Inventory of benthic macroinvertebrates diversity in the Peti Environmental Station Reservoir of Minas Gerais, Brazil

Authors

  • Filipe Leão Morgan da Costa
  • Augusto Oliveira
  • Marcos Callisto

Abstract

The aim of this study was to inventory the diversity of benthic macroinvertebrates of the reservoir of the Peti Environmental Station in Minas Gerais State through the evaluation of these communities in space and temporal scales during the rainy and dry periods from June - 2002 up to June - 2004. The Peti reservoir has almost 50 years and is used for hydropower generation. The benthic macroinvertebrates are an important tool for the evaluation of water quality and environment monitoring through inventories of diversity and data on community structure. A total of 16 taxa was found and the most abundant groups were Chaoboridae (47,51 %), the Chironomidae genera Coelotanypus (15,1%) and Chironomus (2,77%), Bivalvia (19,11%) and Oligochaeta (9,54%). There were no signifi cant variations (R = 0,1927; p >0,05) for the biotic data among the sampling stations during the studied periods. The evaluation of the distribution and structure of the benthic community showed that the quality of the reservoir’s water is preserved, because there was no predominance of bad quality indicator organisms. This situation is due to the constant oxygenation of the hypolimnion which is probably related with the reservoir operation.

Key words: benthic communities, reservoir, inventory.

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Published

2021-06-15

Issue

Vol. 1 No. 1 (2006): May/Agust

Section

Articles

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