Species diversity: Concept,measurement, and response to clearcutting and site-preparation |
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| Authors: | Benee F Swindel Louis F Conde Joel E Smith |
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| Institution: | 1. Southeastern Forest Experiment Station, U.S. Department of Agriculture Forest Service, Gainesville, FL 32611 U.S.A.;2. Kalamazoo, MI 49009 U.S.A.;3. School of Forest Resources and Conservation, University of Florida, Gainesville, FL 32611 U.S.A. |
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| Abstract: | A review of aspects of diversity recently introduced in the statistical literature by Patil and Tallie is given: species diversity as an average property of a community is defined; the property averaged is identified as species rarity; and relations between common indices of diversity and associated measures of rarity are illuminated. This paper also computes common indices of diversity from substantial empirical data collected before clearcutting and site-preparation under two management regimes and for 3 years following planting of slash pine (Pinus elliottii) to illustrate that the initial response to these forest operations is increased species diversity, i.e., increased species rarity. This response may be expected whenever clearcutting and site preparation reduces but does not eliminate previously abundant, late-successional species and permits the reappearance of early-successional species, including forbs and grasses. |
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