The future of longleaf pine in a mixed pine-oak forest

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" The future of longleaf pine in a mixed pine-oak forest "
L. C. Kaiser R. L. Sass

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	1113145
Doc. No	:	TLpq238176003
Main Entry	:	L. C. Kaiser
	:	R. L. Sass
Title & Author	:	The future of longleaf pine in a mixed pine-oak forest\ L. C. KaiserR. L. Sass
College	:	Rice University
Date	:	1996
student score	:	1996
Degree	:	M.A.
Page No	:	154
Abstract	:	A mixed pine-oak stand in the Turkey Creek Unit of the Big Thicket National Preserve was logged in 1929-1930 and has experienced no fires since at least 1974. Stand basal area, density, and species richness increased from 1980-1993. A stage projection of the longleaf pine population at the site indicates the population will slowly decline (usd\lambdausd = 0.9957) after an initial increase in population size as the population approaches stable size class distribution. Survivorship in the largest size class, 50+ cm dbh, had the largest effect on the outcome. Variations on the base model with potential stronger negative effects from fire suppression reduced usd\lambdausd only slightly. Alternatively, small changes in demographic characteristics reflecting positive effects of fire raised usd\lambdausd above 1.00. The modeling results suggest that the population is resilient to long-term unfavorable conditions because of the longevity of individual trees.
Subject	:	Big Thicket
	:	Biological sciences
	:	Botany
	:	Ecology
	:	Forestry
	:	Texas