Includes bibliographical references (pages 183-199). Includes indexes.

Part 1: Problem setting. Introduction ; The approach -- Part 2: Current states of nature. The natural forest community. High latitude and Mediterranean climate ; Canopy height and massivity of forest ; Conifer dominance ; Highly dissected topography ; Structural characteristics ; The unique combination of characteristics -- Forest trends and patterns. Ownership ; Depletion ; Current distribution ; Miscellaneous changes ; Focus on the Willamette National Forest -- Animal community characteristics / Larry D. Harris and Chris Maser. General characteristics ; Unique faunal characteristics ; Ordination of species ; Richness vs diversity -- Part 3: Analysis of alternatives. The applicability of insular biogeography. Two types of islands ; Species-area relations ; Local extinction and community change ; Isolation effects ; The distinction between true island biogeography and habitat islands -- Genetic resources and biotic diversity / Larry D. Harris, Michael E. McGlothlen and Michael N. Manlove. Endangered species ; Within-species diversity ; Faunal preservation vs. maximum species richness ; The equivalence of species ; Ecosystems and the landscape mosaic -- Evaluation of alternative approaches. The total area requirement ; Effective habitat island size ; Size vs. number ; Interisland distance ; Mammal home-range sizes and travel distances -- Part 4: A planning strategy. A system of long-rotation islands. Long-rotation islands vs. old-growth islands ; Long-rotation islands characteristics ; Island size frequency distribution ; Spatial distribution of islands ; Travel corridors and connectivity of islands -- Fitting the system to the landscape -- Summary and characteristics of the island archipelago approach -- Appendix 1: Scientific names of species cited in text -- Appendix 2: Volume of timber cut from the Willamette National Forest, 1905-81 -- Appendix 3: Approximate acreage cut from different elevational zones -- Appendix 4: Forty-five terrestrial vertebrate species of the western Cascades that require cavities, snags, and fallen logs -- Appendix 5: List of research natural areas and comparable preserves in western Oregon and western Washington.