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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: 1211

Sarcoptic mange: An emerging panzootic in wildlife

Sarcoptic mange, a skin infestation caused by the mite Sarcoptes scabiei, is an emerging disease for some species of wildlife, potentially jeopardizing their welfare and conservation. Sarcoptes scabiei has a near-global distribution facilitated by its forms of transmission and use of a large diversity of host species (many of those with broad geographic distribution). In this review, we synthesize
Authors
L. E. Escobar, Scott Carver, Paul C. Cross, Luca Rossi, E. S. Almberg, M. J. Yabsley, K D Niedringhaus, Peach Van Wick, Ernesto Dominguez-Villegas, F.F. Gakuya, Yue Xie, Samer Angelone, Christian Gortázar, Francisca Astorga

Enumerating white-tailed deer using unmanned aerial vehicles

The white‐tailed deer (Odocoileus virginianus) is an ecologically important species in forests of North America. Effective management of forests requires accurate, precise estimates of deer population abundance to plan and justify management actions. Spotlight surveys in combination with distance sampling are a common method of estimating deer population abundance; however, spotlight surveys are k
Authors
Todd M. Preston, Mark L. Wildhaber, Nicholas S. Green, Janice L. Albers, Geoffrey P. Debenedetto

Integrating environmental DNA results with diverse data sets to improve biosurveillance of river health

Autonomous, robotic environmental (e)DNA samplers now make it possible for biological observations to match the scale and quality of abiotic measurements collected by automated sensor networks. Merging these automated data streams may allow for improved insight into biotic responses to environmental change and stressors. Here, we merged eDNA data collected by robotic samplers installed at three U.
Authors
Adam Sepulveda, Andrew B. Hoegh, Joshua A. Gage, Sara L. Caldwell Eldridge, James M. Birch, Christian Stratton, Patrick R. Hutchins, Elliott Barnhart

The smell of success: Reproductive success related to rub behavior in brown bears

Several species of bears are known to rub deliberately against trees and other objects, but little is known about why bears rub. Patterns in rubbing behavior of male and female brown bears (Ursus arctos) suggest that scent marking via rubbing functions to communicate among potential mates or competitors. Using DNA from bear hairs collected from rub objects in southwestern Alberta from 2011–2014 an
Authors
Andrea T. Morehouse, Anne E. Loosen, Tabitha Graves, Mark S. Boyce

Genomic association with pathogen carriage in bighorn sheep (Ovis canadensis)

Genetic composition can influence host susceptibility to, and transmission of, pathogens, with potential population‐level consequences. In bighorn sheep (Ovis canadensis), pneumonia epidemics caused by Mycoplasma ovipneumoniae have been associated with severe population declines and limited recovery across North America. Adult survivors either clear the infection or act as carriers that continuall
Authors
Alynn Martin, E. Frances Cassirer, Lisette P. Waits, Raina K. Plowright, Paul C. Cross, Kimberly R. Andrews

Accommodating the role of site memory in dynamic species distribution models

First-order dynamic occupancy models (FODOMs) are a class of state-space model in which the true state (occurrence) is observed imperfectly. An important assumption of FODOMs is that site dynamics only depend on the current state and that variations in dynamic processes are adequately captured with covariates or random effects. However, it is often difficult to understand and/or measure the covari
Authors
Graziella Vittoria Direnzo, David A. W. Miller, Blake R. Hossack, Brent H. Sigafus, Paige E. Howell, Erin L. Muths, Evan H. Campbell Grant

Elk migration influences the risk of disease spillover in the Greater Yellowstone Ecosystem

Wildlife migrations provide important ecosystem services, but they are declining. Within the Greater Yellowstone Ecosystem (GYE) some elk (Cervus canadensis) herds are losing migratory tendencies, which may increase spatiotemporal overlap between elk and livestock (domestic bison [Bison bison] and cattle [Bos taurus]), potentially exacerbating pathogen transmission risk.We combined disease, moveme
Authors
Nathaniel D. Rayl, Jerod Merkle, Kelly Proffitt, E. S. Almberg, Jennifer D. Jones, Justin Gude, Paul C. Cross

Foreword

No abstract available.
Authors
Frank T. van Manen

Towards an urgent yet deliberate conservation strategy: Sustaining social-ecological systems in rangelands of the Northern Great Plains, Montana

Urgency and deliberateness are often at odds when executing conservation projects, especially as the scale and complexity of objectives increases. The pace of environmental degradation supports immediate and measurable action. However, best practices for adaptive governance and building resilient social-ecological systems call for more deliberate efforts and participatory processes, which can be s
Authors
Katie Epstein, David J. A. Wood, Kelli Roemer, Bryce Currey, Hannah Duff, Justin D Gay, Hannah Goemann, Sasha Loewen, Megan C Milligan, John A F Wendt, E N Jack Brookshire, Bruce D. Maxwell, Lance B. McNew, Dave B McWethy, Paul C. Stoy, Julia Hobson Haggerty

The interactive effects of stream temperature, stream size, and non-native species on Yellowstone cutthroat trout

Climate change and non-native species are considered two of the biggest threats to native salmonids in North America. We evaluated how non-native salmonids and stream temperature and discharge were associated with Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri) distribution, abundance, and body size to gain a more complete understanding of the existing threats to native populations. Al
Authors
Robert K. Al-Chokhachy, Michael Lien, Bradley B. Shepard, Brett High

Patterns and processes of pathogen exposure in gray wolves across North America

The presence of many pathogens varies in a predictable manner with latitude, with infections decreasing from the equator towards the poles. We investigated the geographic trends of pathogens infecting a widely distributed carnivore: the gray wolf (Canis lupus). Specifically, we investigated which variables best explain and predict geographic trends in seroprevalence across North American wolf popu
Authors
E. E. Brandell, Paul C. Cross, Meggan E. Craft, Douglas W. Smith, E. J. Dubovi, Marie L. J. Gilbertson, Tyler Wheeldon, John A. Stephenson, Shannon Barber-Meyer, B. L. Borg, Mathew Sorum, Daniel R. Stahler, Allicia P Kelly, Morgan Anderson, H. D. Cluff, Daniel R. MacNulty, David L. Watts, G. Roffler, Helen M. Schwantje, Mark Hebblewhite, K. Beckman, P. J. Hudson

A regional spatio-temporal analysis of large magnitude snow avalanches using tree rings

Snow avalanches affect transportation corridors and settlements worldwide. In many mountainous regions, robust records of avalanche frequency and magnitude are sparse or non-existent. However, dendrochronological methods can be used to fill this gap and infer historical avalanche patterns. In this study, we developed a tree-ring-based avalanche chronology for large magnitude avalanche events (size
Authors
Erich Peitzsch, Jordy Hendrikx, Daniel Kent Stahle, Gregory T. Pederson, Karl W. Birkeland, Daniel B. Fagre