MELEK ZEYBEK, Hasan KALYONCU, Ömer Osman ERTAN

Eğirdir ve Kovada göllerini bağlayan Kovada kanalı ile göllerin kanala yakın bölümünde trofik durumun belirlenmesi

Temmuz 2010-Haziran 2011 tarihleri arasında gerçekleştirilen bu çalışmada Eğirdir Gölü’nden (kanalın göle bağlandığı bölge civarı) 3, Kovada Kanalı’ndan 3, Kovada Gölü’nden (kanalın göle döküldüğü bölge civarı) 3 tane olmak üzere toplam 9 istasyon seçilmiştir. Bu istasyonlardan aylık peryotlarla su örnekleri alınarak klorofil a ve toplam fosfor (TP) analizleri yapılmış, ayrıca seki diski derinliği ölçülmüştür. Çalışma alanının trofik statüsünün belirlenmesi için Carlson Trofik Durum İndeksi kullanılmıştır. Elde edilen verilere göre, Eğirdir Gölü’nün çalışılan bölgesi klorofil a açısından oligotrof, toplam fosfor ve seki diski derinliğine göre mezotrof; Kovada Kanalı TP miktarına göre hiperötrof, klorofil a miktarına göre mezotrof karakterdedir. Bununla birlikte, Kovada Gölü’ndeki üç istasyondan toplanan verilere göre, TP miktarı ve seki diski derinliğine göre ötrof, klorofil a miktarına göre mezotrof bir yapı sergilemiştir.

The determination of trophic status in Kovada channel that connects lake Eğirdir and lake Kovada, and in the region of the lakes adjacent to the channel

In this study, which was carried out between July 2010- June 2011, totally 9 stations were chosen from research area; three of them were from Lake Eğirdir (around the area where the channel is connected to the lake); three stations were from Kovada Channel and the last three stations were from Lake Kovada (around the area where the channel is poured into the lake). Water samples (for the analysis of chlorophyll a and total phosphorus) were taken monthly and also secchi disc depth was measured from these stations. Carlson’s Trophic State Index was used for the determination of the trophic status of the study area. According to obtained data, the studied area of Lake Eğirdir has oligotrophic character according to chlorophyll a, mesotrophic as for total phosphorus and secchi disc depth; Kovada Channel has hypertrophic character with regard to TP and mesotrophic character as for chlorophyll a. However, according to data gathered from the three stations of Lake Kovada, it has eutrophic character in terms of TP and SDD, and mesotrophic character according to chlorophyll a.

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