Duane Diefenbach, PhD (Former Employee)
Science and Products
Filter Total Items: 80
Influence of roads, rivers, and mountains on natal dispersal of white-tailed deer Influence of roads, rivers, and mountains on natal dispersal of white-tailed deer
Natural and anthropogenic landscape features, such as rivers, mountain ranges, and roads can alter animal dispersal paths and movement patterns. Consequently landscape, through its effects on dispersal, may influence many ecological processes, including disease transmission, invasion dynamics, and gene flow. To investigate influences of landscape features on dispersal patterns of a large...
Authors
E.S. Long, Duane R. Diefenbach, B.D. Wallingford, C.S. Rosenberry
Loss of butt-end leg bands on male wild turkeys Loss of butt-end leg bands on male wild turkeys
We estimated loss of butt-end leg bands on male wild turkeys (Meleagris gallapavo) captured in New York, Ohio, and Pennsylvania (USA) during December–March, 2006–2008. We used aluminum rivet leg bands as permanent marks to estimate loss of regular aluminum, enameled aluminum, anodized aluminum, and stainless steel butt-end leg bands placed below the spur. We used band loss information...
Authors
Duane R. Diefenbach, Mary Jo Casalena, Michael V. Schiavone, David A. Swanson, Michael Reynolds, Robert C. Boyd, Robert Eriksen, Bryan L. Swift
An evaluation of sex-age-kill (SAK) model performance An evaluation of sex-age-kill (SAK) model performance
The sex-age-kill (SAK) model is widely used to estimate abundance of harvested large mammals, including white-tailed deer (Odocoileus virginianus). Despite a long history of use, few formal evaluations of SAK performance exist. We investigated how violations of the stable age distribution and stationary population assumption, changes to male or female harvest, stochastic effects (i.e...
Authors
Joshua J. Millspaugh, John R. Skalski, Richard L. Townsend, Duane R. Diefenbach, Mark S. Boyce, Lonnie P. Hansen, Kent Kammermeyer
Estimating avian population size using Bowden's estimator Estimating avian population size using Bowden's estimator
Avian researchers often uniquely mark birds, and multiple estimators could be used to estimate population size using individually identified birds. However, most estimators of population size require that all sightings of marked birds be uniquely identified, and many assume homogeneous detection probabilities. Bowden's estimator can incorporate sightings of marked birds that are not...
Authors
Duane R. Diefenbach
Movement and habitat use of sika and white-tailed deer on Assateague Island National Seashore, Maryland Movement and habitat use of sika and white-tailed deer on Assateague Island National Seashore, Maryland
This research project was conducted to describe habitat use of sika deer (Cervus nippon) and white-tailed deer (Odocoileus virginianus) and possibly attribute the effects of ungulate herbivory to specific deer species, if spatial separation in habitat use could be identified. Sturm (2007) conducted an exclosure study to document the effect of feral horse (Equus caballus) herbivory, deer...
Authors
Duane R. Diefenbach, Sonja Christensen
Multiple proximate and ultimate causes of natal dispersal in white-tailed deer Multiple proximate and ultimate causes of natal dispersal in white-tailed deer
Proximate and ultimate causes of dispersal in vertebrates vary, and relative importance of these causes is poorly understood. Among populations, inter- and intrasexual social cues for dispersal are thought to reduce inbreeding and local mate competition, respectively, and specific emigration cue may affect dispersal distance, such that inbreeding avoidance dispersal tends to be farther...
Authors
E.S. Long, Duane R. Diefenbach, C.S. Rosenberry, B.D. Wallingford
Science and Products
Filter Total Items: 80
Influence of roads, rivers, and mountains on natal dispersal of white-tailed deer Influence of roads, rivers, and mountains on natal dispersal of white-tailed deer
Natural and anthropogenic landscape features, such as rivers, mountain ranges, and roads can alter animal dispersal paths and movement patterns. Consequently landscape, through its effects on dispersal, may influence many ecological processes, including disease transmission, invasion dynamics, and gene flow. To investigate influences of landscape features on dispersal patterns of a large...
Authors
E.S. Long, Duane R. Diefenbach, B.D. Wallingford, C.S. Rosenberry
Loss of butt-end leg bands on male wild turkeys Loss of butt-end leg bands on male wild turkeys
We estimated loss of butt-end leg bands on male wild turkeys (Meleagris gallapavo) captured in New York, Ohio, and Pennsylvania (USA) during December–March, 2006–2008. We used aluminum rivet leg bands as permanent marks to estimate loss of regular aluminum, enameled aluminum, anodized aluminum, and stainless steel butt-end leg bands placed below the spur. We used band loss information...
Authors
Duane R. Diefenbach, Mary Jo Casalena, Michael V. Schiavone, David A. Swanson, Michael Reynolds, Robert C. Boyd, Robert Eriksen, Bryan L. Swift
An evaluation of sex-age-kill (SAK) model performance An evaluation of sex-age-kill (SAK) model performance
The sex-age-kill (SAK) model is widely used to estimate abundance of harvested large mammals, including white-tailed deer (Odocoileus virginianus). Despite a long history of use, few formal evaluations of SAK performance exist. We investigated how violations of the stable age distribution and stationary population assumption, changes to male or female harvest, stochastic effects (i.e...
Authors
Joshua J. Millspaugh, John R. Skalski, Richard L. Townsend, Duane R. Diefenbach, Mark S. Boyce, Lonnie P. Hansen, Kent Kammermeyer
Estimating avian population size using Bowden's estimator Estimating avian population size using Bowden's estimator
Avian researchers often uniquely mark birds, and multiple estimators could be used to estimate population size using individually identified birds. However, most estimators of population size require that all sightings of marked birds be uniquely identified, and many assume homogeneous detection probabilities. Bowden's estimator can incorporate sightings of marked birds that are not...
Authors
Duane R. Diefenbach
Movement and habitat use of sika and white-tailed deer on Assateague Island National Seashore, Maryland Movement and habitat use of sika and white-tailed deer on Assateague Island National Seashore, Maryland
This research project was conducted to describe habitat use of sika deer (Cervus nippon) and white-tailed deer (Odocoileus virginianus) and possibly attribute the effects of ungulate herbivory to specific deer species, if spatial separation in habitat use could be identified. Sturm (2007) conducted an exclosure study to document the effect of feral horse (Equus caballus) herbivory, deer...
Authors
Duane R. Diefenbach, Sonja Christensen
Multiple proximate and ultimate causes of natal dispersal in white-tailed deer Multiple proximate and ultimate causes of natal dispersal in white-tailed deer
Proximate and ultimate causes of dispersal in vertebrates vary, and relative importance of these causes is poorly understood. Among populations, inter- and intrasexual social cues for dispersal are thought to reduce inbreeding and local mate competition, respectively, and specific emigration cue may affect dispersal distance, such that inbreeding avoidance dispersal tends to be farther...
Authors
E.S. Long, Duane R. Diefenbach, C.S. Rosenberry, B.D. Wallingford