Search results
Results from the WOW.Com Content Network
Rolf Peterson investigating the carcass of a coyote killed by a wolf in Yellowstone National Park, January 1996. Scientists have been researching and studying the impacts on the Yellowstone ecosystem since re-introduction in 1995. As the wolf population in the park has grown, the elk population, their favored prey, has declined.
In recent years, however, Yellowstone's elk population has plummeted. The Northern Herd, the only herd that winters in the park, has declined from nearly 20,000 animals in 1994 to less than 4,000 in 2013. Ecologists have linked this decline to a declining population of cutthroat trout in Yellowstone Lake, caused by invasive lake trout. With ...
The recovery of populations throughout the states of Wyoming, Montana, and Idaho has been so successful that on February 27, 2008, the U.S. Fish and Wildlife Service removed the Northern Rocky Mountain wolf population from the endangered species list. [127] As of January 2023, there are at least 108 wolves in the park in 10 packs. [128]
The Yellowstone Wolf Project started in 1995 and since it's become one of the most detailed studies of wolves the world. They also focus on studying the day-to-day life and social interactions of ...
The 10,000 year old Grand Canyon of Yellowstone surrounds the mighty Yellowstone River. Gazing from the canyon rim into the 1,000-feet deep gorge should make even the most seasoned traveler feel ...
Greater Yellowstone Area Wolf Pack Territories 2002 (95% MCP except where noted) * A 75% MCP was calculated for these five home ranges because of a high fluctuation in movements.
The main reason population growth has been slow is human-caused deaths. Of the 36 wolf mortalities in 2023, 33 were human-caused. Wolves were killed for attacking livestock, by poaching and in car ...
A bull elk grazes in Gibbon Meadows in the west-central portion of the park. An elk grazes with a bison in the park. There are at least 67 species of mammals known to live within Yellowstone National Park, a 2,219,791 acres (898,318 ha) [1] protected area in the Rocky Mountains of Wyoming, Montana, and Idaho.