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Filtering by: Creator Grabe, Don F. Degree Name Master of Forestry (M.F.)

Soil compaction and disturbance following a thinning of second-growth Douglas-fir with a cut-to-length and a skyline system in the Oregon Cascades

Creator:

Allen, Marganne Mary

Abstract:

Soil bulk density and disturbance were measured before and after a commercial thinning of 3 0-50 year-old Douglas-fir using a cut-to-length (CTL) and a skyline system on the Willamette National Forest in the Oregon Cascades. A dual-probe nuclear densimeter was used to measure bulk density at four and eight inches....

Resource Type:

Capstone Project

Full Text:

............................................................................................................................................. 59 TABLE 19: PoST-THINNING MULTIPLE COMPARISON OF DISTURBANCE CLASS H?F TO OLD SKID TRAILS
Managing Douglas-fir Mortality: Case Studies from Western Oregon

Creator:

Campbell, Lewis

Abstract:

An increase in frequency and severity of hot, dry summers has been associated with a dramatic shift in the coniferous forests of western Oregon’s valleys, especially on the privately-owned properties along the low-elevation edges of these valleys. Various conifer species, including Douglas-fir (Pseudotsuga menziesii), are declining in these forests, leaving...

Resource Type:

Capstone Project

Full Text:

.) mix with a few Oregon white oaks and grand firs (Abies grandis (Douglas ex D. Don) Lindl