Duane Diefenbach, PhD (Former Employee)
Science and Products
Filter Total Items: 80
Relative reproductive phenology and synchrony affect neonate survival in a nonprecocial ungulate Relative reproductive phenology and synchrony affect neonate survival in a nonprecocial ungulate
Degree of reproductive synchronization in prey is hypothesized as a predator defense strategy reducing prey risk via predator satiation or predator avoidance. Species with precocial young, especially those exposed to specialist predators, should be highly synchronous to satiate predators (predator satiation hypothesis), while prey with nonprecocial (i.e. altricial) young, especially...
Authors
Eric S. Michel, Bronson K. Strickland, Stephen Demarais, Jerrold L. Belant, Todd M. Kautz, Jared F. Duquette, Dean E. Beyer, Michael J. Chamberlain, Karl V. Miller, Rebecca M. Shuman, John C. Kilgo, Duane R. Diefenbach, Bret D. Wallingford, Justin K. Vreeland, Stephen S. Ditchkoff, Christopher S. DePerno, Christopher E. Moorman, M. Colter Chitwood, Marcus A. Lashley
Survival is negatively associated with glucocorticoids in a wild ungulate neonate Survival is negatively associated with glucocorticoids in a wild ungulate neonate
It is unknown how ungulate physiological responses to environmental perturbation influence overall population demographics. Moreover, neonatal physiological responses remain poorly studied despite the importance of neonatal survival to population growth. Glucocorticoid (GC) hormones potentially facilitate critical physiological and behavioral responses to environmental perturbations...
Authors
Tess Michelle Gingery, Duane R. Diefenbach, Catharine E. Pritchard, David C. Ensminger, Bret D. Wallingford, Christopher S. Rosenberry
Assessment of spatial genetic structure to identify populations at risk for infection of an emerging epizootic disease Assessment of spatial genetic structure to identify populations at risk for infection of an emerging epizootic disease
Understanding the geographic extent and connectivity of wildlife populations can provide important insights into the management of disease outbreaks but defining patterns of population structure is difficult for widely distributed species. Landscape genetic analyses are powerful methods for identifying cryptic structure and movement patterns that may be associated with spatial epizootic...
Authors
William L. Miller, Cassandra M. Miller-Butterworth, Duane R. Diefenbach, W. David Walter
Latitudinal variation in snowshoe hare (Lepus americanus) body mass: A test of Bergmann’s Rule Latitudinal variation in snowshoe hare (Lepus americanus) body mass: A test of Bergmann’s Rule
The relationship between body size and latitude have been the focus of dozens of studies across many species. However, results of testing Bergmann’s Rule – that organisms in colder climates or at higher latitudes possess larger body sizes – have been inconsistent across studies. We investigated whether snowshoe hares (Lepus americanus) follow the Rule by investigating differences in body...
Authors
Laura C. Gigliotti, Nathan D. Berg, Rudy Boonstra, Shawn M. Cleveland, Duane R. Diefenbach, Eric M. Gese, Jacob S. Ivan, Knut Kielland, Charles J. Krebs, Alexander V. Kumar, L. Scott Mills, Jonathan N. Pauli, H. Brian Underwood, Evan Wilson, M.J. Sheriff
Soil chemistry, and not short-term (1–2 year) deer exclusion, explains understory plant occupancy in forests affected by acid deposition Soil chemistry, and not short-term (1–2 year) deer exclusion, explains understory plant occupancy in forests affected by acid deposition
The loss of species diversity and plant community structure throughout the temperate deciduous forests of North America have often been attributed to overbrowsing by white-tailed deer (Odocoileus virginanus). Slow species recovery following removal from browsing, or reduction in deer density, has been termed a legacy effect of past deer herbivory. However, vegetation legacy effects have...
Authors
Danielle R. Begley-Miller, Duane R. Diefenbach, Marc E. McDill, Patrick J. Drohan, Christopher S. Rosenberry, Emily H. Just Domoto
Effect of male age structure on reproduction in white-tailed deer Effect of male age structure on reproduction in white-tailed deer
Selective harvest regimes that create female-biased sex ratios can potentially lead to delayed breeding, reduced breeding synchrony, reduced productivity, and a female-biased sex ratio of offspring. These resulting changes in breeding behavior and population dynamics have potential to adversely affect population growth. In 2002, Pennsylvania implemented harvest regulation changes that...
Authors
Duane R. Diefenbach, Gary Alt, Bret D. Wallingford, Christopher S. Rosenberry, Eric S. Long
Science and Products
Filter Total Items: 80
Relative reproductive phenology and synchrony affect neonate survival in a nonprecocial ungulate Relative reproductive phenology and synchrony affect neonate survival in a nonprecocial ungulate
Degree of reproductive synchronization in prey is hypothesized as a predator defense strategy reducing prey risk via predator satiation or predator avoidance. Species with precocial young, especially those exposed to specialist predators, should be highly synchronous to satiate predators (predator satiation hypothesis), while prey with nonprecocial (i.e. altricial) young, especially...
Authors
Eric S. Michel, Bronson K. Strickland, Stephen Demarais, Jerrold L. Belant, Todd M. Kautz, Jared F. Duquette, Dean E. Beyer, Michael J. Chamberlain, Karl V. Miller, Rebecca M. Shuman, John C. Kilgo, Duane R. Diefenbach, Bret D. Wallingford, Justin K. Vreeland, Stephen S. Ditchkoff, Christopher S. DePerno, Christopher E. Moorman, M. Colter Chitwood, Marcus A. Lashley
Survival is negatively associated with glucocorticoids in a wild ungulate neonate Survival is negatively associated with glucocorticoids in a wild ungulate neonate
It is unknown how ungulate physiological responses to environmental perturbation influence overall population demographics. Moreover, neonatal physiological responses remain poorly studied despite the importance of neonatal survival to population growth. Glucocorticoid (GC) hormones potentially facilitate critical physiological and behavioral responses to environmental perturbations...
Authors
Tess Michelle Gingery, Duane R. Diefenbach, Catharine E. Pritchard, David C. Ensminger, Bret D. Wallingford, Christopher S. Rosenberry
Assessment of spatial genetic structure to identify populations at risk for infection of an emerging epizootic disease Assessment of spatial genetic structure to identify populations at risk for infection of an emerging epizootic disease
Understanding the geographic extent and connectivity of wildlife populations can provide important insights into the management of disease outbreaks but defining patterns of population structure is difficult for widely distributed species. Landscape genetic analyses are powerful methods for identifying cryptic structure and movement patterns that may be associated with spatial epizootic...
Authors
William L. Miller, Cassandra M. Miller-Butterworth, Duane R. Diefenbach, W. David Walter
Latitudinal variation in snowshoe hare (Lepus americanus) body mass: A test of Bergmann’s Rule Latitudinal variation in snowshoe hare (Lepus americanus) body mass: A test of Bergmann’s Rule
The relationship between body size and latitude have been the focus of dozens of studies across many species. However, results of testing Bergmann’s Rule – that organisms in colder climates or at higher latitudes possess larger body sizes – have been inconsistent across studies. We investigated whether snowshoe hares (Lepus americanus) follow the Rule by investigating differences in body...
Authors
Laura C. Gigliotti, Nathan D. Berg, Rudy Boonstra, Shawn M. Cleveland, Duane R. Diefenbach, Eric M. Gese, Jacob S. Ivan, Knut Kielland, Charles J. Krebs, Alexander V. Kumar, L. Scott Mills, Jonathan N. Pauli, H. Brian Underwood, Evan Wilson, M.J. Sheriff
Soil chemistry, and not short-term (1–2 year) deer exclusion, explains understory plant occupancy in forests affected by acid deposition Soil chemistry, and not short-term (1–2 year) deer exclusion, explains understory plant occupancy in forests affected by acid deposition
The loss of species diversity and plant community structure throughout the temperate deciduous forests of North America have often been attributed to overbrowsing by white-tailed deer (Odocoileus virginanus). Slow species recovery following removal from browsing, or reduction in deer density, has been termed a legacy effect of past deer herbivory. However, vegetation legacy effects have...
Authors
Danielle R. Begley-Miller, Duane R. Diefenbach, Marc E. McDill, Patrick J. Drohan, Christopher S. Rosenberry, Emily H. Just Domoto
Effect of male age structure on reproduction in white-tailed deer Effect of male age structure on reproduction in white-tailed deer
Selective harvest regimes that create female-biased sex ratios can potentially lead to delayed breeding, reduced breeding synchrony, reduced productivity, and a female-biased sex ratio of offspring. These resulting changes in breeding behavior and population dynamics have potential to adversely affect population growth. In 2002, Pennsylvania implemented harvest regulation changes that...
Authors
Duane R. Diefenbach, Gary Alt, Bret D. Wallingford, Christopher S. Rosenberry, Eric S. Long