3. List 2 key enviromental issues for each of the Essays - Biology

3. List 2 key enviromental issues for each of the Essays - Biology 3. List 2 key enviromental issues for each of the following region and describe about how are the issues changing: The wilderness North These areas have important economic values in their trees, animals, scenery, and other natural resources. Resources exploitation involves significant trade-offs as these ecosystems are sensitive to insults and take a long time to repair damage caused by exploitation. Many short-term political and economic decisions have failed to look at long-term environment implications. Native peoples in these areas are sensitive to changes in land use or government policy that would force changes in traditional ways of life. Increasingly sophisticated in negotiations. The Agricultural Middle Middle of North America is dominated by intensive agriculture. Original, natural ecosystems have been replaced by managed agriculture Tremendous economic value. Mostly private land- large economic risks. Major non-point pollution source Soil erosion and groundwater contamination Fertilizer and Pesticides The forested West Government and commercial timber companies own large sections of land. Historically, much f this timber has been sold at a loss. In 1993, USFS directed to stop below-cost timber sales. Timber officials claim access to public land is necessary to remain in business and support the economy; conservationists argue ecological and intangible values outweigh economic value. Northern Spotted owl has become a symbol of conflict between logging and preservation. The Dry West Characterized by area where rainfall is inadequate for agriculture, but adequate enough to allow livestock production. Because much of western U.S. is of low economic value, most is still controlled by U.S government. Encourages use by providing cheap water for livestock and irrigation, cheap grazing fees, and access for industrial development. As cities grow, conflict arises between urban dwellers and ranchers and farmers. Increased demand will result in shortages and resulting trade-off decisions Low population density areas tend towards wilderness character. Economic livestock and wildness preservation. Great Lakes and Industrial Northeast: Great Lakes and Northeast are dominated by large metropolitan complexes with large, complex resource demands. Many older cities have declined, leaving behind abandoned sites and environmental problems. One of the greatest problems is water contamination from toxic material Bioaccumulation in food chain. Fish Advisories The South Microcosm of all other regions. Extremely rapid population growth in some areas such as coastal regions Pockets of extreme poverty.