Centuries of Change in Pacific Northwest Forests: Ecological Effects of Forest Simplification and Fragmentation
The forests of the Pacific Northwest have undergone significant changes in the relative proportions of various forest types, including dramatic reductions in certain habitats such as oldgrowth forests and early successional habitat rich in woody debris. Intensive forest management practices have resulted in the simplification of forest structure through reductions in certain structural elements such as coarse woody debris, snags, and canopies with high spatial variability. The loss of old-growth forests to timber harvest and land-use conversion has resulted in a condition of fragmentation, creating spatial isolation of remaining patches and significant reductions in interior habitat conditions required by certain organisms. The ecological effects of forest simplification and fragmentation in the Pacific Northwest are reviewed, and management actions to reduce negative consequences are briefly discussed.
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Reserved forest for forest spirit (Phi Ta' Nainy); elephant on trail from Ban Hak Mai; views from mountain top north east of Ban Pa Pae; field from Mae Umlong Luang, site of 1964 National Geographic Society field-burning picture; old village site (right of tree); Ban Pa Pae villagers going to plant fields in early morning; panorama of small valley; houses in Ban Pa Pae. Scans of slides taken by Peter Kunstadter near Ban Pa Pae, Thailand in April 1967. Slide roll 567 (67 on slides). Kundstadter, Peter (1967-04)