- Discover essay samples

Endagerment of the grizzlies

4.9 of 5.0 (29 reviews)

627 words

Endagerment of the grizzlies Page 1
Endagerment of the grizzlies Page 2
The above thumbnails are of reduced quality. To view the work in full quality, click download.

Endagerment of the grizzlies

With all the new and advanced technology that is accessible today, who has time to enjoy or care about the great outdoors? Unfortunately, much of the wilderness and the animals within it are gradually fading away. There are many animals that have already been extinct and many more will soon be put on the list of extinction. In the second issue of Target Earth, Tim Stevens found in 1975, the grizzly bear was listed as a threatened species, under the Endangered Species Act. Stevens also stated, Today, the grizzly bear hangs on in the last remnants of wild places left in the U.S.--places like the Greater Yellowstone, Glacier Park, and Shelkirk Mountains of Northern Idaho. The survival of the grizzly bear depends on several factors such as: amount of food they need and amount of space they need to live.

Grizzly bears have tremendous food requirements in order to survive--adult females average 300 pounds, and males around 450 pounds, stated Stevens. Furthermore, grizzly bears are opportunistic feeders thriving on roots, berries, pine nuts, insects, herbaceous vegetation, fish, small mammals, and occasionally wild ungulates and their young. With grizzly bears wide variety of provisions, they need a large area to sustain themselves. Stevens stated, a male grizzly bear will use up to a 500 square mile "home range" throughout its life. Glover and Johnson stated, a female grizzly bear will use up 11-490 square miles throughout its life. Being that the grizzly bear is a wide-ranging, slow breeding species, and as such, are very good indicators of the overall health of the ecosystems they depend upon. If the habitat is in good shape, one could assume the bear is doing rather well(Stevens, Target Earth).

However, conservation biologist states, none of the current grizzly populations is large enough to sustain itself over time. Aldo Leoplod states, the most feasible way to enlarge the area available for wilderness fauna is for the wilder parts of the National Forests, which usually surround the Parks, to function as parks in respect of threatened species.

Leopold goes on to state, they have not so functioned is tragically illustrated in the case of the grizzly bear. The Greater Yellowstone is isolated from other wildland ecosystems. These populations become vulnerable to inbreeding and other genetic problems, it is critical to have these grizzly bear ecosystems connected by "linkages" or "biological corridors." Ecosystems are much larger than the designated national parks within them. At the core of the Greater Yellowstone National Park, which is 2.2 million acres. The ecosystem is 18 million acres and includes 7 national forests, wilderness areas, national wildlife refuges and Bureau of Land Management land. Bears are not only dependent upon the National Park "core," but also upon the surrounding lands. Scientists have long recognized that these species are dependent upon the health of the entire ecosystem(Stevens, Target Earth).

The grizzly bears habitat is slowly diminishing. The Northeast part of Greater Yellowstone provides a good example of the overall cumulative effects that many activities can have on an area. This area has been one of the best and most productive regions for grizzly bears. However, the U.S. Forest Service has been steadily logging and roading many of the last non-wilderness public lands in the region. For example, in one area called the Sunlight Basin, nearly, 4,500 acres of trees have been harvested since 1986. All of this timber was in grizzly habitat. Unfortunately, more timber sales are planned for this are in the future(Stevens, Target Earth)..

In addition, on our national forest lands, logging and mining companies and willing federal agencies continue the steady drumbeat of resource extraction. Logging, road building and other developments have begun to invade ...

You are currently seeing 50% of this paper.

You're seeing 627 words of 1254.

Similar essays

People Are Victims Of A Greater Force: The Environment

People would like to believe they can accomplish everything they want in life. In reality, it is just a positive way of thinking. It would be nice to believe that a person could do anything if he puts his mind to it, this way of thinking is not reality. People are victims of greater forces. The force is not a force of God or magic. The force a...

194 reviews
A Public Relations Proposal fo

r the American Egg Board, 1997 "AN EGG IS ALWAYS AN ADVENTURE" - OSCAR WILDE Eggs should be avoided because they are high in cholesterol. This is the biggest MYTH that has cracked the good reputation of the egg in the past years. In 1945, the number of eggs consumed per capita each year was 402. Then the news broke - scientists discov...

92 reviews
Smile...Come On...It's Free !!!

"A SMILE costs nothing, but gives much. It enriches those who receive, without making poorer those who give. It takes but a moment, but the memory of it sometimes lasts forever. None is so rich or mighty that he can get along without it, and none is so poor but that he can be made rich by it. A smile creates happiness in the home, fosters good will...

74 reviews

In ancient Greece, the most feared named was Sparta. It was a total war machine willing to take on all comers. They rose above the rest by being well disciplined and educated. The man who brought them this glory was . Like any great leader he was very idealistic. His main goal was to change Sparta into a complete city state. It is believed...

52 reviews
In Search of Excellence

Knowledge about organisational behaviour has become very important to a manager's performance and success. Therefore, it is not surprising that writers often claim to have the information that managers need if they are to excel in their jobs. is one of the most well known books of this type. In the book, Peters-and Waterman outlined sev...

95 reviews
Atsisiųsti šį darbą