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Filtering by: Degree Field Forest Science Subject Forest ecology

A new index for describing the structural complexity of forests

Creator:

Zenner, Eric K.

Abstract:

Despite the critical ecological roles of structural features in forests, ecologically relevant quantitative measures of structure that allow comparisons among forest stands are still limited. A new index, the structural complexity index (SCI), was developed to characterize and compare the structural complexity of different forests. Point patterns of stem-mapped trees...

Resource Type:

Dissertation
Assessing the influence of silvicultural practices on Douglas-fir nutrition and stemwood production

Creator:

Reid, Paula W.

Abstract:

Nitrogen, phosphorus and sulfur concentrations were measured in the soil, foliage and litter of Douglas-fir growing in pure Douglas-fir and mixed conifer stands. On four sites of contrasting fertility and climatic conditions, plots had been modified by the introduction of alder, thinning, or by a single application of nitrogen fertilizer...

Resource Type:

Masters Thesis
Ectomycorrhizal populations on a chronosequence of disturbed areas in the central Cascades

Creator:

Meyer, Michele Marie

Abstract:

A greenhouse bioassay was used to investigate effects of natural and manmade disturbances on native ectomycorrhizal populations of Douglas-fir and western hemlock on a steep southeast slope in the west central Cascade Mountains. Total and mycorrhizal root tips were counted on seedlings grown in soils collected from (a) two 100+...

Resource Type:

Masters Thesis