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Filtering by: Subject Rangelands -- Oregon, Eastern -- Revegetation Degree Level Doctoral

Associations Between Crested Wheatgrass and Native Vegetation in Southeastern Oregon : An Investigation of Co-establishment, Environment, Seeding History, and Livestock management

Creator:

Nafus, Aleta M.

Abstract:

Crested wheatgrass (Agropyron cristatum [L] Gaertm), an introduced bunchgrass, has been seeded on over 5 million hectares of degraded rangeland in western North America because it establishes more readily than native bunchgrasses. Because crested wheatgrass stands are associated with native species displacement and low biological diversity, there is substantial interest...

Resource Type:

Dissertation

Full Text:

Vegetation in Southeastern Oregon: An Investigation of Co-establishment, Environment, Seeding History, and
Identification of restoration potential on southwestern Oregon rangelands

Creator:

Barrington, Mack R.

Abstract:

The objectives of this research were to 1) evaluate the establishment and peak standing crop of Berber Orchardgrass (Dactylis glomerata var. "Berber"), Palestine Orchardgrass (Dactylis glomerata var. "Palestine"), and Sheep Fescue (Festuca ovina var. "Covar") ; 2) to assess establishment and production changes resulting from environmental gradients (elevation, slope, aspect,...

Resource Type:

Dissertation

Full Text:

Roundy (1991) observed that revegetation processes in rangeland communities are regulated by episodic