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First wolves being transported into Yellowstone for release, January 1995. In January 1995, U.S. and Canadian wildlife officials captured 14 wolves from multiple packs east of Jasper National Park, near Hinton, Alberta, Canada. These wolves arrived in Yellowstone in two shipments—January 12, 1995 (8 wolves) and January 20, 1995 (6 wolves).
Trophic cascades also impact the biodiversity of ecosystems, and when examined from that perspective wolves appear to be having multiple, positive cascading impacts on the biodiversity of Yellowstone National Park. These impacts include: This diagram illustrates trophic cascade caused by removal of the top predator.
William Ripple is the author of more than 100 peer-reviewed scientific articles, most of which deal with trophic cascades. [10]Ripple, along with his frequent coauthor, Robert Beschta, have studied, published, and publicized the positive impact that gray wolves have had on the Yellowstone National Park ecosystem since their reintroduction in 1995 and 1996. [11]
Yellowstone National Park is symbolic of the American West to many. It became the world’s first national park when President Ulysses Grant signed it into existence in 1872. ... Wolves & More at ...
The park is a commonly cited example of apex predators affecting an ecosystem through a trophic cascade. [25] After the reintroduction of the gray wolf in 1995, researchers noticed drastic changes occurring. Elk, the primary prey of the gray wolf, became less abundant and changed their behavior, freeing riparian zones from constant grazing.
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Grizzly bears and wolves are usually the star attractions for wildlife watchers in Yellowstone but this spring, a tiny and exceedingly rare white buffalo calf has stolen the show.
The most famous example of a trophic cascade is that of the introduction of wolves to Yellowstone National Park, which had extradionary effects to the ecosystem. Yellowstone had a massive population of elk because they had no predators, which caused the local aspen population and other vegetation to significantly decrease in population size ...