Treesearch

Fifth in a series of proceedings of symposia on wildland shrubs. Has sections on biotechnology and breeding, environmental management and technology, and ecophysiology of western shrubs. Twenty-four papers are included.

The RPA Assessment provides long-term projections of supply of and demand for natural resources. A variety of economic and demographic variables are critical factors in these projections. To ensure consistency across resources analyses, a set of basic assumptions are developed to be used in all resource analyses. This document describes the basic assumptions for the 1989 RPA Assessment and how they differ from those used in the 1979 RPA Assessment.Many changes occurred in the U.S. economy between 1979 and 1989. During this decade, trade and budget deficits, interest and inflation rates,...

This document describes the programs and responsibilities of the Forest Service, including research, cooperative programs, and management of the National Forest System. These program affect almost all forest lands in the United States, including timberlands, woodlands, brushlands, grasslands, alpine areas, rangelands, and associated waters. These lands total 1.6 billion acres, or about 70% of the total land area of the United States. Forest Service activities are also concerned with the management of trees, forests, and associated resource in and near urban areas. Forest research and...

This document reviews the management and use of forests, grasslands, and croplands as our nation developed. It also addresses wildlife, recreation resources, minerals, and water resources. It provides a systematic account of the changing status of our natural renewable resources and minerals and their current status, and concludes with an outlook for the future. The focus is on land management and use, but policy, population, and technology as well as resource sensitivity, resilience, and productivity are other important dimensions of this review. The intent it to present an understanding...

Wildlife and fish are an integral component of all environments from pristine wilderness to the most intensively managed urban settings. The values associated with wildlife and fish have broadened from the utilitarian views held by early subsistence and market hunters to the recognition that animals contribute to the overall public welfare in a multitude of ways. This is reflected in part by increased nonconsumptive uses of wildlife and fish, increased memberships in wildlife and fish organizations, increased public interest in policies and programs affecting wildlife and fish, and in the...

The United States has abundant supplies of fresh water. The renewable water supply of the coterminous United States amounts to about 1,400 billion gallons per day (bgd). Aggregate daily withdrawals amount to 343 bgd or 25% of renewable supply. Aggregate daily consumption amounts to 93 bgd or 7% of renewable supply.The Nation's watersheds are generally in good condition. But special attention must be given to managing the soil and vegetation on more than 70% of our watersheds to maintain or improve the quality and quantity of water flowing from them. A survey of watersheds in the U.S....

Range vegetation is defined as grasses, grass-like plants, forbs, and shrubs. When the plant community is dominated by this type of vegetation, the land is referred to as rangeland. Rangelands predominate in the western United States as natural grasslands, shrublands, savannas, deserts, tundra, alpine, coastal marshes, and wet meadows. In the eastern United States, rangelands occur as tallgrass prairie, marshes, or wet meadows. Riparian ecosystems and plant communities dominated by introduced species are also considered rangeland. About 34% or 770 million acres of the total land base in...

In 1987, 1.5 billion acres, about 63% of the total land and inland water area of the United States, was in forest and rangeland. Forest totals 32% and rangeland totals 34% of the land area. Most of the Nation's forest and rangeland are in nonfederal ownership.In 1987, about 1 billion acres or 67% of the total were owned by nonfederal public agencies, forest industry, farmers and ranchers, and other private individuals. The nonfederal forest lands are concentrated in the East, and private rangelands are concentrated in the West. The federal lands are administered primarily by two agencies -...

Minerals are essential to modern life. They are important to the national economy, and to the economy of many individual states. Some minerals are of strategic importance, and essential to national economic and military security.Minerals are different from other forest and rangeland resources covered in the RPA Assessment. They are nonrenewable, and are more difficult to find, inventory, and develop. Mineral development is governed by a complex set of laws, and administered by a number of federal agencies.The U.S. is rich in many of the minerals it requires, but there is uncertainty about...

These proceedings consist of 43 presented papers on control of damage caused by many different animals. After an "overview" session, papers were presented in sessions titled: Carnivores, Urban, Big Game, Birds, and Rodents and Lagomorphs.