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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Patterns of species diversity in different spatial scales and spatial heterogeneity on beta diversity

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Author(s):
Caio J. R. S. Soares [1] ; Mauricio B. Sampaio [2] ; Francisco S. Santos-Filho [3] ; Fernando R. Martins [4] ; Flavio A. M. dos Santos [5]
Total Authors: 5
Affiliation:
[1] Universidade Estadual de Campinas. Departamento de Biologia Vegetal - Brasil
[2] Universidade Estadual de Campinas. Departamento de Biologia Vegetal - Brasil
[3] Universidade Estadual do Piauí. Centro de Ciências da Natureza - Brasil
[4] Universidade Estadual de Campinas. Departamento de Biologia Vegetal - Brasil
[5] Universidade Estadual de Campinas. Departamento de Biologia Vegetal - Brasil
Total Affiliations: 5
Document type: Journal article
Source: Acta Botanica Brasilica; v. 34, n. 1, p. 9-16, 2019-11-11.
Abstract

ABSTRACT Patterns of species diversity are essential to understand community structure. We aimed to determine species diversity and patterns of beta diversity in different spatial scales. We sampled three thousand individuals between the coordinates 22°10'S to 22°16'S and 47°47'W to 48°00'W to assess species diversity in three spatial scales (maximum distances of 80 m, 1,400 m, and 12,000 m), using the point-centered-quarter method. We partitioned gamma diversity into alpha and beta components. Beta diversity was partitioned into dissimilarities produced by spatial species turnover and nestedness. The contribution of beta diversity to gamma diversity was greater than that of alpha diversity in all scales, although the patterns of species diversity were similar for the evaluated scales, and was similar to that described for larger spatial scales. The sampled fragments presented means of 15 exclusive species and 47.5 species per fragment, and dissimilarities [β(SØR)=0.7] almost completely explained (94 %) by spatial species turnover. The results indicate that the remnant fragments are residual patches of an originally heterogeneous vegetation. The fragmentation processes could have progressed differently in each portion of the original vegetation, producing the current heterogeneous vegetation. Thus, there is a potential of high local species extinctions if the remnant fragments are deforested. (AU)

FAPESP's process: 12/17475-9 - Population dynamics and palm species' life history: a framework to estimate the fruit harvesting impacts
Grantee:Maurício Bonesso Sampaio
Support Opportunities: Scholarships in Brazil - Post-Doctoral