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Filtering by: Subject Oregon oak -- Oregon -- Willamette River Valley

Bird Abundance and Microhabitat Associations with Oak Mistletoe in Willamette Valley Oak Woodlands

Creator:

Pritchard, Kyle R.

Abstract:

In the last 200 years there have been significant declines in the amount and structural complexity of oak-dominated forests and savannahs in the Pacific Northwest. Restoring oak systems often involves selectively thinning stands of oaks in order to reduce competition for sunlight. In choosing which trees to cut, land managers...

Resource Type:

Masters Thesis
Use of oak woodlands (Quercus garryana) for farm forestry and grazing in the Willamette Valley

Creator:

Hall, Frederick C.

Resource Type:

Masters Thesis
The frequency of occurrence of corticolous lichens on Quercus garryana in the Willamette Valley

Creator:

Saxton, Robert Howard

Abstract:

This study was made to present any evidence as to differences in the frequency of occurrence of corticolous lichens from east to west in the Willamette Valley on a bark substrate of Quercus Garryana. Twenty-four species of lichens were observed to be present within the grid area of the 100...

Resource Type:

Masters Thesis
Cavity resources in Oregon white oak and Douglas-fir stands in the mid-Willamette Valley, Oregon

Creator:

Gumtow-Farrior, Daniel L.

Abstract:

Previous studies of bird communities in the mid-Willamette Valley, Oregon, indicated that Oregon white oak (Ouercus garryana) stands supported more cavity-using bird species than sympatric stands of Douglas-fir (Pseudotsuga menziesii). Mature Oregon oak stands are being harvested and few are regenerating. I compared cavity availability for hole-using fauna among 10...

Resource Type:

Masters Thesis