms to minimize interactions of cattle with wildlife hosts but research onM. bovis...
Authors
W. David Walter, Rick Smith, Mike Vanderklok, Kurt C. VerCauterren
Soil clay content underlies prion infection odds Soil clay content underlies prion infection odds
Environmental factors—especially soil properties—have been suggested as potentially important in the transmission of infectious prion diseases. Because binding to montmorillonite (an aluminosilicate clay mineral) or clay-enriched soils had been shown to enhance experimental prion transmissibility, we hypothesized that prion transmission among mule deer might also be enhanced in ranges...
Authors
W. David Walter, D.P. Walsh, Matthew L. Farnsworth, Dana L. Winkelman, M.W. Miller
Dietary response of sympatric deer to fire using stable isotope analysis of liver tissue Dietary response of sympatric deer to fire using stable isotope analysis of liver tissue
Carbon (??13C) and nitrogen (??15N) isotopes in biological samples from large herbivores identify photosynthetic pathways (C3 vs. C4) of plants they consumed and can elucidate potential nutritional characteristics of dietary selection. Because large herbivores consume a diversity of forage types, ??13C and ??15N in their tissue can index ingested and assimilated diets through time. We...
Authors
W. David Walter, T.J. Zimmerman, David M. Leslie, J.A. Jenks
Response of Rocky Mountain elk (Cervus elaphus) to wind-power development Response of Rocky Mountain elk (Cervus elaphus) to wind-power development
Wind-power development is occurring throughout North America, but its effects on mammals are largely unexplored. Our objective was to determine response (i.e., home-range, diet quality) of Rocky Mountain elk (Cervus elaphus) to wind-power development in southwestern Oklahoma. Ten elk were radiocollared in an area of wind-power development on 31 March 2003 and were relocated bi-weekly...
Authors
W. David Walter, David M. Leslie, J.A. Jenks
Efficacy of immobilizing free-ranging elk with Telazol® and xylazine hydrochloride using transmitter-equipped darts Efficacy of immobilizing free-ranging elk with Telazol® and xylazine hydrochloride using transmitter-equipped darts
From January 1999 to April 2002, 14 free-ranging elk were darted with a mixture of Telazol® reconstituted with xylazine hydrochloride (HCl) in a forested habitat in southwestern Oklahoma and north-central Arkansas. Elk were darted from ground blinds, tree stands, or a vehicle at distances of 14–46 m and were recovered 37–274 m from the dart site. Elk were located using radiotelemetry...
Authors
W. David Walter, David M. Leslie, Jennifer H. Herner-Thogmartin, Kimberly G. Smith, Michael E. Cartwright