Northern Rocky Mountain Science Center

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: 987
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Year Published: 2019

Genetic structure of Mycoplasma ovipneumoniae informs pathogen spillover dynamics between domestic and wild Caprinae in the western United States

Spillover diseases have significant consequences for human and animal health, as well as wildlife conservation. We examined spillover and transmission of the pneumonia-associated bacterium Mycoplasma ovipneumoniae in domestic sheep, domestic goats, bighorn sheep, and mountain goats across the western United States using 594 isolates,...

Kamath, Pauline; Manlove, K.R.; Cassirer, E. Frances; Cross, Paul; Besser, T. E.

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Year Published: 2019

1200 years of Upper Missouri River streamflow reconstructed from tree rings

Paleohydrologic records can provide unique, long-term perspectives on streamflow variability and hydroclimate for use in water resource planning. Such long-term records can also play a key role in placing both present day events and projected future conditions into a broader context than that offered by instrumental observations. However,...

Martin, Justin; Pederson, Gregory T.; Woodhouse, Connie A.; Cook, Edward R; McCabe, Gregory J.; Wise, Erika K.; Erger, Patrick; Dolan, Larry; McGuire, Marketa; Gangopadhyay, Subhrendu; Chase, Katherine J.; Littell, Jeremy S.; Gray, Stephen; St. George, Scott; Friedman, Jonathan M.; Sauchyn, David J.; St. Jacques, Jannine; King, John W.

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Year Published: 2019

Application of a regional climate model to assess changes in the climatology of the Eastern US and Cuba associated with historic landcover change

We examine the annual, seasonal, monthly, and diurnal climate responses to the land use change (LUC) in eastern United States and Cuba during four epochs (1650, 1850, 1920, and 1992) with ensemble simulations conducted with the RegCM4 regional climate model that includes the Biosphere Atmosphere Transfer Scheme (BATS1e) surface physics package (...

Hostetler, Steven W.; Reker, R; Alder, Jay R.; Loveland, Thomas; Willard, Debra A.; Bernhardt, Christopher E.; Sundquist, Eric T.; Thompson, Renee L.

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Year Published: 2019

Research Note: How old are the people who die in avalanches? A look into the ages of avalanche victims in the United States (1950-2018)

Since the winter of 1950-1951, 1084 individuals perished in snow avalanches in the United States. In this study, we analyze the ages of those killed (n=900) by applying non-parametric methods to annual median ages and for age groups and primary activity groups. Change point detection results suggest a significant change in 1990 in the median age...

Peitzsch, Erich; Boilen, Sara; Birkeland, Karl W.; Logan, Spencer

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Year Published: 2019

The Yellowstone River fish-kill: Fish health informs and is informed by vital signs monitoring

Trout are socioeconomically and ecologically important in the Greater Yellowstone Area (GYA); yet these fish face numerous threats. Disease may begin to play a larger role in reducing fish populations, partly because many existing threats may interact to exacerbate the frequency, extent, and severity of fish diseases (Lafferty 2009). For example,...

Hutchins, Patrick R.; Sepulveda, Adam J.; Hopper, Lacey R.; Staigmiller, Ken

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Year Published: 2019

Yellowstone Grizzly Bear investigations: Annual report of the Interagency Grizzly Bear Study Team 2018

This annual report summarizes the results of grizzly bear (Ursus arctos) research and monitoring conducted in the Greater Yellowstone Ecosystem (GYE) by the Interagency Grizzly Bear Study Team (IGBST) during 2018. The research and monitoring program is focused on population estimation and demographics, food monitoring, and habitat monitoring. The...

van Manen, Frank T.; Haroldson, Mark A.; Karabensh, Bryn
F. T. van Manen, M. A. Haroldson, and B. E. Karabensh, editors. Yellowstone grizzly bear investigations: annual report of the Interagency Grizzly Bear Study Team, 2018. U.S. Geological Survey, Bozeman, Montana, USA.

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Year Published: 2019

Consistent compensatory growth offsets poor condition in trout populations

1. Compensatory growth – when individuals in poor condition grow rapidly to “catch up” to conspecifics – may be a mechanism that allows individuals to tolerate stressful environmental conditions, both abiotic and biotic. This phenomenon has been documented fairly widely in laboratory and field experiments, but evidence for compensatory growth in...

Al-Chokhachy, Robert; Kovach, Ryan; Sepulveda, Adam J.; Strait, Jeff; Shepard, Bradley B.; Muhlfeld, Clint C.

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Year Published: 2019

Evidence of region‐wide bat population decline from long‐term monitoring and Bayesian occupancy models with empirically informed priors

Strategic conservation efforts for cryptic species, especially bats, are hindered by limited understanding of distribution and population trends. Integrating long‐term encounter surveys with multi‐season occupancy models provides a solution whereby inferences about changing occupancy probabilities and latent changes in abundance can be supported....

Thomas J. Rodhouse; Rogelio M. Rodriguez; Katharine M. Banner; Patricia C. Ormsbee; Jenny Barnett; Irvine, Kathryn

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Year Published: 2019

Drought-mediated extinction of an arid-land amphibian: Insights from a spatially explicit dynamic occupancy model

Understanding how natural and anthropogenic processes affect population dynamics of species with patchy distributions is critical to predicting their responses to environmental changes. Despite considerable evidence that demographic rates and dispersal patterns vary temporally in response to an array of biotic and abiotic processes, few...

Muths, Erin L.; Zylstra, Erin R; Swann, Don E; Hossack, Blake R.; Steidl, Robert J

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Year Published: 2019

Discovery of the yellow-bellied marmot (Marmota flaviventris) in the Jemez Mountains, New Mexico: Examining competing hypotheses for range extension

The yellow-bellied marmot (Marmota flaviventris) reaches the southern edge of its geographic range in New Mexico, where it is known from the San Juan and Sangre de Cristo Mountains. We provide a synopsis of the geographic range of M. flaviventris in New Mexico and report 5 recent records from the Jemez Mountains, Los Alamos and Sandoval...

Frey, Jennifer K.; Beever, Erik A.; Hathcock, Charles D; Parmenter, Robert; Westover, Marie L

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Year Published: 2019

North American Bat Monitoring Program regional protocol for surveying with stationary deployments of echolocation recording devices: Narrative version 1.0, Pacific Northwestern US

The outbreak of white-nose syndrome (WNS) and the growing awareness of the risks to bats from wind power generating facilities have driven radical changes to North American bat conservation. Over the last decade, formerly common species such as the little brown myotis (Myotis lucifugus) and hoary bat (Lasiurus cinereus) have experienced...

Rogelio M. Rodriguez; Thomas J. Rodhouse; Jenny Barnett; Irvine, Kathryn; Katharine M. Banner; Jeff Lonneker; Patricia C. Ormsbee

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Year Published: 2019

Restoring a forest icon: Could returning the American chestnut remodel our wildlife landscape?

Mother Nature was not making it easy. It was February 18, 2009, and winds were gusting, sleet was falling, and temperatures were hovering around 40° F. Our crew of 9 which consisted of personnel from the USDA Forest Service Southern Research Station, the Cherokee National Forest, and The University of Tennessee’s Tree Improvement Program, was...

Clark, Staci L; Schlarbaum, Scott E.; Clark, Joseph D.