Abstract

The southern oak woodland of southern California was analysed relative to the local distribution of the trees, density per acre, relative density, relative dominance, percentage of trees growing in close association to boulders, percentage of trees forked below breast height, frequencies of tree diameter and percentage of cover. These characteristics, with the exception of cover, were derived from measurements made using the wandering quarter method. Cover was computed from measurements made on aerial photographs.

A test for homogeneity applied to the distance measurements divided the woodland into two groups relative to local distribution. Both woodlands are non-random with one (dense oak woodland) more non-random than the other, (grass oak woodland). Density per acre and percentage of foliage cover further supports this observation. Dense oak woodland is about twice as dense as grass oak woodland. There is a difference of 7 between the percentages of cover of the two woodlands.

The woodlands consist chiefly of two species, coast live oak and the Engelmann oak. The ratios of one species to the other differs in the two woodland types. Engelmann oak is encountered nearly 90% of the time in grass oak woodland as compared to about 10% for coast live oak. The ratios of the two species is nearly 1 to 1 in dense oak woodland. The fact that the two species have different water requirements makes this last ratio problematic.

LLU Discipline

Biology

Department

Biology

School

Graduate School

First Advisor

Earl W. Lathrop

Second Advisor

Donald M. Brown

Third Advisor

Raymond E. Rykman

Degree Name

Master of Arts (MA)

Degree Level

M.A.

Year Degree Awarded

1967

Date (Title Page)

6-1967

Language

English

Library of Congress/MESH Subject Headings

Oak -- California; Coast live oak

Type

Thesis

Page Count

vii; 43

Digital Format

PDF

Digital Publisher

Loma Linda University Libraries

Usage Rights

This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.

Collection

Loma Linda University Electronic Theses and Dissertations

Collection Website

http://scholarsrepository.llu.edu/etd/

Repository

Loma Linda University. Del E. Webb Memorial Library. University Archives

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