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.
Retreat of Glaciers in Glacier National Park
Glacier Repeat Photography Project
NOROCK ScienceNews
Detecting Invasive and Rare Species with the National Streamflow Network
Two recently published papers suggest the integration of environmental DNA, or eDNA, sampling at select National Streamflow Network streamgages in the U.S. Northwest is feasible.
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.
Publications
Chronic wasting disease—Research by the U.S. Geological Survey and partners
IntroductionChronic wasting disease (CWD) is the only transmissible spongiform encephalopathy, a class of invariably fatal neurodegenerative mammalian diseases associated with a misfolded cellular prion protein found in wild free-ranging animals. Because it has a long incubation period, affected animals in Cervidae (the deer family; referred to as...
Hopkins, M. Camille; Carlson, Christina M.; Cross, Paul C.; Johnson, Christopher J.; Richards, Bryan J.; Russell, Robin E.; Samuel, Michael D.; Sargeant, Glen A.; Walsh, Daniel P.; Walter, W. David
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; 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. 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