Northern Rocky Mountain Science Center (NOROCK)

Filter Total Items: 167
Female grizzly with cubs
Date Published: December 13, 2017
Status: Active

The Interagency Grizzly Bear Study Team (IGBST) is an interdisciplinary group of scientists and biologists responsible for long-term monitoring and research efforts on grizzly bears in the Greater Yellowstone Ecosystem (GYE). The team was formed by the Department of the Interior (DOI) in 1973 as a direct result of controversy...

Wolf close up of eyes
Date Published: November 16, 2017
Status: Active

In 1995 and 1996, wolves were reintroduced into the Northern Rockies where they have since established and spread. Within Yellowstone National Park, one of the core protected release sites, the unmanaged population steadily increased to high densities, producing a large wolf population susceptible to infections such as canine parvovirus (CPV), canine distemper virus (CDV) and sarcoptic mange...

Elk on a feedground in Wyoming.
Date Published: November 16, 2017
Status: Active

Over the past 20 years, chronic wasting disease (CWD) in Wyoming has been spreading slowly outward from the southeastern corner of the state toward the Greater Yellowstone Area and Wyoming's elk feed grounds, where more than 24,000 elk are supplementally fed each winter.

Bighorn sheep close up
Date Published: November 16, 2017
Status: Active

Bighorn sheep populations are often impacted by outbreaks of pneumonia that are suspected to come from domestic sheep and goats.

Cattle Grazing at Sunset in Montana
Date Published: November 16, 2017
Status: Active

Researchers at the USGS are working on developing new quantitative methods to study disease dynamics in wildlife systems as well as systems at the wildlife-domestic-human interface. Much of our work focuses on how host population structure affects disease invasion, persistence and control in wildlife disease systems. We tackle these issues with a combination of simulation and statistical...

Elk on a feedground in Wyoming.
Date Published: November 16, 2017
Status: Active

Brucellosis is a nationally and internationally regulated disease of livestock with significant consequences for animal health, public health, and international trade.

Swiftcurrent Glacier 2016 (port)
Date Published: November 8, 2017
Status: Active

In 1910, the year Glacier National Park was established, Swiftcurrent Glacier filled this hanging valley just below the Continental Divide.  In 2016, it is obvious where the glacier has receded from the cliff edge and lateral moraine that once defined its extent.  Swiftcurrent fire lookout can be seen on top of the pyramid-shaped mountain in the 2016 photo.  

Please respect the...

Grinnell Glacier, GNP - 2016 (terminus)
Date Published: November 8, 2017
Status: Active

Notice the man standing on the glacier in the center of the historic photograph.  The figure lends a frame of reference to the photo pair, allowing the viewer to more easily interpret the depth of ice and the loss of volume when compared to the 2016 image. 

Please respect the photographer: When using these photographs, please credit the photographer and source (eg. T.J. Hileman,...

Grinnell Glacier, GNP - 2016
Date Published: November 8, 2017
Status: Active

The historic image shows how the upper bench of ice flowed into the main body of Grinnell Glacier.  By the early 1920s, the glacier’s volume had been reduced to the point that the two pieces became disconnected.  The upper bench, considered a separate glacier, was later renamed The Salamander Glacier for its salamander-like profile against the headwall.  The Continental Divide runs along the...

Grinnell Glacier, GNP - 2016
Date Published: November 8, 2017
Status: Active

This historic image is one of the oldest images re-photographed among the collection.  The massive wall of ice that constituted the terminus of Grinnell Glacier has receded beyond view from this point.  Each summer thousands of hikers take the well-worn trail to be rewarded with the sight of the remnant Grinnell Glacier and Upper Grinnell Lake.

Please respect the photographer: When...

Grizzly bear in the Greater Yellowstone Ecosystem
Date Published: September 19, 2017
Status: Active

NOROCK has substantial expertise in large carnivore research, primarily involving species listed as Threatened or Endangered.  NOROCK’s Large Carnivore Research Program includes scientists from NOROCK’s Headquarters, West Glacier Field Station, and the Southern Appalachian Field Station.  Studies are conducted in a wide variety of landscapes throughout the U.S., as well as international...

Glacial fed alpine stream in Glacier National Park.
Date Published: September 13, 2017

Glacier National Park (GNP) is considered a stronghold for a large diversity of plant and animal species and harbors some of the last remaining populations of threatened and endangered species such as grizzly bear and bull trout, as well as non threatened keystone species such as bighorn sheep and black bear. The mountain ecosystems of GNP that support these species are dynamic and influenced...