The Assessment of Diversity of Benthic Macroinvertebrates of a Stream from East Blacksea Basin, Turkey

Öz

This research was aimed to assess the diversity of benthic macroinvertebrates and some physico-chemical water parameters of Fırtına Stream of East Blacksea Basın and carried out between November 2014 and August 2015. Mud and water samples were taken for one year from selected six stations seasonally (November-February-May-August) whereas from the upstream to the flowing to the sea. Water temperature, pH, dissolved oxygen and conductivity were measured in situ. The results were evaluated according to Turkish Surface Water Quality Regulation and Fırtına Stream had high water quality. The benthic macroinvertebrates consisted of the genusus Ecydonorous (Ephemeroptera, Heptaginiidae), Sericostoma (Trichoptera, Sericostomatidae), Tipula, Tabanus ve Chironomus (Diptera, Tipulidae, Tabanidae, Chironomidae) from Insecta class. These organisms were seen in unpolluted and slightly polluted waters. The proportionally distribution of the organisms were as Sericostomatidae (83%), Tipulidae (14%), Heptaganiidae (2%) ve Tabanidae (1%), respectively. Diversity index (H) value was found to be low between 0 and 0.68. Biotic index (BMWP) score was also low and in the Class IV category (polluted water). It was thought that the species richness of benthic macroinvertebrates and their abundances were limited by the amount of organic material.

Anahtar Kelimeler

• running water
• benthic macroinvertebrates
• water quality parameters
• diversity index
• biotic index

Kaynakça

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