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
Declines revisited: Long-term recovery and spatial population dynamics oftailed frog larvae after wildfire
Drought has fueled an increased frequency and severity of large wildfires in many ecosystems. Despite an increase in research on wildfire effects on vertebrates, the vast majority of it has focused on short-term (< 5 years) effects and there is still little information on the time scale of population recovery for species that decline in abundance after fire. In 2003, a large wildfire in Montana (U
Authors
Blake R. Hossack, R. Ken Honeycutt
Widespread legacy brine contamination from oil production reduces survival of chorus frog larvae
Advances in drilling techniques have facilitated a rapid increase in hydrocarbon extraction from energy shales, including the Williston Basin in central North America. This area overlaps with the Prairie Pothole Region, a region densely populated with wetlands that provide numerous ecosystem services. Historical (legacy) disposal practices often released saline co-produced waters (brines) with hig
Authors
Blake R. Hossack, Holly J. Puglis, William A. Battaglin, Chauncey W. Anderson, R. Ken Honeycutt, Kelly L. Smalling
Introduced American Bullfrog distribution and diets in Grand Teton National Park
Introduced American Bullfrogs (Lithobates catesbeianus) have been present in Grand Teton National Park since approximately the 1950s, but little is known about their distribution and potential impacts. In this study, we surveyed the current bullfrog distribution and spatial overlap with sympatric native amphibians in the park, and characterized post-metamorphic bullfrog diets from July – September
Authors
Lauren M Flynn, Tess Marie Kreofsky, Adam J. Sepulveda
No evidence for ecological segregation protecting native trout from invasive hybridization
We appreciate the comments of Young et al. (2017) on our recent paper (Muhlfeld et al., 2017) concerning spatiotemporal dynamics of hybridization between native westslope cutthroat trout (Oncorhynchus clarkii lewisi; WCT) and introduced coastal rainbow trout (Oncorhynchus mykiss irideus; RBT). Nevertheless, we believe there is no evidence for “ecological segregation” protecting WCT from hybridizat
Authors
Ryan Kovach, Clint C. Muhlfeld, Robert K. Al-Chokhachy, Stephen J. Amish, Jeffrey L. Kershner, Robb F. Leary, Winsor H. Lowe, Gordon Luikart, Phil Matson, David Schmetterling, Bradley Shepard, Peter A. H. Westley, Diane Whited, Andrew R. Whiteley, Fred W. Allendorf
Building collaboration between the North Central CSC and regional partners through liaison teams
The Liaison Project increased communications between the North CentralClimate Science Center (NC CSC), other USGS Science Centers and potential collaboratorsincluding active members of the four Landscape Conservation Cooperatives (LCC) included inthe NC CSC area. The project was initiated with listening sessions to determine partners’ interestin liaising with the NC CSC, and USGS liaison proposals
Authors
Geneva W. Chong
Contact and contagion: Probability of transmission given contact varies with demographic state in bighorn sheep
Understanding both contact and probability of transmission given contact are key to managing wildlife disease. However, wildlife disease research tends to focus on contact heterogeneity, in part because the probability of transmission given contact is notoriously difficult to measure. Here, we present a first step towards empirically investigating the probability of transmission given contact in f
Authors
Kezia R. Manlove, E. Frances Cassirer, Raina K. Plowright, Paul C. Cross, Peter J. Hudson
Climate-induced trends in predator–prey synchrony differ across life-history stages of an anadromous salmonid
Differential climate-induced shifts in phenology can create mismatches between predators and prey, but few studies have examined predator–prey mismatch across multiple life-history stages. We used long-term data from a warming stream with shifting salmonid migration timings to quantify intra-annual migration synchrony between predatory Dolly Varden (Salvelinus malma) and Pacific salmon prey and ex
Authors
Donovan A. Bell, Ryan Kovach, Scott C. Vulstek, John E. Joyce, David A. Tallmon
A global multiproxy database for temperature reconstructions of the Common Era
Reproducible climate reconstructions of the Common Era (1 CE to present) are key to placing industrial-era warming into the context of natural climatic variability. Here we present a community-sourced database of temperature-sensitive proxy records from the PAGES2k initiative. The database gathers 692 records from 648 locations, including all continental regions and major ocean basins. The records
Authors
Julian Emile-Geay, Nicholas P. McKay, Darrell S. Kaufman, Lucien von Gunten, Jianghao Wang, Kevin J. Anchukaitis, Nerilie J. Abram, Jason A. Addison, Mark A.J. Curran, Michael N. Evans, Benjamin J. Henley, Zhixin Hao, Belen Martrat, Helen V. McGregor, Raphael Neukom, Gregory T. Pederson, Barbara Stenni, Kaustubh Thirumalai, Johannes P. Werner, Chenxi Xu, Dmitry V. Divine, Bronwyn C. Dixon, Joelle Gergis, Ignacio A. Mundo, T. Nakatsuka, Steven J. Phipps, Cody C. Routson, Eric J. Steig, Jessica E. Tierney, Jonathan J. Tyler, Kathryn J. Allen, Nancy A. N. Bertler, Jesper Bjorklund, Brian M. Chase, Min-Te Chen, Ed Cook, Rixt de Jong, Kristine L. DeLong, Daniel A. Dixon, Alexey A. Ekaykin, Vasile Ersek, Helena L. Filipsson, Pierre Francus, Mandy B. Freund, M. Frezzotti, Narayan P. Gaire, Konrad Gajewski, Quansheng Ge, Hugues Goosse, Anastasia Gornostaeva, Martin Grosjean, Kazuho Horiuchi, Anne Hormes, Katrine Husum, Elisabeth Isaksson, Selvaraj Kandasamy, Kenji Kawamura, Nalan Koc, Guillaume Leduc, Hans W. Linderholm, Andrew M. Lorrey, Vladimir Mikhalenko, P. Graham Mortyn, Hideaki Motoyama, Andrew D. Moy, Robert Mulvaney, Philipp M. Munz, David J. Nash, Hans Oerter, Thomas Opel, Anais J. Orsi, Dmitriy V. Ovchinnikov, Trevor J. Porter, Heidi Roop, Casey Saenger, Masaki Sano, David Sauchyn, K.M. Saunders, Marit-Solveig Seidenkrantz, Mirko Severi, X. Shao, Marie-Alexandrine Sicre, Michael Sigl, Kate Sinclair, Scott St. George, Jeannine-Marie St. Jacques, Meloth Thamban, Udya Kuwar Thapa, E. Thomas, Chris Turney, Ryu Uemura, A.E. Viau, Diana O. Vladimirova, Eugene Wahl, James W. C. White, Z. Yu, Jens Zinke
Biological and ecological science for Montana—The Treasure State
Montana is rich in minerals, energy, and soils, as well as prairies, forests, mountains, rivers, lakes, fish, and wildlife. Many enterprises that drive the economy are based on natural resources, including tourism, hunting, fishing, agriculture, and energy development. The outdoor-recreation economy alone supports 64,000 Montana jobs and generates nearly \$6 billion each year in economic activity.
Authors
Behavioral flexibility as a mechanism for coping with climate change
Of the primary responses to contemporary climate change – “move, adapt, acclimate, or die” – that are available to organisms, “acclimate” may be effectively achieved through behavioral modification. Behavioral flexibility allows animals to rapidly cope with changing environmental conditions, and behavior represents an important component of a species’ adaptive capacity in the face of climate chang
Authors
Erik A. Beever, L. Embere Hall, Johanna Varner, Anne E. Loosen, Jason B. Dunham, Megan K. Gahl, Felisa A. Smith, Joshua J. Lawler
Life history migrations of adult Yellowstone Cutthroat Trout in the upper Yellowstone River
Knowledge of salmonid life history types at the watershed scale is increasingly recognized as a cornerstone for effective management. In this study, we used radiotelemetry to characterize the life history movements of Yellowstone Cutthroat Trout Oncorhynchus clarkii bouvieri in the upper Yellowstone River, an extensive tributary that composes nearly half of the drainage area of Yellowstone Lake. I
Authors
Brian D. Ertel, Thomas E. McMahon, Todd M. Koel, Robert E. Gresswell, Jason Burckhardt