Uma generalização da distribuição do índice de diversidade generalizada por Good com aplicação em Ciências Agrárias

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Diversity as a concept was first introduced by Williams in Fisher et al. (1943). Later, Good (1953, 1982) proposed a generalized index that included as special cases both Shannons and Simpsons indices. Baczkowski et al. (1997, 1998) generalized the proposed generalization deriving the first four moments and then obtaining a distribution prior to the general index for Good (BACZKOWSKI et al., 2000). Therefore, is proposed a new generalization that, in addition to the indices the Shannon and Simpson as special cases, includes more general indices such as the unfamiliar (PATIL &TAILIIE, 1982). The moments of h(a,b,d) presented here extend the results presented in Baczkowski et al. and Bowman et al. for a class of diversity indices of more general and it is concluded then that while the distribution of index Shannon can be approximated by a Gaussian distribution, if any difference between abundance of species, to more general values of (a,b,d), it is suggested a distribution of type I as the most appropriated. The results are also consistent with those presented for real populations, as in Heip &Engels (1974), especially when it examines the index of Shannon.

ASSUNTO(S)

goods generalization Índice de simpson ciências agrárias diversidade Índice de shannon simpsons index diversity generalização de good biometria shannons index

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