Rocky Mountain Elk
Encyclopedia
The Rocky Mountain Elk is a subspecies
Subspecies
Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...

 of elk
Elk
The Elk is the large deer, also called Cervus canadensis or wapiti, of North America and eastern Asia.Elk may also refer to:Other antlered mammals:...

 found in the Rocky Mountains
Rocky Mountains
The Rocky Mountains are a major mountain range in western North America. The Rocky Mountains stretch more than from the northernmost part of British Columbia, in western Canada, to New Mexico, in the southwestern United States...

 and adjacent ranges of Western North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

. The winter ranges are most common in open forests and floodplain marshes in the lower elevations. In the summer it migrates to the subalpine
Subalpine
The subalpine zone is the biotic zone immediately below tree line around the world. Species that occur in this zone depend on the location of the zone on the Earth, for example, Snow Gum in Australia, or Subalpine Larch, Mountain Hemlock and Subalpine Fir in western North America.Trees in the...

 forests and alpine
Alpine climate
Alpine climate is the average weather for a region above the tree line. This climate is also referred to as mountain climate or highland climate....

 basins. The total wild population is about 800,000 individuals.

The Rocky Mountain Elk was re-introduced in 1913 to Colorado from Wyoming after the near extinction of the regional herds. While over-hunting is a significant contributing factor, the elk’s near extinction is mainly attributed to human encroachment and destruction of their natural habitats and migratory corridors.

As of 2010, environmental and Chronic Wasting Disease
Chronic wasting disease
Chronic wasting disease is a transmissible spongiform encephalopathy of mule deer, whitetailed deer, elk , and moose. TSEs are caused by unusual infectious agents known as prions. To date, CWD has been found mainly in cervids...

problems in Estes Park, Colorado and on a greater scale throughout the Western U.S. and North America have local, state, and federal policy makers searching for solutions.

The Rocky Mountain National Park and the Estes Park environments are physically disrupted by the migration of the elk, ranging in size from calves to full grown 700 lbs. adults. Several indigenous butterfly and plant species are harmed, especially the aspen groves that the elk herd of perhaps 3,000 animals decimates in its search for food. The elk population, while taxing the common food resources, also adversely affects native species that share the same food supply such as the indigenous beavers.

The Rocky Mountain Elk herd has been diagnosed with a serious disorder called Chronic Wasting Disease (CWD). CWD affects the brain tissue of infected elk and is similar in symptoms to bovine spongiform encephalopathy (BSE), commonly known as mad-cow disease (MCD). There is no evidence to conclude that elk CWD is transmutable to humans and research concerning CWD and its effect on the eco-system continues.
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