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Filtering by: Subject Plant competition -- Longitudinal studies

Competitive interactions between Douglas-fir and red alder seedlings : growth analysis, resource use, and physiology

Creator:

Shainsky, Lauri J.

Abstract:

Competitive interactions between Douglas-fir seedlings (Pseudotsuga menziesii), and seedlings of a nitrogen-fixing hardwood associate, red alder (Alnus rubra), were investigated in an addition series experiment. The primary objective of the research was to identify and quantify key processes underlying intra- and interspecific competitive interactions of Douglas-fir and red alder seedlings....

Resource Type:

Dissertation
The impact of grazing on forage quantity, quality and foliar cover of the herbaceous vegetation in the Mamora Cork Oak Forest, Morocco

Creator:

Mejjati-Alami, Mohammed

Abstract:

This research was conducted in the Mamora cork oak forest of Morocco to: (1) Describe the impacts of sheep grazing (none, 35% use, 70% use) in March, April, May and June of 1987 and 1988 on seasonal forage production; (2) evaluate the effects of these factors on annual changes in...

Resource Type:

Dissertation

Full Text:

grazing occurs early in the season. This study developed the first information for this area related to
Relations between the distribution of Canada geese and the quantity and quality of forage at W. L. Finley National Wildlife Refuge, 1984-1987

Creator:

Naughton, Maura

Resource Type:

Masters Thesis

Full Text:

through 1986-87. The objectives of the study were: (1) determine the size and subspecies composition of