Duane Diefenbach, PhD (Former Employee)
Science and Products
Filter Total Items: 80
Estimating White-tailed Deer abundance at Gettysburg National Military Park and Eisenhower National Historic Site Estimating White-tailed Deer abundance at Gettysburg National Military Park and Eisenhower National Historic Site
The mission at Gettysburg National Military Park and Eisenhower National Historic Site (GNMP-ENHS) is to preserve the historic character of the parks to enable current and future generations to understand and interpret the events that took place at each park. Management objectives include maintaining the landscape as it existed during the historic 1863 Civil War battle (e.g., dense...
Authors
David P. Stainbrook, Duane R. Diefenbach
Managing white-tailed deer: Eastern North America Managing white-tailed deer: Eastern North America
The ability of the white-tailed deer to adapt to and thrive in a wide variety of habitats requires different approaches to managing this species. Variation in both the population dynamics of the species and in the social and political factors that inuence how humans value white-tailed deer also necessitate different approaches. Consequently, providing an overview of the management of...
Authors
Duane R. Diefenbach, Stephen M. Shea
White-tailed deer age ratios as herd management and predator impact measures in Pennsylvania White-tailed deer age ratios as herd management and predator impact measures in Pennsylvania
A review of the Pennsylvania Game Commission's (PGC) deer management program and public concern about predator impacts on deer (Odocoileus virginianus) populations compelled the PGC to investigate the role of age ratios in developing management recommendations. Age ratios, such as proportion of juveniles in the antlerless harvest, may provide an index to population productivity and...
Authors
Christopher S. Rosenberry, Andrew S. Norton, Duane R. Diefenbach, Jeannine T. Fleegle, Bret D. Wallingford
Using multilevel models to quantify heterogeneity in resource selection Using multilevel models to quantify heterogeneity in resource selection
Models of resource selection are being used increasingly to predict or model the effects of management actions rather than simply quantifying habitat selection. Multilevel, or hierarchical, models are an increasingly popular method to analyze animal resource selection because they impose a relatively weak stochastic constraint to model heterogeneity in habitat use and also account for...
Authors
Tyler Wagner, Duane R. Diefenbach, Sonja Christensen, Andrew S. Norton
Nest success of grassland sparrows on reclaimed surface mines Nest success of grassland sparrows on reclaimed surface mines
Grasslands resulting from surface mine reclamation support grassland songbird populations in several midwestern and eastern states in the United States, especially where reclaimed mines are large (>1,000ha). However, most reclaimed surface mines in Pennsylvania are small (
Authors
G.E. Stauffer, Duane R. Diefenbach, M.R. Marshall, D.W. Brauning
Modeling the impacts of hunting on the population dynamics of red howler monkeys (Alouatta seniculus) Modeling the impacts of hunting on the population dynamics of red howler monkeys (Alouatta seniculus)
Overexploitation of wildlife populations occurs across the humid tropics and is a significant threat to the long-term survival of large-bodied primates. To investigate the impacts of hunting on primates and ways to mitigate them, we developed a spatially explicit, individual-based model for a landscape that included hunted and un-hunted areas. We used the large-bodied neotropical red...
Authors
Ruscena Wiederholt, Eduardo Fernandez-Duque, Duane R. Diefenbach, Rasanayagam Rudran
Science and Products
Filter Total Items: 80
Estimating White-tailed Deer abundance at Gettysburg National Military Park and Eisenhower National Historic Site Estimating White-tailed Deer abundance at Gettysburg National Military Park and Eisenhower National Historic Site
The mission at Gettysburg National Military Park and Eisenhower National Historic Site (GNMP-ENHS) is to preserve the historic character of the parks to enable current and future generations to understand and interpret the events that took place at each park. Management objectives include maintaining the landscape as it existed during the historic 1863 Civil War battle (e.g., dense...
Authors
David P. Stainbrook, Duane R. Diefenbach
Managing white-tailed deer: Eastern North America Managing white-tailed deer: Eastern North America
The ability of the white-tailed deer to adapt to and thrive in a wide variety of habitats requires different approaches to managing this species. Variation in both the population dynamics of the species and in the social and political factors that inuence how humans value white-tailed deer also necessitate different approaches. Consequently, providing an overview of the management of...
Authors
Duane R. Diefenbach, Stephen M. Shea
White-tailed deer age ratios as herd management and predator impact measures in Pennsylvania White-tailed deer age ratios as herd management and predator impact measures in Pennsylvania
A review of the Pennsylvania Game Commission's (PGC) deer management program and public concern about predator impacts on deer (Odocoileus virginianus) populations compelled the PGC to investigate the role of age ratios in developing management recommendations. Age ratios, such as proportion of juveniles in the antlerless harvest, may provide an index to population productivity and...
Authors
Christopher S. Rosenberry, Andrew S. Norton, Duane R. Diefenbach, Jeannine T. Fleegle, Bret D. Wallingford
Using multilevel models to quantify heterogeneity in resource selection Using multilevel models to quantify heterogeneity in resource selection
Models of resource selection are being used increasingly to predict or model the effects of management actions rather than simply quantifying habitat selection. Multilevel, or hierarchical, models are an increasingly popular method to analyze animal resource selection because they impose a relatively weak stochastic constraint to model heterogeneity in habitat use and also account for...
Authors
Tyler Wagner, Duane R. Diefenbach, Sonja Christensen, Andrew S. Norton
Nest success of grassland sparrows on reclaimed surface mines Nest success of grassland sparrows on reclaimed surface mines
Grasslands resulting from surface mine reclamation support grassland songbird populations in several midwestern and eastern states in the United States, especially where reclaimed mines are large (>1,000ha). However, most reclaimed surface mines in Pennsylvania are small (
Authors
G.E. Stauffer, Duane R. Diefenbach, M.R. Marshall, D.W. Brauning
Modeling the impacts of hunting on the population dynamics of red howler monkeys (Alouatta seniculus) Modeling the impacts of hunting on the population dynamics of red howler monkeys (Alouatta seniculus)
Overexploitation of wildlife populations occurs across the humid tropics and is a significant threat to the long-term survival of large-bodied primates. To investigate the impacts of hunting on primates and ways to mitigate them, we developed a spatially explicit, individual-based model for a landscape that included hunted and un-hunted areas. We used the large-bodied neotropical red...
Authors
Ruscena Wiederholt, Eduardo Fernandez-Duque, Duane R. Diefenbach, Rasanayagam Rudran