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Publications

Below is a list of available NOROCK peer reviewed and published science. If you are in search of a specific publication and cannot find it below or through a search, please contact twojtowicz@usgs.gov.

Filter Total Items: 1308

Assembling evidence for identifying reservoirs of infection Assembling evidence for identifying reservoirs of infection

Many pathogens persist in multihost systems, making the identification of infection reservoirs crucial for devising effective interventions. Here, we present a conceptual framework for classifying patterns of incidence and prevalence, and review recent scientific advances that allow us to study and manage reservoirs simultaneously. We argue that interventions can have a crucial role in...
Authors
Mafalda Viana, Rebecca Mancy, Roman Biek, Sarah Cleaveland, Paul C. Cross, James O. Lloyd-Smith, Daniel T. Haydon

Prevalence of the amphibian chytrid fungus (Batrachochytrium dendrobatidis) at Buenos Aires National Wildlife Refuge, Arizona, USA Prevalence of the amphibian chytrid fungus (Batrachochytrium dendrobatidis) at Buenos Aires National Wildlife Refuge, Arizona, USA

Information on disease presence can be of use to natural resource managers, especially in areas supporting threatened and endangered species that occur coincidentally with species that are suspected vectors for disease. Ad hoc reports may be of limited utility (Muths et al. 2009), but a general sense of pathogen presence (or absence) can inform management directed at T&E species...
Authors
Brent H. Sigafus, Blake R. Hossack, Erin L. Muths, Cecil R. Schwalbe

Costs and benefits of group living with disease: a case study of pneumonia in bighorn lambs (Ovis canadensis) Costs and benefits of group living with disease: a case study of pneumonia in bighorn lambs (Ovis canadensis)

Group living facilitates pathogen transmission among social hosts, yet temporally stable host social organizations can actually limit transmission of some pathogens. When there are few between-subpopulation contacts for the duration of a disease event, transmission becomes localized to subpopulations. The number of per capita infectious contacts approaches the subpopulation size as...
Authors
Kezia R. Manlove, E. Frances Cassirer, Paul C. Cross, Raina K. Plowright, Peter J. Hudson

A multi-scale assessment of animal aggregation patterns to understand increasing pathogen seroprevalence A multi-scale assessment of animal aggregation patterns to understand increasing pathogen seroprevalence

Understanding how animal density is related to pathogen transmission is important to develop effective disease control strategies, but requires measuring density at a scale relevant to transmission. However, this is not straightforward or well-studied among large mammals with group sizes that range several orders of magnitude or aggregation patterns that vary across space and time. To...
Authors
Angela K. Brennan, Paul C. Cross, Megan D. Higgs, W. Henry Edwards, Brandon M. Scurlock, Scott Creel

Assessing the risk persistent drought using climate model simulations and paleoclimate data Assessing the risk persistent drought using climate model simulations and paleoclimate data

Projected changes in global rainfall patterns will likely alter water supplies and ecosystems in semiarid regions during the coming century. Instrumental and paleoclimate data indicate that natural hydroclimate fluctuations tend to be more energetic at low (multidecadal to multicentury) than at high (interannual) frequencies. State-of-the-art global climate models do not capture this
Authors
Toby R. Ault, Julia E. Cole, Jonathan T. Overpeck, Gregory T. Pederson, David M. Meko

Bird mortality during nocturnal migration over Lake Michigan: A case study Bird mortality during nocturnal migration over Lake Michigan: A case study

Millions of birds die each year during migration. Most of this mortality goes unobserved and conditions surrounding the actual events are often not thoroughly documented. We present a case study of substantial migrant casualties along the shores of southwestern Lake Michigan during May 1996 when we found 2,981 dead birds of 114 species, mostly migrant passerines. An unusual sequence of...
Authors
Robert H. Diehl, John M. Bates, David E. Willard, Thomas P. Gnoske

Predicting foundation bunchgrass species abundances: Model-assisted decision-making in protected-area sagebrush steppe Predicting foundation bunchgrass species abundances: Model-assisted decision-making in protected-area sagebrush steppe

Foundation species are structurally dominant members of ecological communities that can stabilize ecological processes and influence resilience to disturbance and resistance to invasion. Being common, they are often overlooked for conservation but are increasingly threatened from land use change, biological invasions, and over-exploitation. The pattern of foundation species abundances...
Authors
Thomas J. Rodhouse, Kathryn M. Irvine, Roger L. Sheley, Brenda S. Smith, Shirley Hoh, Daniel M. Esposito, Ricardo Mata-Gonzalez

Annual variation of spawning Cutthroat Trout in a small Western USA stream: A case study with implications for the conservation of potamodromous trout life history diversity Annual variation of spawning Cutthroat Trout in a small Western USA stream: A case study with implications for the conservation of potamodromous trout life history diversity

Little is known about the variability in the spatial and temporal distribution of spawning potamodromous trout despite decades of research directed at salmonid spawning ecology and the increased awareness that conserving life history diversity should be a focus of management. We monitored a population of fluvial–resident Bonneville Cutthroat Trout Oncorhynchus clarkii utah in a tributary...
Authors
Stephen Bennett, Robert K. Al-Chokhachy, Brett B. Roper, Phaedra E. Budy

Rancher and farmer quality of life in the midst of energy development in southwest Wyoming Rancher and farmer quality of life in the midst of energy development in southwest Wyoming

Quality of life (QOL) is usually defined as a person’s general well-being, and may include individual perceptions of a variety of factors such family, work, finances, local community services, community relationships, surrounding environment, and other important aspects of their life, ultimately leading to life satisfaction. Energy development can have an effect on QOL components for...
Authors
Leslie Allen, Jessica Montag, Katie Lyon, Suzanna Soileau, Rudy Schuster

Use of isotopic sulfur to determine whitebark pine consumption by Yellowstone bears: a reassessment Use of isotopic sulfur to determine whitebark pine consumption by Yellowstone bears: a reassessment

Use of naturally occurring stable isotopes to estimate assimilated diet of bears is one of the single greatest breakthroughs in nutritional ecology during the past 20 years. Previous research in the Greater Yellowstone Ecosystem (GYE), USA, established a positive relationship between the stable isotope of sulfur (δ34S) and consumption of whitebark pine (Pinus albicaulis) seeds. That work...
Authors
Charles C. Schwartz, Justin E. Teisberg, Jennifer K. Fortin, Mark A. Haroldson, Christopher Servheen, Charles T. Robbins, Frank T. van Manen

Combining demographic and genetic factors to assess population vulnerability in stream species Combining demographic and genetic factors to assess population vulnerability in stream species

Accelerating climate change and other cumulative stressors create an urgent need to understand the influence of environmental variation and landscape features on the connectivity and vulnerability of freshwater species. Here, we introduce a novel modeling framework for aquatic systems that integrates spatially explicit, individual‐based, demographic and genetic (demogenetic) assessments...
Authors
Erin L. Landguth, Clint C. Muhlfeld, Leslie W. Jones, Robin S. Waples, Diane Whited, Winsor H. Lowe, John Lucotch, Helen Neville, Gordon Luikart

Partitioning the non‑consumptive effects of predators on preywith complex life histories Partitioning the non‑consumptive effects of predators on preywith complex life histories

Non-consumptive effects (NCEs) of predators on prey can be as strong as consumptive effects (CEs) and may be driven by numerous mechanisms, including predator characteristics. Previous work has highlighted the importance of predator characteristics in predicting NCEs, but has not addressed how complex life histories of prey could mediate predator NCEs. We conducted a meta-analysis to...
Authors
Jon M. Davenport, Blake R. Hossack, Winsor H. Lowe
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