Diversity and disturbance in a colorado subalpine forest

Melissa Savage, Marion Reid, Thomas T. Veblen

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Diversity of understory plant species in a disturbed subalpine forest in the Colorado Rockies was examined to explore the hypothesis that intermediate levels of disturbance generate and maintain high levels of diversity. In 1974, hurricane-force winds created a blowdown with three types of canopy conditions—severely disturbed, moderately disturbed, and lightly disturbed. Data on tree-stand structure were taken in order to characterize the gradient of canopy disturbance. Species diversity of understory plants was estimated using both alpha diversity and beta diversity. The stand canopy with intermediate damage had higher numbers of both understory species and individuals, as well as higher beta diversity compared with other sites. This suggests that intermediate levels of disturbance severity may offer more microhabitats, at least temporarily, for a wider range of species.

Original languageEnglish (US)
Pages (from-to)240-249
Number of pages10
JournalPhysical Geography
Volume13
Issue number3
DOIs
StatePublished - Jan 1 1992
Externally publishedYes

Keywords

  • Colorado Rocky Mountains
  • Diversity
  • Intermediate disturbance
  • Subalpine forest

ASJC Scopus subject areas

  • Environmental Science(all)
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Earth and Planetary Sciences(all)

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