A preliminary classification of forest communities in the central portion of the western Cascades in Oregon Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/t722hb31f

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  • Forest communities in the central portion of Oregon's western Cascades are arrayed along moisture and temperature gradients. With the aid of reconnaissance data and a computerized ordination technique, 23 forest communities have been provisionally recognized in two distinct forest zones, the Tsuga heterophylla (300 to 1050 m in elevation) and the Abies amabilis (1050 to 1550 m). The location of these zones is largely a function of temperature (elevation), while distribution of individual communities within a zone is controlled mainly by moisture availability. Eleven climax or near-climax associations and three seral communities were recognized within the Tsuga heterophylla zone. Associations range from the Pseudotsuga/Holodiscus on very dry sites to the Tsuga/Polystichum-Oxalis on wet sites. In the Abies amabilis zone, nine units were identified--seven climax or near-climax associations and two seral communities. Driest habitats in the zone are occupied by the Abies--Tsuga mertensiana/ Xerophyllum association and wettest sites support the Chamaeeyparis/Oplopanax association. Characteristics of all 23 forest communities are described and relationships among them are discussed.
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  • 22468958 bytes
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  • Master files scanned at 600 ppi (256 Grayscale) using Capture Perfect 3.0 on a Canon DR-9080C in TIF format. PDF derivative scanned at 300 ppi (256 B&W), using Capture Perfect 3.0, on a Canon DR-9080C. CVista PdfCompressor 3.1 was used for pdf compression and textual OCR.
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  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2008-01-16T20:42:42Z (GMT) No. of bitstreams: 1 Bulletin_4.pdf: 22468958 bytes, checksum: b011a78f8b753387c59b7c165e0bba1a (MD5)
  • description.provenance : Made available in DSpace on 2008-01-16T20:42:42Z (GMT). No. of bitstreams: 1 Bulletin_4.pdf: 22468958 bytes, checksum: b011a78f8b753387c59b7c165e0bba1a (MD5) Previous issue date: 1974
  • description.provenance : Submitted by Adam Powell (apscanner@gmail.com) on 2008-01-11 No. of bitstreams: 1 Bulletin_4.pdf: 22468958 bytes, checksum: b011a78f8b753387c59b7c165e0bba1a (MD5)

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Last modified: 07/18/2017

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