Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/11884
Tipo do documento: Artigo
Título: Distance decay of similarity in Neotropical diatom communities
Autor: Wetzel, Carlos Eduardo
Bicudo, Denise de Campos
Ector, Luc
Lobo, Eduardo Alexis
Soininen, Janne
Landeiro, Victor Lemes
Bini, Luis Mauricio
Abstract: Background: The regression of similarity against distance unites several ecological phenomena, and thus provides a highly useful approach for illustrating the spatial turnover across sites. Our aim was to test whether the rates of decay in community similarity differ between diatom growth forms suggested to show different dispersal ability. We hypothesized that the diatom group with lower dispersal ability (i.e. periphyton) would show higher distance decay rates than a group with higher dispersal ability (i.e. plankton). Methods/Principal findings: Periphyton and phytoplankton samples were gathered at sites distributed over an area of approximately 800 km length in the Negro River, Amazon basin, Brazil, South America (3u089000S; 59u549300W). Distance decay relationships were then estimated using distance-based regressions, and the coefficients of these regressions were compared among the groups with different dispersal abilities to assess our predictions. We found evidence that different tributaries and reaches of the Negro River harbor different diatom communities. As expected, the rates of distance decay in community similarity were higher for periphyton than for phytoplankton indicating the lower dispersal ability of periphytic taxa. Conclusions/Significance: Our study demonstrates that the comparison of distance decay relationships among taxa with similar ecological requirements, but with different growth form and thus dispersal ability provides a sound approach to evaluate the effects of dispersal ability on beta diversity patterns. Our results are also in line with the growing body of evidence indicating that microorganisms exhibit biogeographic patterns. Finally, we underscore that clumbing all microbial taxa into one group may be a flawed approach to test whether microbes exhibit biogeographic patterns.
Palavras-chave: Community similarity
Dispersal ability
País: Estados unidos
Instituição: Public Library of Science
Unidade acadêmica: Instituto de Ciências Biológicas - ICB (RG)
Citação: WETZEL, Carlos E.; BICUDO, Denise de C.; ECTOR, Luc; LOBO, Eduardo A.; SOININEN, Jane; LANDEIRO, Victor L.; BINI, Luis M. Distance decay of similarity in Neotropical diatom communities. Plos One, San Francisco, v. 7, n. 9, p. e45071, Sept. 2012.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1371/journal.pone.0045071
Identificador do documento: 10.1371/journal.pone.0045071
URI: http://repositorio.bc.ufg.br/handle/ri/11884
Data de publicação: Set-2012
Aparece nas coleções:ICB - Artigos publicados em periódicos

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