Analysis of the zooplankton community by the Shannon-Weaver ındex in Kesikköprü Dam Lake, Turkey

Kesikköprü baraj gölü, 11 Rotifera, dokuz Cladocera ve sekiz Copepoda türüyle temsil edilen oligotrofik bir göldür. Kesikköprü Baraj Gölündeki zooplankton kommünitesinden alınan veriler Shannon -Weaver indeksine gore analiz edilmiştir, indeks değerleri zooplanktonik organizmaların toplam sayısı ile pozitif korelasyon göstermemiştir. Bu nedenle indeks değeri (H=2,10) sonbaharda diğer mevsimlere göre daha yüksektir, Bolluk ve Shannon - Weaver indeks değerlerinin her ikiside UPGM cluster metodu ile analiz edilmiştir. Shannon - Weaver değerleri kullanılarak yapılan analizde yaz ve kış mevsimleri çok benzer olarak bulunmakla birlikte, ilkbahar ve sonbahar mevsimleri mevsimsel bolluk ile benzerlik göstermiştir. Bu açıdan Shannon - Weaver indeksi Kesikköprü Baraj Gölünün trofik düzeyinin belirlenmesi ve izlenmesinde kullanışlı değildir. Bununla birlikte H değerleri zooplankton kommütesinin tür bolluğundaki mevsimsel homojeniteyi göstermektedir.

Kesikköprü Baraj Gölü (Türkiye) zooplankton kommunitesinin Shannon-Weaver indeksi ile analizi

Kesikköprü Dam Lake that is oligotrophic is represented by 11 Rotifera, nine Cladocera and eight Copepoda species. The data obtained from the zooplankton community in Kesikköprü Dam Lake were analysed by the Shannon - Weaver index. The index values showed no positive correlation with the total number of zooplanktonic organisms. Therefore, the index value (H= 2.10) is higher in autumn than in other seasons. The abundance data and Shannon - Weaver index values were both analysed by UPGM clustering method. Winter and summer seasons were found to be the most similar by using Shannon - Weaver index values, but spring and autumn showed similarity with seasonal abundance. In this respect, the Shannon -Weaver index is not useful for monitoring and determining the trophic status of Kesikköprü Dam Lake. However, H values express seasonal homogeneity in the species abundance of zooplankton community.

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