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Filtering by: Decade 1980-1989 Subject Forest litter -- Biodegradation

Biomass dynamics of dead Douglas-fir and western hemlock boles in mid-elevation forests of the Cascade Range

Creator:

Graham, Robin Lee Lambert

Abstract:

The rate and manner of bioniass loss from decomposing Douglas-fir and western hemlock boles in mid-elevation forests of the central Cascade Range were measured. Bole bark and wood were considered separately. Loss of bole wood due to respiration was measured by change in bole wood density. Loss of bole wood...

Resource Type:

Dissertation
Levels of asymbiotic nitrogen fixation in leaf litter in Northwest forests

Creator:

Heath, Brian E.

Abstract:

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 kg/ha. Using different calculating methods, six other annual estimates at the Adair site ranged from 0...

Resource Type:

Masters Thesis