Browsing Theses, Dissertations and Student Research Papers (College of Forestry, 1984/85 to Present) by Subject "Nitrogen -- Fixation"

Now showing items 1-3 of 3

Association of nitrogen-fixing bacteria with ectomycorrhizae in Douglas-fir

Niu, Chih-Hao (1987-03-17)

Many higher plants have mycorrhizae associated with their roots. These structures are often essential for survival and growth (Harley & Smith 1983). Mycorrhizae are known for the abilities to enhance nutrient absorption. ...
Levels of asymbiotic nitrogen fixation in leaf litter in Northwest forests

Heath, Brian E. (1985-01-17)

Asymbiotic N fixation in leaf litter in the Northwest was assayed by acetylene reduction. Annual N input measured by periodic sampling in a young Willamette Valley Douglas-fir plantation at Adair, Oregon was 1.08 +_.13 k ...
Seasonal estimates of nitrogen fixation by Alnus rubra and Ceanothus species in western Oregon forest ecosystems

Kim, Dong Yeob (1987-05-04)

Two case studies of 5 ecosystems were used to examine the nitrogen fixation rate of red alder (Alnus rubra Bong.), varnishleaf (Ceanothus velutinus var. laevigatus (Hook.) T. & G.), deerbrush (C. i ntegerrimus H. & A.), ...