Shawn T O'Neil
Shawn O'Neil is a wildlife biologist at the USGS Western Ecological Research Center.
Science and Products
Filter Total Items: 14
Data maps of predicted raven density and areas of potential impact to nesting sage-grouse within sagebrush ecosystems of the North American Great Basin
These data represent predicted common raven (Corvus corax) density (ravens/square-km) derived from random forest models given field site unit-specific estimates of raven density that were obtained from hierarchical distance sampling models at 43 field site units within the Great Basin region, USA. Fifteen landscape-level predictors summarizing climate, vegetation, topography and anthropogenic foot
Data from: Broad-scale occurrence of a subsidized avian predator: reducing impacts of ravens on sage-grouse and other sensitive prey
Expanding human enterprise across remote environments impacts many wildlife species, including sage-grouse (Centrocercus urophasianus), an indicator species whose decline is at the center of national conservation strategies and land use policies. Anthropogenic resources provide subsidies for generalist predators, potentially leading to cascading effects on sensitive prey species at lower trophic l
Filter Total Items: 17
Spatial modeling of common raven density and occurrence helps guide landscape management within Great Basin sagebrush ecosystems
Common ravens (Corvus corax; ravens) are a behaviorally flexible nest predator of several avian species, including species of conservation concern. Movement patterns based on life history phases, particularly territoriality of breeding birds and transiency of nonbreeding birds, are thought to influence the frequency and efficacy of nest predation. As such, predicting where on the landscape territo
Authors
Sarah Catherine Webster, Shawn T. O'Neil, Brianne E. Brussee, Peter S. Coates, Pat J. Jackson, John C. Tull, David J. Delehanty
Sage-grouse population dynamics are adversely impacted by overabundant feral horses
In recent decades, feral horse (Equus caballus; horse) populations increased in sagebrush (Artimesia spp.) ecosystems, especially within the Great Basin, to the point of exceeding maximum appropriate management levels (AMLmax), which were set by land administrators to balance resource use by feral horses, livestock, and wildlife. Concomitantly, greater sage-grouse (Centrocercus urophasianus; sage-
Authors
Peter S. Coates, Shawn T. O'Neil, Diana A. Munoz, Ian Dwight, John C. Tull
Large-scale wildfire reduces population growth in a peripheral population of sage-grouse
Drastic increases in wildfire size and frequency threaten western North American sagebrush (Artemisia L. spp.) ecosystems. At relatively large spatial scales, wildfire facilitates type conversion of sagebrush-dominated plant communities to monocultures of invasive annual grasses (e.g., Bromus tectorum L.). Annual grasses provide fine fuels that promote fire spread, contributing to a positive grass
Authors
Ian F Dudley, Peter S. Coates, Brian G. Prochazka, Shawn T. O'Neil, Scott C. Gardner, David J. Delehanty
Nesting, brood rearing, and summer habitat selection by translocated greater sage‐grouse in North Dakota, USA
Human enterprise has led to large‐scale changes in landscapes and altered wildlife population distribution and abundance, necessitating efficient and effective conservation strategies for impacted species. Greater sage‐grouse (Centrocercus urophasianus; hereafter sage‐grouse) are a widespread sagebrush (Artemisia spp.) obligate species that has experienced population declines since the mid‐1900s r
Authors
Kade D. Lazenby, Peter S. Coates, Shawn T. O'Neil, Michel T. Kohl, David K. Dahlgren
Wildfire and the ecological niche: Diminishing habitat suitability for an indicator species within semi‐arid ecosystems
Globally accelerating frequency and extent of wildfire threatens the persistence of specialist wildlife species through direct loss of habitat and indirect facilitation of exotic invasive species. Habitat specialists may be especially prone to rapidly changing environmental conditions because their ability to adapt lags behind the rate of habitat alteration. As a result, these populations may beco
Authors
Shawn T. O'Neil, Peter S. Coates, Brianne E. Brussee, Mark A. Ricca, Shawn P. Espinosa, Scott C. Gardner, David J Delahanty
Science and Products
Filter Total Items: 14
Data maps of predicted raven density and areas of potential impact to nesting sage-grouse within sagebrush ecosystems of the North American Great Basin
These data represent predicted common raven (Corvus corax) density (ravens/square-km) derived from random forest models given field site unit-specific estimates of raven density that were obtained from hierarchical distance sampling models at 43 field site units within the Great Basin region, USA. Fifteen landscape-level predictors summarizing climate, vegetation, topography and anthropogenic foot
Data from: Broad-scale occurrence of a subsidized avian predator: reducing impacts of ravens on sage-grouse and other sensitive prey
Expanding human enterprise across remote environments impacts many wildlife species, including sage-grouse (Centrocercus urophasianus), an indicator species whose decline is at the center of national conservation strategies and land use policies. Anthropogenic resources provide subsidies for generalist predators, potentially leading to cascading effects on sensitive prey species at lower trophic l
Filter Total Items: 17
Spatial modeling of common raven density and occurrence helps guide landscape management within Great Basin sagebrush ecosystems
Common ravens (Corvus corax; ravens) are a behaviorally flexible nest predator of several avian species, including species of conservation concern. Movement patterns based on life history phases, particularly territoriality of breeding birds and transiency of nonbreeding birds, are thought to influence the frequency and efficacy of nest predation. As such, predicting where on the landscape territo
Authors
Sarah Catherine Webster, Shawn T. O'Neil, Brianne E. Brussee, Peter S. Coates, Pat J. Jackson, John C. Tull, David J. Delehanty
Sage-grouse population dynamics are adversely impacted by overabundant feral horses
In recent decades, feral horse (Equus caballus; horse) populations increased in sagebrush (Artimesia spp.) ecosystems, especially within the Great Basin, to the point of exceeding maximum appropriate management levels (AMLmax), which were set by land administrators to balance resource use by feral horses, livestock, and wildlife. Concomitantly, greater sage-grouse (Centrocercus urophasianus; sage-
Authors
Peter S. Coates, Shawn T. O'Neil, Diana A. Munoz, Ian Dwight, John C. Tull
Large-scale wildfire reduces population growth in a peripheral population of sage-grouse
Drastic increases in wildfire size and frequency threaten western North American sagebrush (Artemisia L. spp.) ecosystems. At relatively large spatial scales, wildfire facilitates type conversion of sagebrush-dominated plant communities to monocultures of invasive annual grasses (e.g., Bromus tectorum L.). Annual grasses provide fine fuels that promote fire spread, contributing to a positive grass
Authors
Ian F Dudley, Peter S. Coates, Brian G. Prochazka, Shawn T. O'Neil, Scott C. Gardner, David J. Delehanty
Nesting, brood rearing, and summer habitat selection by translocated greater sage‐grouse in North Dakota, USA
Human enterprise has led to large‐scale changes in landscapes and altered wildlife population distribution and abundance, necessitating efficient and effective conservation strategies for impacted species. Greater sage‐grouse (Centrocercus urophasianus; hereafter sage‐grouse) are a widespread sagebrush (Artemisia spp.) obligate species that has experienced population declines since the mid‐1900s r
Authors
Kade D. Lazenby, Peter S. Coates, Shawn T. O'Neil, Michel T. Kohl, David K. Dahlgren
Wildfire and the ecological niche: Diminishing habitat suitability for an indicator species within semi‐arid ecosystems
Globally accelerating frequency and extent of wildfire threatens the persistence of specialist wildlife species through direct loss of habitat and indirect facilitation of exotic invasive species. Habitat specialists may be especially prone to rapidly changing environmental conditions because their ability to adapt lags behind the rate of habitat alteration. As a result, these populations may beco
Authors
Shawn T. O'Neil, Peter S. Coates, Brianne E. Brussee, Mark A. Ricca, Shawn P. Espinosa, Scott C. Gardner, David J Delahanty