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Filtering by: Creator Colwell, Frederick Degree Field Rangeland Resources Non-Academic Affiliation Oregon State University. Graduate School

An interpretation of synecologic relationships in the Billy Meadows area of the Wallowa-Whitman National Forest

Creator:

Johnson, Charles G.

Resource Type:

Dissertation
Seasonal response of bitterbrush to burning and clipping in eastern Oregon

Creator:

Clark, Robert G.

Abstract:

Bitterbrush [Purshia tridentata (Pursh) DC] plants were burned or clipped, fall and spring, under different soil moisture conditions on two sites in east-central Oregon. Treatments, on plants of an erect growth form on the Juniperus/Artemisia-Purshia site resulted in 38% of the fall-clipped and 40% of the spring-clipped plants sprouting. None...

Resource Type:

Masters Thesis
Infiltration, soil erosion, nitrogen loss and soil profile characteristics of Oregon lands occupied by three subspecies of Artemisia tridentata

Creator:

Swanson, Sherman R.

Abstract:

Infiltration, soil erosion, nitrogen loss and soil profile characteristics were measured on 36 sites representing land occupied by Artemisia tridentata ssp. tridentate, wyomingensis, and vaseyana. Infiltration, soil erosion, and nitrogen loss were strongly correlated but highly variable. Soil loss, but not infiltration or nitrogen loss was significantly different between subspecies....

Resource Type:

Dissertation

Full Text:

watershed lightly rather than moderately." Daubenmire and Colwell (1942) described some edaphic changes