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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.
During that time, the Idaho wolf population had made the most remarkable comeback in the region, with its abundant federal lands and wilderness areas peaking at nearly 900 wolves (almost half of the regional wolf population) in 2009. However, the wolves have increasingly been blamed for livestock and hunting opportunity losses.
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 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 ...
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.
The agency said the new genetic method, which produced similar results as the camera method, put last summer’s wolf population at around 1,150 animals — down about 200 from the previous year.
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The lead could easily read: The History of wolves in Yellowstone National Park beings in 1872 and continues to the present day. From 1872–1926 gray wolves were extirpated from Yellowstone. Wolves were absent from Yellowstone during the period 1926–1995. In January 1995 they were reintroduced into the park where they thrive today.