Grey Wolf

Throughout the 1970’s, the US Fish and Wildlife Service developed a criteria to help identify the red wolf from the other the canids in order to protect them. Between 1974 and 1980, the US Fish and Wildlife service used this to identify and discovered that there only 17 red wolves remaining in the

During 70 years of absence from the Rockies, the Grey Wolf had been protected under the Endangered Species Act that was passed in 1973. Since the wolf is under the protection of Endangered Species Act a person could be punished with up to a $100,000 fine and up to 1 year in jail for killing a wolf. Back in the

area’s native wolf and grizzly bear population. Tourism to the area has also prompted Yellowstone’s Lake Trout problem, believed to

Over the past several years, the gray wolf, native to the Wisconsin area, has been listed federally as an endangered species due to the graphic and horrific treatment they had received during the industrialization periods of America, when they were frowned upon and hated because they are predatory creatures and did, on occasion, attack livestock and pets. Because the government was encouraging the hunting, including bounties for the animals, the wolves were hunted to near extinction. However, now Wisconsin faces a new problem. With the reintroduction of the wolves to the state, and their continued endangered status federally, the population has increased well beyond expectations, reaching what could be considered a problematic state. A

While in the acclimation pens the wolves were fed a diet of elk and other road kill with wolves typically consuming 21 to 32 pounds of meat in a single feeding. In March of 1995, three of the packs were released in Yellowstone, but with one issue; the wolves refused to exit through the gate because they had associated it with humans, forcing the park rangers to cut a hole in the side of the enclosure for them to escape (Sanders par. 11). Once the wolves were released two of the packs left the park and set up their territory leaving only one group initially setting up inside the park.

“Restoring an ecologically complete ecosystem in Yellowstone requires the return of willows--and with them, beavers. There's a clear threshold for ecosystem recovery. Willow stands must be more than 6 feet tall, the scientists found. That height is important, says Marshall. Then willows are beyond the reach of browsing elk, and can serve as seed sources for new young willows. Once willows have returned, beavers will gnaw down a certain number of them to build dams. The dams will further slow stream flow, allowing yet more willows to grow. The results offer new insights on the role of wolf-driven trophic cascades in the Yellowstone ecosystem, says Hobbs. Trophic cascades like that in Yellowstone occur when predators--or the lack thereof--in an ecosystem change the abundance or alter traits of their prey, in turn affecting the next lower trophic level.” ("National Science Foundation", 2013)

We looked first at the relationship between the wolf population and the moose population. From about 1960 to 1970, the wolf population remained fairly consistent at about 20 to 25 wolves. During this time, the moose population grew steadily from 500 to over 1200. The next 10 years saw a doubling of the wolf population to 50. This same 10 years saw a decrease of the moose population from over 1200 to over 800. Then in 1980 began a two year drastic decline in the moose population, which was brought down to 15. For the rest of the decade, the moose population remained quite low at numbers near 20. During the 1980s, the moose population doubled again from around 800 to

Ed Yong makes very valid points on how the wolves of Yellowstone have impacted the overly populated elk herds. He has this to say about the herds; “Today the population stands at just over 6,000 down from 19,000 in the elk’s wolf-free heyday,” (ll57). This might seem like a terrible drop in the elk’s numbers, but it is actually a good thing. Yong tells us, “The large deer had run amok in the wolf-free decades, causing serious damage to the park’s trees,” (ll5-6). So in reality, while there are far less elk now, the trees can start to build back up again.

The United States Fish and Wildlife Service are considering removing the gray wolf from the endangered species list once Idaho, Montana, and Wyoming have enough wolves to be deemed sufficient to continue to expand the wolf population, requiring only that each of these three states have a management plan in effect to prevent the gray wolf from becoming endangered again. With the current attitude of the governments in these states, the wolf should not lose their federal support under the Endangered Species Act as it would merely serve to cause the wolves to become endangered once again, or at best, held to the absolute minimum population that the states can pass off as “viable, self-sustaining populations”

The Mexican wolf is the southernmost subspecies of gray wolf in North America, its natural habitat was that of the southwest United States and Mexico, Texas, New Mexico and Arizona as their home range in the US. Mexican wolves typically feed on deer and elk. (Rinkevich, Murphy, & Barrett, 2011). The gray wolves were a menace to rancher’s cattle and farmer’s livestock. Depredation of livestock led ranchers and state governments to declare war on the Mexican gray wolves through public and private bounties. The Mexican gray wolves were successfully removed from the wild. (Foreman, 2004) The Endangered Species Act of 1973 was vital for the protection of the Mexican gray wolf. (Larkin, Noss, & Maehr, 2001) In 1990, the United States Fish & Wildlife Service coordinated and developed a Mexican wolf reintroduction recovery plan to establish a wild population of no less than 100 Mexican Gray wolves in March

During the third Gray Wolf hunting season in Minnesota there was a total of 272 wolves killed and this was 22 more than the initial target amount (Kraker, Dan, 2014, December 19). There was a total of over 1,500 wolves that were killed since the authorized Minnesota and Wisconsin hunting season in 2011 (Lovvorn, Jonathan (as cited in Kraker, Dan, 2014, December 19). As of December 19, 2014 Minnesotans cannot legally kill a wolf unless it is in self-defense or a threat to a human life. Because of this new law wolves are protected in Minnesota, Wisconsin, and Michigan. Wolves that reside in Minnesota are under the management of the Endangered Species Act, which is allowing these wolves to replenish in Minnesota. (Minnesota Department of Natural Resources, 2015) The Endangered Species Act has helped the wolf population over the years and will continue to help them become abundant again.

These were all key factors to their near extinction. In 1974 the wolves were placed under the Endangered Species Act (ESA), but were not protected for long. Many environmentalist agreed with this act because environmentalist knew how crucial this keystone specie was to the ecosystem. Without the grey wolves existence, the whole rest of the ecosystem would not function properly. Unfortunately, around the 1960s, the gray wolf population was basically extinct, which resulted in a huge controversy. Luckily, “In 1995, the first 14 wolves were introduced to the Yellowstone National Park to increase the wolf population”(Transplanted) that had been decreasing gradually. Over the years more Canadian wolves were introduced to the Yellowstone National park to increase the wolf population. This procedure was successful because the wolf population throughout the Yellowstone region was on the rise. The long term goal for the environmentalists and Yellowstone park rangers would be to have around 1,000 wolves roaming the region.

In this article, authors William Ripple and Robert Beschta focus on the issue of predation and the way it affects biodiversity and otherwise alters ecosystems. While many other studies have stressed the lethal effects of predation by carnivores, the authors of this study have chosen to focus on how nonlethal outcomes of predation affect the structure and function of ecosystems. The authors give two main objectives to their study: first to provide a short synthesis of the potential ecosystem responses to predation risk in a three-level trophic cascade involving large carnivores, hoofed animals, and vegetation; and secondly to present research that centers on wolves, elk, and woody browse species in the northern area of Yellowstone National

The gray wolves ingigenous to Oregon were eradicated in the 1940's because they menaced livestock. In 1973 the endangered species act was passed by congress and the grey wolf was desighned an an endangered species. In 1999, Oregon saw it's first wolf pups were born in the state. On November 9, 2015 the state delisted the gray wolf claiming breeding guidelines had been reached.

Canis Lupus is the most distributed land mammal, prior to human transport (Mech and Boitani 2003/2010). This has led to their extant to span 70 countries and four continents; although in some regions they are completely extinct. These regions include Japan, Austria, Belgium, Denmark, Ireland, Luxembourg, Netherlands, Switzerland, United Kingdom although there are very few individuals in Austria and Switzerland, and Bangladesh. They dwell primarily in wilderness and remote areas with the largest concentrations of their numbers congregating in northern regions living predominantly in Canada and Russia (Harrington and Paquet 1982). The living conditions of Canis Lupus are widely varied with some inhabitants living in forests, prairies, tundra,