A Directory of Research Natural Areas on Federal Lands of the United States of America
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Page : 132 pages
File Size : 49,87 MB
Release : 1968
Category : Research natural areas
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Author :
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Page : 132 pages
File Size : 49,87 MB
Release : 1968
Category : Research natural areas
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Author :
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Page : 24 pages
File Size : 34,12 MB
Release : 1992
Category : Forest conservation
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Author : C. T. Dyrness
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Page : 244 pages
File Size : 26,8 MB
Release : 1975
Category : Land use
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Research Natural Areas are examples of typical and distinctive natural ecosystems and habitats reserved for scientific and educational use. This outline of the minimal Research Natural Area system needed to provide adequate field laboratories for ecological, environmental, and land management research was developed by an interinstitutional, interdisciplinary working group. Natural area needs were first described on the basis of individual organisms, habitats, or ecosystems which should be represented. These "cells," the basic building blocks in defining the total scope of the system, considered terrestrial and aquatic environments as well as rare and endangered species. Identified cells were matched against existing Research Natural Areas to determine which were already filled. The remaining, unfilled cells were then tentatively grouped as units which were listed as Research Natural Area needs. A minimal Research Natural Area system for Oregon and Washington requires approximately 360 tracts which, in turn, incorporate over 770 individual cells (ecosystems, habitats, or organisms). Since 60 Research Natural Areas are already established, about 300 additional areas are needed. These remaining needs were assigned a priority (low, medium, or high) based on importance and degree to which they are endangered, as well as identified as to the Federal, State, or private agency or institution most likely to be able to provide a tract of that type. The purpose of Research Natural Areas, their place in land planning, history of Research Natural Area activities in the Pacific Northwest, and general observations and recommendations on unresolved problems are also outlined.
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Page : 280 pages
File Size : 43,66 MB
Release : 1977
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Page : 92 pages
File Size : 17,48 MB
Release : 2001
Category : Forest protection
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Author : American Association for the Advancement of Science. Council Study Committee on Natural Areas as Research Facilities
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Page : 325 pages
File Size : 34,75 MB
Release : 1964
Category : Natural areas
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Author : Lee E. Carbonneau
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Page : 300 pages
File Size : 23,64 MB
Release : 1995
Category : Botany
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Author : Todd Keeler-Wolf
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Page : 186 pages
File Size : 23,25 MB
Release : 1990
Category : Natural areas
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Page : 0 pages
File Size : 47,35 MB
Release : 1994
Category : Forest protection
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Page : 90 pages
File Size : 45,43 MB
Release : 1984
Category : Forest ecology
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