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Filtering by: Academic Affiliation Forest Science Decade 2000-2009 Date 2000 Subject Douglas fir -- Ecology -- Oregon

Ecosystem effects of vegetation removal in coastal Oregon Douglas-fir experimental plantations : impacts on ecosystem production, tree growth, nutrients, and soils

Creator:

Yildiz, Oktay

Abstract:

Effects of partial understory removal on belowground and aboveground ecosystem properties were investigated in 5 and 15 yr old Douglas-fir (Pseudotsuga menziesll (Mirb.) Franco) experimental plantations in western Oregon. Seedling survival was not affected by understory removal at age 5 yr. But through age 15 yr, understory removal increased seedling...

Resource Type:

Dissertation
Structure and development of old-growth Douglas-fir in central western Oregon

Creator:

Poage, Nathan Jeremy

Abstract:

The tree species and size structure of 9l old-growth forests dominated by Douglas-fir in central western Oregon was characterized using complete inventories of all trees larger than 20cm dbh over a mean area of 17.1ha at each site. Douglas-fir accounted for over 75% of the total average basal area (39.1...

Resource Type:

Dissertation