A population model for a long-lived, resprouting chaparral shrub: Adenostoma fasciculatum

Ecological Modelling
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Abstract

Extensive stands of Adenostoma fasciculatum H.&A. (chamise) in the chaparral of California are periodically rejuvenated by fire. A population model based on size-specific demographic characteristics (thinning and fire-caused mortality) was developed to generate probable age distributions within size classes and survivorship curves for typical stands. The model was modified to assess the long term effects of different mortality rates on age distributions. Under observed mean mortality rates (28.7%), model output suggests some shrubs can survive more than 23 fires. A 10% increase in mortality rate by size class slightly shortened the survivorship curve, while a 10% decrease in mortality rate by size class greatly elongated the curve. This approach may be applicable to other long-lived plant species with complex life histories.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title A population model for a long-lived, resprouting chaparral shrub: Adenostoma fasciculatum
Series title Ecological Modelling
DOI 10.1016/0304-3800(86)90007-4
Volume 34
Issue 3-4
Year Published 1986
Language English
Publisher Elsevier Science
Publisher location Amsterdam
Description 13 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Ecological Modelling
First page 245
Last page 257