Northern Rocky Mountain Science Center (NOROCK)
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We hope you will enjoy learning about the variety of ecosystems and species we are studying throughout the United States. Our scientists work on diverse issues such as fish and wildlife conservation, invasive species and wildlife disease, energy development, climate and ecosystem change, and much more. Click on Science to begin exploring the places we go and the species and landscapes we study.
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Check out our most up-to-date data, events and science.
Flattop Mountain Snowpack Data for Water Year 2018
Glacier Repeat Photography Project
NOROCK ScienceNews
IGBST Public Notifications and Resources
As part of ongoing efforts required under the 2016 Yellowstone Grizzly Bear Conservation Strategy to monitor the population of grizzly bears in the Yellowstone Ecosystem, the Interagency Grizzly Bear Study Team (IGBST) captures and monitors grizzly bears for research and monitoring purposes. Here you will find capture notifications for the 2019 field season.
An Integrated Framework for Ecological Drought Across Riverscapes of North America
Climate change is increasing extreme droughts events, posing a threat to freshwater ecosystems, particularly with human demands for diminishing water supplies.
USGS Grizzly Bear Biologist Receives Wyoming Outdoor Hall of Fame Honors
On March 22, USGS Supervisory Wildlife Biologist Mark Haroldson will be inducted into the Wyoming Outdoor Hall of Fame for his contributions to understanding grizzly bear biology, ecology, and...
Publications
Improved detection of rare, endangered and invasive trout using a new large-volume sampling method for eDNA capture
Environmental DNA (eDNA) detection probability increases with volume of water sampled. Common approaches for collecting eDNA samples often require many samples since these approaches usually use fine filters, which restricts the volume of water that can be sampled. An alternative to collecting many, small volume water samples using fine filters...
Sepulveda, Adam J.; Schabacker, Jenna; Smith, Seth; Al-Chokhachy, Robert; Luikart, Gordon; Amish, Stephen J. Statistical power of dynamic occupancy models to identify temporal change: Informing the North American Bat Monitoring Program
Dynamic occupancy models provide a flexible framework for estimating and mapping species occupancy patterns over space and time for large-scale monitoring programs (e.g., the North American Bat Monitoring Program (NABat), the Amphibian Research and Monitoring Initiative). Challenges for designing surveys using the dynamic occupancy modeling...
Banner, Katherine; Irvine, Kathryn M.; Rodhouse, Tom J; Donner, Deahn M.; Litt, Andrea R. Effect of amphibian chytrid fungus (Batrachochytrium dendrobatidis) on apparent survival of frogs and toads in the western USA
Despite increasing interest in determining the population-level effects of emerging infectious diseases on wildlife, estimating effects of disease on survival rates remains difficult. Even for a well-studied disease such as amphibian chytridiomycosis (caused by the fungus Batrachochytrium dendrobatidis [Bd]), there are few estimates of...
Russell, Robin E.; Halstead, Brian J.; Mosher, Brittany; Muths, Erin L.; Adams, Michael J.; Campbell Grant, Evan H.; Fisher, Robert N.; Kleeman, Patrick M.; Backlin, Adam R.; Pearl, Christopher; Honeycutt, R. Ken; Hossack, Blake R.