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Filtering by: Creator Duncan, John Degree Level Master's Subject Douglas fir -- Oregon -- Growth

Interference dynamics in mixed red alder/Douglas-fir forests

Creator:

D'Amato, Anthony W.

Abstract:

This study characterized the nature and dynamics of interference in mixed red alder (Alnus rubra Bong.)/Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) stands in the Pacific Northwest, USA. Long-term spatial and tree measurements from the Cascade Head (CH) and H.J. Andrews (HJA) Experimental Forests in western Oregon and Delezene Creek (DC), Washington...

Resource Type:

Masters Thesis
Effects of fertilization, vegetation control, and sulfur on swiss needle cast and growth of coastal Douglas-fir saplings

Creator:

Crane, Gabriel A.

Abstract:

A series of studies and replicated field sites were implemented in the Oregon Coast Range within Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) sapling plantations infected with varying levels of Swiss needle cast (SNC) caused by the fungus, Phaeocryptopus gaeumannii (Rhode) Petrak (PG). This research was conducted to understand the effects of...

Resource Type:

Masters Thesis
Alterations in Douglas-fir crown structure, morphology, and dynamics imposed by the Swiss needle cast disease in the Oregon Coast Range

Creator:

Weiskittel, Aaron R.

Abstract:

Plants respond to defoliation in many different and complex ways, depending on their growth habit and form as well as the extent and duration of the defoliation. Tree crowns have been shown to be quite sensitive to disturbances such as defoliation, however quantitative relationships have rarely been developed, making the...

Resource Type:

Masters Thesis

Full Text:

probably ever intended to do. I also gratefully acknowledge John Moore and Duncan Wilson for helping me