ELK-RANGE PROBLEM

It is the normal habit of the elk in the region to spend the nine winter

months in the lower mountain valleys and the summer months foraging on

the fresh and succulent meadow grasses of the subalpine forest and

alpine tundra country above 10,000 feet. Because of man-made

restrictions in their winter territory, the elk congregate principally

in Moraine Park, Beaver Meadows, and Horseshoe Park at this time. The

past years of protection and adequate vegetation so increased their

numbers that early in the 1940's there were some signs of large herds

"grazing off" most of their natural winter food available in these

valleys. To alleviate this overgrazing in the Park, the state of

Colorado authorized elk hunting on adjacent national forest lands in

1941 in order to remove excess elk migrating out of the Park. However,

this effort did not remove sufficient numbers from the Park herds.

Instead of allowing this potentially serious condition to continue and

the eventuality of either watching the elk starve or else feeding the

animals year after year, a harvest of surplus numbers by hunting was

conducted in the winter of 1944-1945. In this way a possible catastrophe

of starving and dying off of the entire elk herd was halted. The present

reduced elk herd of about 800 animals is considered more nearly within

the winter range carrying capacity. The fact that there are no longer

grizzly bear and sufficient cougar to take a normal number of these

animals as food was an aiding factor to the rapid increase of elk.

Concentrated numbers of elk seeking refuge in the aspen groves during

heavy winters in the lower valleys have heavily damaged the aspen trunks

by stripping bark for food. It is believed that pregnant cow elk, in

particular, are able to obtain vitamin A from the aspen bark for their

welfare at that time. This stripping or opening of the aspen trunk

allows penetration of fatal tree fungi, which may damage many aspen

groves. Fortunately, the prolific aspen grows rapidly and soon should

reappear satisfactorily.

Wild Animals of the Rockies With a List of Mammals found in Rocky Mountain National Park · 第 7 / 76 题