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Filtering by: Subject Ponderosa pine -- Oregon -- Growth Committee Member Tappeiner, John

Competitive interactions between Douglas-fir or ponderosa pine and whiteleaf manzanita

Creator:

White, Diane E.

Abstract:

Juvenile Douglas-fir, ponderosa pine, and whiteleaf manzanita growth in southwest Oregon varied with density of co-developing manzanita and presence of herbaceous cover. Plant xylem pressure potential and stomatal conductance of each species was responsive to competition-induced depletion of soil water. Rates varied among species. The best correlations with growth usually...

Resource Type:

Dissertation
Recruitment of ponderosa pine seedlings beneath partial overstories

Creator:

Keyes, Christopher R.

Abstract:

The objective of this project was to investigate the fate of ponderosa pine regeneration from seed to established seedling, and to determine the relative influences of several important stand elements on those fates. The project was carried out in a series of observational and experimental recruitment studies in central Oregon....

Resource Type:

Dissertation