Karasu Deresi’nin (Karadeniz) bentik makroomurgasız çeşitliliği ve su kalitesi

Çalışma; Karasu Çayı'nda (Türkiye'nin Karadeniz Bölgesi, Sinop İli) yürütülmüştür. Bu çalışmanın amacı, akarsuyun bentik makroomurgasız tür kompozisyonunu belirlemek, bazı çevresel özellikleri (su sıcaklığı, pH ve çözünmüş oksijen) ile birlikte akarsuyun trofik seviyesini değerlendirmektir. Makrobentik omurgasızların ve çevresel değişkenlerin örneklemesi, Şubat 2013 - Ocak 2014 tarihleri arasında 10 istasyonda aylık olarak gerçekleştirilmiştir. Sonuç olarak, 18260 örnek incelenmiş ve 175 takson belirlenmiştir. Tür zenginliği açısından Chironomidae ve Oligochaeta sırasıyla 48 ve 38 takson ile en yüksek gruplardır. BMWP ve ASPT endeksleri, tüm istasyonların “hafif kirli (Sınıf II)” veya “kirlenmemiş (Sınıf I)” su kalitesi seviyelerine ait olduğunu göstermektedir.

Diversity of benthic macroinvertebrates and water quality of Karasu Stream (Black Sea)

The study was conducted in Karasu Stream (Sinop Province, Black Sea Region of Turkey). The purpose of this study is, to determine the benthic macroinvertebrate composition of the stream, together with some of its environmental characteristics (water temperature, pH and dissolved oxygen) to evaluate the trophic level of the stream. Samplings of benthic macroinvertebrates and environmental variables were performed monthly at ten stations between February 2013 and January 2014. As a result, 18260 specimens were investigated and 175 taxa were determined. Chironomidae and Oligochaeta were the higher groups in terms of species richness with 48 and 38 taxa, respectively. The BMWP and ASPT indices indicate that all the stations belong to “slightly polluted (Class II)” or “unpolluted (Class I)” water quality levels.

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