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Turkish Journal of Zoology

DOI

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Abstract

The longitudinal and seasonal distribution of macroinvertebrates and the physical and chemical variables of Yuvarlak Stream in the Köycegiz-Dalyan Protected Area in South-Western Turkey were studied between April 1992 and April 1993. The diversity, frequency, dominance, abundance and similarity of macroinvertebrates through the year were recorded. In addition, the Belgian Biotic Index was used as a biological criterion for the assessment of water quality for the first time in Turkey. According to the physico-chemical variables and the distribution of benthic macroinvertebrates, continuous slight and moderate organic pollution exists in the stream. The monitoring of the water quality of Yuvarlakçay Stream is also necessary for the protection of water quality in meromictic Lake Köycegiz.

Keywords

South-Western Turkey, natural protected area, Yuvarlakçay Stream, benthic macroinvertebrates, water quality

First Page

69

Last Page

80

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