Evaluation of water quality variables and their effects on fish life in Asarsuyu stream (Düzce/Turkey)
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Tarih
2019
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info:eu-repo/semantics/openAccess
Özet
Asarsuyu Stream is one of the tributaries of Melen River located in the Western Black Sea Region in Turkey. It has been exposed to intensive industrial activities as well as agricultural and urban discharges. Ichthyofauna of the stream consists of Squalius pursakensis, Barbus tauricus, Alburnoides tzanevi, Rhodeus amarus, Alburnus derjugini, Gobio baliki, Cobitis splendens, Oxynoemacheilus banarescui, Gambusia holbrooki. In order to associate water quality of Asarsuyu Stream with fish life, we monitored some physical and chemical parameters (i.e. temperature, conductivity, salinity, total dissolved solids, pH, dissolved oxygen, nitrite, nitrate, ammonium, phosphate, sulphate, calcium, magnesium, chloride, sodium and potassium) seasonally during February and November 2018. All of the obtained data were compared according to the criteria of SKKY (Water Pollution Control Regulation in Turkey) and evaluated according to the criteria of European Commission on the quality of fresh waters needing protection or improvement in order to support fish life. Our results suggest that dissolved oxygen may play a critical role in fish survival especially during spring and autumn in the study area. According to the classification criteria for nitrogenous compounds, our monitoring stations ranged from I to IV. Especially nitrite and ammonia have been determined to reach critical levels for fish health. Obtained results can be considered as an indicator of organic pollution in the stream. Therefore, the pollutant sources for stream should be controlled in order to conserve the fish populations in Asarsuyu Stream.
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Eurasian Journal of Forest Science
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Cilt
7
Sayı
2
