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Métodos estatísticos e estrutura espacial de populações: uma análise comparativa = Statistic methods and population spatial structure: a comparative analyses
Métodos estatísticos e estrutura espacial de populações: uma análise comparativa = Statistic methods and population spatial structure: a comparative analyses
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Métodos estatísticos e estrutura espacial de populações: uma análise comparativa = Statistic methods and population spatial structure: a comparative analyses
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Métodos estatísticos e estrutura espacial de populações: uma análise comparativa = Statistic methods and population spatial structure: a comparative analyses
Métodos estatísticos e estrutura espacial de populações: uma análise comparativa = Statistic methods and population spatial structure: a comparative analyses

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Métodos estatísticos e estrutura espacial de populações: uma análise comparativa = Statistic methods and population spatial structure: a comparative analyses
Métodos estatísticos e estrutura espacial de populações: uma análise comparativa = Statistic methods and population spatial structure: a comparative analyses
Journal Article

Métodos estatísticos e estrutura espacial de populações: uma análise comparativa = Statistic methods and population spatial structure: a comparative analyses

2006
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Overview
O presente estudo teve por objetivo comparar os resultados de distribuição espacial obtidos entre os métodos clássicos e os métodos que estimam a variância entre parcelas. Foram analisadas duas espécies, Vernonia aurea e Duguetia furfuracea. Foram utilizados a Distribuição de Poisson (padrão aleatório), a Distribuição Binomial Negativa (padrão agregado) e os métodos BQV, TTLQV e PQV (variância entre parcelas), bem como a razão variância:média (I), coeficiente de Green (Ig) e o índice de dispersão de Morisita (Im). Ambas metodologias detectaram padrão de distribuição espacial agregado para as populações analisadas, com resultados similares quanto ao nível de agregação, além de complementação das informações, em diferentes escalas, entre os métodos clássicos e de variância entre parcelas. Desse modo, recomenda-se a utilização desses métodos estatísticos em estudos de estrutura espacial, uma vez que os testes são robustos e complementares e os dados são de fácil coleta em campo.This study aims to compare the results of spatial structure obtained between the classic and quadrat variance methods. Two species were analised, Vernonia aurea and Duguetia furfuracea. The Poisson distribution (random pattern), the Negative Binomial distribution (aggregate pattern), the BQV, TTLQV and PQV methods, the ratiovariance: mean (I), the Green coefficient (Ig) and the Morisita’s index of dispersion (Im) were used to detect the populations spatial pattern. An aggregated spatial pattern distribution was detected through both methodologies, with similar results as for the aggregation level and the complementation of the information in different scales between classic and quadrat variance methods. Thus, the utilization of these statistic methods in studies of the spatialstructure is recommended, given that tests are robust and complementary and field data samples are easy to collect.