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.
Earl W. Lathrop
Donald M. Brown
Raymond E. Rykman
Master of Arts (MA)
Year Degree Awarded
Date (Title Page)
Library of Congress/MESH Subject Headings
Oak -- California; Coast live oak
Loma Linda University Libraries
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.
Zuill, Henry A., "Structure of Two Cover Types of Southern Oak Woodland in California" (1967). Loma Linda University Electronic Theses, Dissertations & Projects. 819.
Loma Linda University Electronic Theses and Dissertations
Loma Linda University. Del E. Webb Memorial Library. University Archives