Padrões de diversidade em répteis esquamatas

Título: Patterns of diversity of Neotropical squamate reptile species with emphasis on the Brazilian Amazon and the conservation potential of indigenous reserve.

Revista Conservation Biology, Vol. 9, No. 4 (Aug., 1995), pp. 873-901

Resumo: We present new distibutional data for squamate reptiles (amphisbaenians, lizards, and snakes) from several Neotropical sites and estimate species (alpha) diversity at each site. Species compositions at all localities were used to estimate similarity in species richness within and between each of the major regions sampled: Central American lowland forests, Amazonia, and South American dryland forests. We used these estimates to derive maps summarizing overall regional patterns (beta diversity) of squamate richness. Both groups clearly reveal distinct faunal divisions among the three regions. Within Amazonia, lizards and snakes show a clear division in species composition between a “western edge” cluster of sites adjacent to eastern Andean slopes and all other localities in the central and eastern regions. Within this east?central block of sites, a further division is evident between localities north and south of the …

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