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Filtering by: Subject Soils -- Cascade Range Degree Field Rangeland Resources

Similarities in understory vegetation composition between unthinned, thinned and old-growth Douglas fir stands in western Oregon

Creator:

Mayrsohn, Cheryl

Abstract:

Forest stands were studied to determine if old-growth forest structure could be mimicked in younger stands via overstory manipulation. Cover and species composition of understory plants were systematically sampled in sixteen thinned second-growth stands and sixteen adjacent unthinned second-growth Douglas fir (Pseudotsuga menziesii (Mirabel) Franco.) stands. The stands were thinned...

Resource Type:

Masters Thesis

Full Text:

Location of the study sites in the Coast Range and Cascade Mountains of Oregon 9 2 Layout of plot 14 3
Quantification of vegetation diversity and variation on intact and degraded rangelands

Creator:

Dysart, Patricia L.

Abstract:

Vegetation diversity in the Wyoming big sagebrush/Thurber needlegrass (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young/Achnatherum thurberianum (Piper) Barkworth. syn. Stipa thurberiana Piper) plant association was studied across a condition class gradient in southeastern Oregon. All observable vascular plant species were counted during 6 seasons and 2 years and diversity...

Resource Type:

Dissertation

Full Text:

obtained between the amount of cover of any of the soil surface types and range site condition