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.
Thermal constraints on energy balance, behaviour and spatial distribution of grizzly bears
1. Heat dissipation limit theory posits that energy available for growth and reproduction in endotherms is limited by their ability to dissipate heat. In mammals, endogenous heat production increases markedly during gestation and lactation, and thus female mammals may be subject to greater thermal constraints on energy expenditure than males. Such...
Rogers, Savannah A.; Robbins, Charlie T.; Mathewson, Paul D.; Carnahan, Anthony M.; van Manen, Frank T.; Haroldson, Mark A.; Porter, Warren P.; Rogers, Taylor R.; Soule, Terrence; Long, Ryan A. An evaluation of noninvasive sampling techniques for Malayan sun bears
Traditional mark–recapture studies to estimate abundance and trends of Malayan sun bear (Helarctos malayanus) populations are impeded by logistics of live-trapping wild individuals. The development of noninvasive sampling techniques for monitoring sun bear populations is therefore crucial for targeted conservation action. Sun bears have short fur...
Tee, Thye Lim; Lai, Wai Ling; Ju Wei, Terence Kok; Shern, Ooi Zhuan; van Manen, Frank T.; Sharp, Stuart P.; Wong, Siew Te; Chew, Jactty; Ratnayeke, Shyamala Brown Bear (Ursus arctos; North America)
This chapter comprises the following sections: names, taxonomy, subspecies and distribution, descriptive notes, habitat, movements and home range, activity patterns, feeding ecology, reproduction and growth, behavior, parasites and diseases, status in the wild, and status in captivity.
Haroldson, Mark A.; Clapham, Melanie; Costello, Cecily M.; Gunther, Kerry A.; Kendall, Kate; Miller, Sterling; Pigeon, Karine; Proctor, Michael F.; Rode, Karyn D.; Servheen, Christopher; Stenhouse, Gordon; van Manen, Frank T. Ecological and social dimensions of sloth bear conservation in Sri Lanka
Balancing the needs of humans and wildlife in Sri Lanka presents enormous socioeconomic and conservation challenges. Sloth bears are legally protected, but attacks on humans generate intense fear, which increases the potential for human-caused bear mortality and local extirpation of bears. In this chapter, what is known about the ecology and human...
Ratnayeke, Shyamala; van Manen, Frank T. An interactive data visualization framework for exploring geospatial environmental datasets and model predictions
With the rise of large-scale environmental models comes new challenges for how we best utilize this information in research, management and decision making. Interactive data visualizations can make large and complex datasets easier to access and explore, which can lead to knowledge discovery, hypothesis formation and improved understanding. Here,...
Walker, Jeffrey D; Letcher, Benjamin; Rodgers, Kirk D.; Muhlfeld, Clint C.; D'Angelo, Vincent S.
Annotated bibliography of scientific research on greater sage-grouse published from 2015 to 2019
The greater sage-grouse (Centrocercus urophasianus; hereafter GRSG) has been a focus of scientific investigation and management action for the past two decades. The 2015 U.S. Fish and Wildlife Service listing determination of “not warranted” was in part due to a large-scale collaborative effort to develop strategies to conserve GRSG populations...
Carter, Sarah K.; Arkle, Robert S.; Bencin, Heidi L.; Harms, Benjamin R.; Manier, Daniel J.; Johnston, Aaron N.; Phillips, Susan L.; Hanser, Steven E.; Bowen, Zachary H. Relative toxicity and sublethal effects of NaCl and energy-related saline wastewaters on prairie amphibians
Increasing salinity in freshwater environments is a growing problem due both to the negative influences of salts on ecosystems and their accumulation and persistence in environments. Two major sources of increased salinity from sodium chloride salts (NaCl) are saline wastewaters co-produced during energy production (herein, wastewaters) and road...
Tornabene, Brian J.; Breuner, Creagh W; Hossack, Blake R. Persist in place or shift in space? Evaluating the adaptive capacity of species to climate change
Assessing the vulnerability of species to climate change serves as the basis for climate‐adaptation planning and climate‐smart conservation, and typically involves an evaluation of exposure, sensitivity, and adaptive capacity (AC). AC is a species’ ability to cope with or adjust to changing climatic conditions, and is the least understood and most...
Thurman, Lindsey L.; Stein, Bruce; Beever, Erik A.; Foden, Wendy; Geange, Sonya; Green, Nancy; Gross, John E.; Lawrence, David J; LeDee, Olivia Erin; Olden, Julian D.; Thompson, Laura; Young, Bruce Does signal-free detrending increase chronology coherence in large tree-ring networks?
Over the past decade, dendrochronologists have increasingly adopted the signal-free detrending (SFD) method to remove age-size trends in tree-ring measurement series, amplify the common stand-wide signal in composite chronologies, and recover medium- to low-frequency patterns that may be inadvertently removed by other detrending approaches....
McPartland, M.Y.; St. George, Scott; Pederson, Gregory T.; Anchukaitis, K.J. Yellowstone Grizzly Bear investigations 2019 - Annual report of the Interagency Grizzly Bear Study Team
No abstract available.
van Manen, Frank T.; Haroldson, Mark A.; Karabensh, Bryn Robotic environmental DNA bio-surveillance of freshwater health
Autonomous water sampling technologies may help to overcome the human resource challenges of monitoring biological threats to rivers over long time periods and large geographic areas. The Monterey Bay Aquarium Research Institute has pioneered a robotic Environmental Sample Processor (ESP) that overcomes some of the constraints associated with...
Sepulveda, Adam J.; Birch, Jim M.; Barnhart, Elliott; Merkes, Christopher M.; Yamahara, Kevan; Marin, Roman III; Kinsey, Stacy; Wright, Peter R.; Schmidt, Christian Effects of experimental warming and nutrient enrichment on wetland communities at the Arctic’s edge
Global warming-related changes to freshwater ecosystems in Arctic and Subarctic regions have been magnified by nutrient input from increasing waterfowl populations. To gain insight into how these changes might affect ecosystem function, we conducted a mesocosm experiment in the Subarctic by enriching N and P (1 ×, 10 ×, and 20 × treatments) and...
Davenport, Jon M.; Fishback, LeeAnn; Hossack, Blake R.