Glen Canyon National Recreation Area (N.R.A), Personal Watercraft Rule-making
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Page : 430 pages
File Size : 12,41 MB
Release : 2003
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Page : 430 pages
File Size : 12,41 MB
Release : 2003
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Page : 186 pages
File Size : 29,83 MB
Release : 1993
Category : Forests and forestry
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Author : Linda M. Hill
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Page : 538 pages
File Size : 29,11 MB
Release : 1998
Category : Grand Staircase-Escalante National Monument (Utah)
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Page : 494 pages
File Size : 15,1 MB
Release : 1987
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Author : W. Wallace Covington
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Page : 376 pages
File Size : 40,27 MB
Release : 1994
Category : Ecosystem management
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"This conference brought together scientists and managers from federal, state, and local agencies, along with private-sector interests, to examine key concepts involving sustainable ecological systems, and ways in which to apply these concepts to ecosystem management. Session topics were: ecological consequences of land and water use changes, biology of rare and declining species and habitats, conservation biology and restoration ecology, developing and applying ecological theory to management of ecological systems and forest health, and sustainable ecosystems to respond to human needs. A plenary session established the philosophical and historical contexts for ecosystem management."--Title page verso.
Author : Earl F. Aldon
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Page : 178 pages
File Size : 44,40 MB
Release : 1993
Category : Forest ecology
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Author : Lawrence E. Stevens
Publisher : University of Arizona Press
Page : 432 pages
File Size : 24,71 MB
Release : 2008
Category : Nature
ISBN : 9780816526451
A collection of articles on the ecology of North American desert springs, by authors from the fields of biology, botany, ichthyology, conservation, geology and law; and covering both the special traits of springs and the ways in which they might be managed in order to survive.
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Page : 336 pages
File Size : 47,98 MB
Release : 1991
Category : Natural history
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Page : 666 pages
File Size : 34,40 MB
Release : 1990
Category : National parks and reserves
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Page : 798 pages
File Size : 31,83 MB
Release : 1989
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