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Yzel Rondon Súarez ;Acta Scientiarum. Biological Sciences 2010, 32 3

Autor: Karina Keyla Tondato

Fuente: http://www.redalyc.org/


Introducción



Acta Scientiarum.
Biological Sciences ISSN: 1679-9283 eduem@uem.br Universidade Estadual de Maringá Brasil Tondato, Karina Keyla; Rondon Súarez, Yzel Temporal changes in fish species composition of headwater streams of the upper Paraguay and Paraná basins, Brazil Acta Scientiarum.
Biological Sciences, vol.
32, núm.
3, 2010, pp.
279-284 Universidade Estadual de Maringá .png, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=187114391010 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative DOI: 10.4025-actascibiolsci.v32i3.6160 Temporal changes in fish species composition of headwater streams of the upper Paraguay and Paraná basins, Brazil Karina Keyla Tondato1 and Yzel Rondon Súarez2* 1 Programa de Pós-graduação em Biologia Animal, Instituto de Biociências, Universidade Federal do Rio Grande Sul, Porto 2 Alegre, Rio Grande do Sul, Brazil.
Laboratório de Ecologia, Universidade Estadual de Mato Grosso do Sul, Rod.
DouradosItahum, km 12, 79804-970, Dourados, Mato Grosso do Sul, Brazil.
*Author for correspondence.
Email: yzel@uems.br ABSTRACT.
This study was carried out in headwater streams in the Paraguay and Paraná river basins, with bi-monthly samples from January to November 2004, aiming to quantify the influence of environmental factors on the temporal rate of turnover in species composition of the fish communities.
The environmental variables explained 73.5% of the variation in beta diversity and 52.5% of the variation in mean dissimilarity.
Altitude was the only environmental descriptor that significantly explained the variation in beta diversity and mean dissimilarity in both basins. Key words: community ecology, neotropical streams, environmental variables. RESUMO.
Alteração temporal na composição de...





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