The Use Of Taxonomic Diversity Indices In The Assessment Of
Perturbed Community Recovery
Author(s)
R. E. Desrochers & M. Anand
Abstract
The use of taxonomic diversity indices in the
assessment of perturbed community recovery
R. E. Desrochers & M. Anand
Biology Department, Laurentian University, Sudbury, Ontario, Canada
Abstract
The spatial dynamics of ecological diversity are studied in two regions (Sudbury,
Canada and Harjavalta, Finland) damaged by air pollution from copper and
nickel smelting. Perturbation from pollution is assumed to be most intense near
the source and to decrease with distance. Monitoring sites were therefore
selected to traverse these pollution gradients. Using Rhyi's generalized entropy
as a measure of diversity, a monotonic pattern of increasing diversity is
discovered at the recovering Canadian sites but not at the Finnish sites. Quadratic
entropy and a related information-theoretical measure of taxonomic diversity,
taxonomic entropy, were calculated in the hope that these diversity indices,
which incorporate taxonomic distances, would provide a better understanding of
these unexpected results. Quadrat
Keywords
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