Density and Biomass of Fish Populations in Kirmir Stream of Sakarya River, Turkey
2016
A Şeref Korkmaz | Özge Zencir Tanır
In this study, Zippin’s triple-catch removal method was used to estimate density and biomass of fish species in Kirmir Stream of Sakarya River, Central Anatolia Turkey. A total area of 1.5256 ha was sampled and 4167 fishes were caught using electrofishing between February 2007 and November 2007. A total of 9 fish species representing 2 families Cyprinidae and Cobitidae were recorded. Fish species identified are as follows: Chub Leuciscus cephalus Linnaeus, 1758 , barbel Barbus plebelejus escherichi Heckel, 1843 , Capoeta tinca Heckel, 1843, spirlin Alburnoides bipunctatus Bloch, 1782 , Capoeta capoeta sieboldi Steindachner, 1864, tirgis-nase Chondrostoma regium Heckel, 1843 , bleak Alburnus orontis Sauvage, 1882 , spined-loach Cobitis taenia Linnaeus, 1758 and angora-loach Noemacheilus angorae Steindachner, 1897 . A. orontis was the most dominant species, constituting 1199 fish and 28.77% of the total fishes, followed by C. tinca 1173 fish and 28.15% , B. p. escherichi 584 fish and 14.01% , L. cephalus 454 fish and 10.90% , A. bipunctatus 322 fish and 7.73% , C. regium 245 fish and 5.88 % , N. angorae 107 fish and 2.57% C. c. sieboldi 65 fish and 1.56% and C. taenia 18 fish and 0.43% . The density and biomass values were estimated as 11456 fish ha-1 and 346.78 kg ha-1 in February 2007, 8982 fish ha-1 and279.82 kg ha-1 in May 2007, 6320 fish ha-1 and 251.52 kg ha-1 in August 2007 and 2887 fish ha-1 and 168.87 kg ha-1 in November 2007, respectively. The lowest density and biomass values were observed in November 2007
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