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Vegetative ecology of Hunts Cove, Mt. Jefferson, Oregon

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dc.contributor.advisor Chilcote, Willliam W.
dc.creator Campbell, Alcetta Gilbert
dc.date.accessioned 2012-11-12T17:35:32Z
dc.date.available 2012-11-12T17:35:32Z
dc.date.copyright 1973-02-22
dc.date.issued 1973-02-22
dc.identifier.uri http://hdl.handle.net/1957/35040
dc.description Graduation date: 1973 en_US
dc.description.abstract The vegetative communities in the subalpine meadows of Hunts Cove, Mt. Jefferson, and some of the major environmental factors affecting them were studied in the summer of 1971. Hunts Cove is in the subalpine Tsuga mertensiana parkland of the Central Oregon High Cascades. Habitats within the Cove vary considerably; elevation changes from 1500 m to 1900 m; water regime ranges from bogs and seeps to desert; snowlie varies as much as two months at different points in the same year. Estimates of vegetative cover and frequency were taken on 300 quadrats. Snow lie was monitored on a weekly basis. Soils were collected and analyzed. Eleven meadow communities were distinguished. They are: A. The short sedge communities, 1) Carex nigricans-Aster and 2) Carex nigricans-Polytrichum on late snowfree, poorly drained sites; B. Bryophyte, on very late snowfree, damp, shaded soil; C. Heath communities on well drained sites, 1) Phyllodoce-Cassiope on exposed late snowfree slopes, 2) Vaccinium deliciosum on moderately late snowfree slopes and 3) Potentilla-Carex nigricans on very late snowfree sites with rodent activity; D. Senecio lush herb on mesic warm sites; E. Hydric communities, 1) Eleocharis-Aulacomnium occurring in stagnant water, 2) Carex rostrata-Sphagnum in freely moving water, 3) Carex scopulorum in seeps and bogs with permanent water supply, probably an edaphic climax, and 4) Carex sitchensis in swamps flooded during meltoff. These communities were arrayed in a floristic ordination and the position of all hydric, lush herb, and short sedge sample plots was found to parallel snowfree dates. Well drained heath communities became snowfree in the order expected from other studies. Comparison of the communities with other studies from the Northwest suggests Phyllodoce-Cassiope, Vaccinium deliciosum and the Carex nigricans communities to be parts of a consistent vegetative pattern extending north into Southern B. C. en_US
dc.language.iso en_US en_US
dc.subject.lcsh Meadow ecology -- Oregon -- Hunts Cove en_US
dc.title Vegetative ecology of Hunts Cove, Mt. Jefferson, Oregon en_US
dc.type Thesis/Dissertation en_US
dc.degree.name Master of Science (M.S.) in Botany en_US
dc.degree.level Master's en_US
dc.degree.discipline Science en_US
dc.degree.grantor Oregon State University en_US
dc.description.digitization File scanned at 300 ppi (Monochrome, 24-bit Color) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR. en_US
dc.description.peerreview no en_us


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