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Filtering by: Subject Defoliation -- Oregon Degree Level Master's Rights Statement Copyright Not Evaluated

The effects of defoliation on yellow starthistle (Centaurea solstitialis L.) reproductive capacity

Creator:

Schumacher, Stacy

Abstract:

Yellow starthistle (Centaurea solstitialis L.) is an introduced Asteraceae that has become established on 10 million acres in the Pacific Northwest and California. This weed functions as an annual or short-lived perennial and depends on seeds for reproduction. Strategies of control that reduce plant fitness or lower seed production or...

Resource Type:

Masters Thesis

Full Text:

plant following four different defoliation treatments in northeastern Oregon 36 6. Seedhead diameter
The effects of defoliation on Bromus tectorum seed production and growth

Creator:

Mayer, Kara Hempy

Abstract:

Cheatgrass (Bromus tectorum L.) is a widespread exotic weed in the Intermountain sagebrush steppe. An annual grass, it is highly prolific and very competitive with native perennial grass seedlings. A clipping experiment carried out at two cheatgrass-dominated sites (Lincoln Bench and Succor Creek) in eastern Oregon analyzed effects of defoliation...

Resource Type:

Masters Thesis

Full Text:

-dominated sites (Lincoln Bench and Succor Creek) in eastern Oregon analyzed effects of defoliation on
The effects of red alder leaf fall on the water color and other water quality characteristics of a small watershed in northwest Oregon

Creator:

Taylor, Robert Lynn

Abstract:

This study was initiated to make some preliminary evaluations of the effects of red alder (Alnus rubra, Bong.) leaf fall on stream water quality, particularly water color. Laboratory tests were also conducted to better understand the effects of leaf loading, duration of leaf leaching, and type of leaching on changes...

Resource Type:

Masters Thesis