Shawn T O'Neil, PhD
Shawn O'Neil is a wildlife biologist at the USGS Western Ecological Research Center.
Science and Products
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SMaRT: A science-based tiered framework for common ravens SMaRT: A science-based tiered framework for common ravens
Large-scale increases and expansion of common raven (Corvus corax; raven) populations are occurring across much of North America, leading to increased negative consequences for livestock and agriculture, human health and safety, and sensitive species conservation. We describe a science-based adaptive management framework that incorporates recent quantitative analyses and mapping products...
Authors
Seth J. Dettenmaier, Peter S. Coates, Cali L. Roth, Sarah C. Webster, Shawn T. O’Neil, Kerry L. Holcomb, John C. Tull, Pat J. Jackson
A rapid assessment function to estimate common raven population densities: Implications for targeted management A rapid assessment function to estimate common raven population densities: Implications for targeted management
Common raven (Corvus corax; raven) populations have increased over the past 5 decades within the western United States. Raven population increases have been largely attributed to growing resource subsidies from expansion of human enterprise. Concomitantly, managers are becoming increasingly concerned about elevated adverse effects on multiple sensitive prey species, damage to livestock...
Authors
Brianne E. Brussee, Peter S. Coates, Shawn T. O’Neil, Seth J. Dettenmaier, Pat J. Jackson, Kristy B. Howe, David J. Delehanty
Inter- and intra-annual effects of lethal removal on common raven abundance in Nevada and California, USA Inter- and intra-annual effects of lethal removal on common raven abundance in Nevada and California, USA
Populations of common ravens (Corvus corax; ravens) have increased rapidly within sagebrush (Artemisia spp.) ecosystems between 1960 and 2020. Although ravens are native to North America, their population densities have expanded to levels that negatively influence the population dynamics of other wildlife species of conservation concern, such as greater sage-grouse (Centrocercus...
Authors
Shawn T. O’Neil, Peter S. Coates, Julia C. Brockman, Pat J. Jackson, Jack O. Spencer, Perry J. Williams
Spatial modeling of common raven density and occurrence helps guide landscape management within Great Basin sagebrush ecosystems 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...
Authors
Sarah C. 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 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...
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 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...
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 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...
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 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...
Authors
Shawn T. O’Neil, Peter S. Coates, Brianne E. Brussee, Mark A. Ricca, Shawn P. Espinosa, Scott C. Gardner, David J Delahanty
Broad-scale impacts of an invasive native predator on a sensitive native prey species within the shifting avian community of the North American Great Basin Broad-scale impacts of an invasive native predator on a sensitive native prey species within the shifting avian community of the North American Great Basin
Human enterprise has modified ecosystem processes through direct and indirect alteration of native predators’ distribution and abundance. For example, human activities subsidize food, water, and shelter availability to generalist predators whose subsequent increased abundance impacts lower trophic-level prey species. The common raven (Corvus corax; hereafter, raven) is an avian predator...
Authors
Peter S. Coates, Shawn O'Neil, Brianne E. Brussee, Mark A. Ricca, Pat J. Jackson, Jonathan B. Dinkins, Kristy B. Howe, Ann M. Moser, Lee J. Foster, David J Delahunty
Population and habitat analyses for greater sage-grouse (Centrocercus urophasianus) in the bi-state distinct population segment—2018 update Population and habitat analyses for greater sage-grouse (Centrocercus urophasianus) in the bi-state distinct population segment—2018 update
Executive Summary The Bi-State Distinct Population Segment (Bi-State DPS) of greater sage-grouse (Centrocercus urophasianus, hereinafter “sage-grouse”) represents a genetically distinct and geographically isolated population that straddles the border between Nevada and California. The primary threat to these sage-grouse populations is the expansion of single-leaf pinyon (Pinus monophylla...
Authors
Peter S. Coates, Mark A. Ricca, Brian G. Prochazka, Shawn T. O’Neil, John P. Severson, Steven R. Mathews, Shawn Espinosa, Scott Gardner, Sherri Lisius, David J. Delehanty
Broad‐scale occurrence of a subsidized avian predator: reducing impacts of ravens on sage‐grouse and other sensitive prey 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 numerous wildlife species. Anthropogenic resources provide subsidies for generalist predators that can lead to cascading effects on prey species at lower trophic levels. A fundamental challenge for applied ecologists is to disentangle natural and anthropogenic influences on species occurrence, and subsequently develop...
Authors
Shawn T. O’Neil, Peter S. Coates, Brianne E. Brussee, Pat J. Jackson, Kristy B. Howe, Ann M. Moser, Lee J. Foster, David J. Delehanty
Habitat selection by postbreeding female diving ducks: Influence of habitat attributes and conspecifics Habitat selection by postbreeding female diving ducks: Influence of habitat attributes and conspecifics
Habitat selection studies of postbreeding waterfowl have rarely focused on within-wetland attributes such as water depth, escape cover, and food availability. Flightless waterfowl must balance habitat selection between avoiding predation risks and feeding. Reproductively successful female ducks face the greatest challenges because they begin the definitive prebasic molt at or near the...
Authors
Jane E. Austin, Shawn T. O’Neil, Jeffrey M. Warren
Science and Products
Filter Total Items: 21
No Result Found
Filter Total Items: 37
SMaRT: A science-based tiered framework for common ravens SMaRT: A science-based tiered framework for common ravens
Large-scale increases and expansion of common raven (Corvus corax; raven) populations are occurring across much of North America, leading to increased negative consequences for livestock and agriculture, human health and safety, and sensitive species conservation. We describe a science-based adaptive management framework that incorporates recent quantitative analyses and mapping products...
Authors
Seth J. Dettenmaier, Peter S. Coates, Cali L. Roth, Sarah C. Webster, Shawn T. O’Neil, Kerry L. Holcomb, John C. Tull, Pat J. Jackson
A rapid assessment function to estimate common raven population densities: Implications for targeted management A rapid assessment function to estimate common raven population densities: Implications for targeted management
Common raven (Corvus corax; raven) populations have increased over the past 5 decades within the western United States. Raven population increases have been largely attributed to growing resource subsidies from expansion of human enterprise. Concomitantly, managers are becoming increasingly concerned about elevated adverse effects on multiple sensitive prey species, damage to livestock...
Authors
Brianne E. Brussee, Peter S. Coates, Shawn T. O’Neil, Seth J. Dettenmaier, Pat J. Jackson, Kristy B. Howe, David J. Delehanty
Inter- and intra-annual effects of lethal removal on common raven abundance in Nevada and California, USA Inter- and intra-annual effects of lethal removal on common raven abundance in Nevada and California, USA
Populations of common ravens (Corvus corax; ravens) have increased rapidly within sagebrush (Artemisia spp.) ecosystems between 1960 and 2020. Although ravens are native to North America, their population densities have expanded to levels that negatively influence the population dynamics of other wildlife species of conservation concern, such as greater sage-grouse (Centrocercus...
Authors
Shawn T. O’Neil, Peter S. Coates, Julia C. Brockman, Pat J. Jackson, Jack O. Spencer, Perry J. Williams
Spatial modeling of common raven density and occurrence helps guide landscape management within Great Basin sagebrush ecosystems 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...
Authors
Sarah C. 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 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...
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 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...
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 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...
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 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...
Authors
Shawn T. O’Neil, Peter S. Coates, Brianne E. Brussee, Mark A. Ricca, Shawn P. Espinosa, Scott C. Gardner, David J Delahanty
Broad-scale impacts of an invasive native predator on a sensitive native prey species within the shifting avian community of the North American Great Basin Broad-scale impacts of an invasive native predator on a sensitive native prey species within the shifting avian community of the North American Great Basin
Human enterprise has modified ecosystem processes through direct and indirect alteration of native predators’ distribution and abundance. For example, human activities subsidize food, water, and shelter availability to generalist predators whose subsequent increased abundance impacts lower trophic-level prey species. The common raven (Corvus corax; hereafter, raven) is an avian predator...
Authors
Peter S. Coates, Shawn O'Neil, Brianne E. Brussee, Mark A. Ricca, Pat J. Jackson, Jonathan B. Dinkins, Kristy B. Howe, Ann M. Moser, Lee J. Foster, David J Delahunty
Population and habitat analyses for greater sage-grouse (Centrocercus urophasianus) in the bi-state distinct population segment—2018 update Population and habitat analyses for greater sage-grouse (Centrocercus urophasianus) in the bi-state distinct population segment—2018 update
Executive Summary The Bi-State Distinct Population Segment (Bi-State DPS) of greater sage-grouse (Centrocercus urophasianus, hereinafter “sage-grouse”) represents a genetically distinct and geographically isolated population that straddles the border between Nevada and California. The primary threat to these sage-grouse populations is the expansion of single-leaf pinyon (Pinus monophylla...
Authors
Peter S. Coates, Mark A. Ricca, Brian G. Prochazka, Shawn T. O’Neil, John P. Severson, Steven R. Mathews, Shawn Espinosa, Scott Gardner, Sherri Lisius, David J. Delehanty
Broad‐scale occurrence of a subsidized avian predator: reducing impacts of ravens on sage‐grouse and other sensitive prey 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 numerous wildlife species. Anthropogenic resources provide subsidies for generalist predators that can lead to cascading effects on prey species at lower trophic levels. A fundamental challenge for applied ecologists is to disentangle natural and anthropogenic influences on species occurrence, and subsequently develop...
Authors
Shawn T. O’Neil, Peter S. Coates, Brianne E. Brussee, Pat J. Jackson, Kristy B. Howe, Ann M. Moser, Lee J. Foster, David J. Delehanty
Habitat selection by postbreeding female diving ducks: Influence of habitat attributes and conspecifics Habitat selection by postbreeding female diving ducks: Influence of habitat attributes and conspecifics
Habitat selection studies of postbreeding waterfowl have rarely focused on within-wetland attributes such as water depth, escape cover, and food availability. Flightless waterfowl must balance habitat selection between avoiding predation risks and feeding. Reproductively successful female ducks face the greatest challenges because they begin the definitive prebasic molt at or near the...
Authors
Jane E. Austin, Shawn T. O’Neil, Jeffrey M. Warren