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Filtering by: Advisor Larson, Larry Advisor Larson, Larry

Distribution and behavior of cattle grazing riparian pastures

Creator:

Wilson, Marie A. (Marie Annette)

Abstract:

One second GPS collars were deployed on cattle in three different pastures at three separate times during the year. In each riparian pasture the vegetative communities and stream bank edge were digitally mapped using low elevation aerial photographs and checked in the field for accuracy. A 5 m buffer zone...

Resource Type:

Masters Thesis

Full Text:

: . Larry L. Larson Douglas E. Johnson One second GPS collars were
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:

as 10,000 seeds (Maddox 1981). Sheley and Larson (1994) observed a seed output of2l,600 seeds m2 and
Elevation, thermal environment, and stream temperatures on headwater streams in northeastern Oregon

Creator:

Meays, Cynthia L.

Abstract:

A case study examining the relationship between stream temperatures and the thermal environment through which streams flow was conducted on the headwaters of 4 tributaries of the Burnt River (Barney, Elk, Greenhorn, and Stevens Creeks) in northeastern Oregon during July through August 1998 and 1999. Barney Creek and Stevens Creek...

Resource Type:

Masters Thesis

Full Text:

. To Dr. Larry Larson and Dr. Michael Borman, thank you for being my co- major professors. Thank you