Caracterização limnológica e distribuição espacial de insetos aquáticos, das ordens Ephemeroptera, Plecoptera e Trichoptera, na bacia do Rio Meia Ponte, Goiás, Brasil
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2003-11-05
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Universidade Federal de Goiás
Resumo
The Meia Ponte River is one of the most important water sources in Goiás State,
supplying water for almost half of its population. However, its watershed has been strongly
affected by intense agriculture practice, cattle breeding, and industrial and domestic effluent
discharges. In this paper, 34 sites in this watershed were chosen to the development of a
limnological study. In the first chapter, the limnological characterization of these sites is
presented, including 20 physical-chemical, microbiological and physiographic variables, during
the rainy and dry seasons of 2001. The sites located at the Meia Ponte River downstream from
Goiânia municipality showed the worst water quality. Temporal and spatial patterns were
observed. In the second chapter, the influence of abiotic factors on Ephemeroptera, Plecoptera
and Trichoptera community was accessed during the dry season of 2001. Physiographic variables
were the most important factor for community variation (mainly substrate type and water
velocity). Physical-chemical variables had a secondary effect on community structure.
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SILVEIRA, Flávio Luiz de Souza. Limnological characterization and spatial distribution of aquatic insects, the Ephemeroptera, Plecoptera and Trichoptera in River Basin Half
Bridge, Goias, Brazil. 2003. 68 f. Dissertação (Mestrado em Ciências Biolóicas) - Universidade Federal de Goiás, Goiânia, 2003.