Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Degree Field Forest Management Subject Forest ecology

Juvenile development of Douglas-fir, red alder and snowbrush associations in Western Oregon

Creator:

El Hassan, Babiker Ahmed

Abstract:

The juvenile development of Douglas-fir, red alder and snowbrush associations was investigated in western Oregon. The relationship between Douglas-fir and red alder was studied and compared in the Coast, Willamette Valley and Cascade regions. Snowbrush- Douglas-fir stands were sampled in the western Cascades. Alder- Douglas-fir relationships were studied on clearcuts...

Resource Type:

Masters Thesis
Some factors affecting the distribution of organic arsenical silvicides in the forest ecosystem

Creator:

Greaves, Robert D.

Abstract:

The initial distribution of organic arsenical silvicides was measured in the trees, litter and soil of four forest types in the Pacific Northwest following a standard, precommercial chemical thinnning. Factors which influenced the persistence, movement or fate of these compounds were noted and used to evaluate differences in the generalized...

Resource Type:

Masters Thesis
Snowbrush, Ceanothus velutinus Dougl., its ecology and role in forest regeneration in the Oregon Cascades

Creator:

Zavitkovski, J.

Abstract:

The ecological and silvicultural importance of snowbrush, Ceanothus velutinus, in the areas west of the summit of the Oregon Cascades was studied. Particular attention has been given its nitrogen- fixing ability under both field and greenhouse conditions. On west slopes of the Oregon Cascades snowbrush occurs above 2, 500 feet...

Resource Type:

Dissertation