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Permanent link (DOI): https://doi.org/10.7939/R3HD2D

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The influence of forest structure on light and regeneration in complex coniferous stands Open Access

Descriptions

Other title
Subject/Keyword
residual forest structure
British Columbia
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Lochhead, Kyle
Supervisor and department
Dr. Comeau, Phil (Renewable Resources)
Examining committee member and department
Dr. Macdonald, Ellen (Renewable Resources)
Dr. Silins, Uldis (Renewable Resources)
Dr. Gamon, John (Biological Sciences)
Department
Department of Renewable Resources
Specialization

Date accepted
2011-01-31T21:37:36Z
Graduation date
2011-06
Degree
Master of Science
Degree level
Master's
Abstract
Quantification of the effects of residual forest structure on the understory light environment is needed to guide silvicultural strategies that facilitate regeneration. In this study I measured understory light using various methods in a dry, uneven-aged mixed conifer forest in British Columbia, Canada. These measurements were collected from an experiment established in 1994 where four residual basal area treatments (8m2/ha, 16m2/ha, 24m2/ha and uncut) effectively created a gradient of structure. Estimates of stand structure including density (N), basal area (G) and stand density index (SDI) explained 12 to 38% of the variability in understory light levels. Stand variables that heavily weighted the influence of larger trees on light attenuation were weak predictors of understory light. Incorporating variables describing the composition and size of trees in the overstory greatly increased the predictive power of the models. The abundance and growth of regeneration was strongly positively related to both light and understory vegetation.
Language
English
DOI
doi:10.7939/R3HD2D
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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