Influência da ação antrópica sobre a fauna de macroinvertebrados aquáticos em riachos de uma região de cerrado do sudoeste do Estado de São Paulo

Sara S. Cortezzi; Pitágoras da C. Bispo; Gabriel de P. Paciencia; Ricardo C. Leite

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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.)

Anthropic action influence on aquatic macroinvertebrates in streams from a cerrado region of Southwestern of the State of São Paulo, Brazil

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Author(s):	Sara S. Cortezzi ; Pitágoras da C. Bispo ^[2] ; Gabriel de P. Paciencia ; Ricardo C. Leite Total Authors: 4
Document type:	Journal article
Source:	IHERINGIA SERIE ZOOLOGIA; v. 99, n. 1, p. 36-43, 2009-03-00.
Abstract
The richness and spatial distribution of aquatic macroinvertebrates were studied in streams from a cerrado region, Assis, State of São Paulo, with the purpose of verifying the effect of the anthropic action on the fauna. The collections took place at the headwaters of the Ribeirão Água do Cervo (the main water supplier of the city of Assis). Nine collection stations were established in which ten standardized pebble packages were placed (equivalent volume, 300 cm³ each). After twenty-five days of exposure, the packages were removed from the stream. The macroinvertebrates associated to each of the pebble packages were removed and identified. The results showed a smaller richness in the most damaged station. There was not significant relation between the physicochemical factors and the fauna. The intensity of anthropic action was significantly related with the fauna. (AU)

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