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Is size structure a good measure of future trends of plant populations? an empirical approach using five woody species from the Cerrado (Brazilian savanna) Acta Botanica
Virillo,Carolina Bernucci; Martins,Fernando Roberto; Tamashiro,Jorge Yoshio; Santos,Flavio Antonio Maës dos.
Size distributions in woody plant populations have been used to assess their regeneration status, assuming that size structures with "reverse-J" shapes represent stable populations. We present an empirical approach of this issue using five woody species from the Cerrado. Considering count data for all plants of these five species over a 12-year period, we analyzed size distribution by: a) plotting frequency distributions and their adjustment to the negative exponential curve and b) calculating the Gini coefficient. To look for a relationship between size structure and future trends, we considered the size structures from the first census year. We analyzed changes in number over time and performed a simple population viability analysis, which gives the mean...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gini coefficient; Population dynamics; Reverse-J shape; Population viability analysis.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000300012
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