Northern Rocky Mountain Science Center (NOROCK)


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.

Featured Research

Featured Research

Explore NOROCK research

Disease & Invasives

NOROCK in the News

NOROCK in the News

Click here for the most recent media and news on NOROCK science.

Pika's Future


Date published: May 17, 2019

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. 

Date published: March 20, 2019

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...

Date published: December 4, 2018

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.


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Year Published: 2019

Using the beta distribution to analyze plant cover data

Most plant species are spatially aggregated. Local demographic and ecological processes (e.g. vegetative growth and limited seed dispersal) result in a clustered spatial pattern within an environmentally homogenous area. Spatial aggregation should be considered when modelling plant abundance data.Commonly, plant abundance is quantified by...

Damgaard, Christian; Irvine, Kathryn M.

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Year Published: 2019

Risk factors and productivity losses associated with Mycoplasma ovipneumoniae infection in United States domestic sheep operations

Association of Mycoplasma ovipneumoniae with pneumonia in domestic small ruminants has been described in Europe, Asia, and New Zealand but has received less attention in the United States. In 2011, the US Department of Agriculture’s National Animal Health Monitoring Survey detected M. ovipneumoniae shedding in 88% of 453 domestic sheep operations...

Manlove, Kezia R.; Branan, M; Baker, K; Bradway, D; Cassirer, E. F.; Marshall, K.L; Miller, Ryan S.; Sweeney, Steven J.; Cross, Paul C.; Besser, T. E.

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Year Published: 2019

To forage or flee: Lessons from an elk migration near a protected area

Alteration of wide-ranging wildlife migrations can drastically impact the structure and function of ecosystems, yet the causes and consequences of shifting migration patterns remain largely unknown. Management decisions made in one portion of a landscape may induce spatial and temporal shifts of wildlife use in another, creating tension among...

Mikle, Nathaniel; Graves, Tabitha A.; Olexa, Edward M.