| The Relatıon Between Water Qualıty Parameters Wıth Phytoplankton Of Terkos Lake (Istanbul)
The aim of this study is to investigate physical and chemical parameters (temperature, pH, electrical conductivity, dissolved oxygen, nutrients – nitrite, nitrate, phosphate and silicate) which effect the distrubition with determining phytoplankton composition in Terkos Dam Lake that is used source of drinking water.
Measurements and analyses were analyzed from January 2005 to February 2006. Monthly water samples were taken from surface and several depts at nine sites. The measured; water temperatures 4.4 - 26.8 oC, electrical conductivity 135 -480 µS cm-1, pH 7.79 - 9.42, dissolved oxygen 2.06 – 13.57 mg l-1, orto- phosphate 1.1 – 64.8 µg l-1, total phosphate 18 – 207 µg l-1, total nitrogen 29 – 1640 µg l-1, nitrite + nitrate 0.37 – 509 µg l-1, TN/TPO4 0.5 – 41, silicate 562 – 6822 µg l-1 and chlorophyll-a were measured between 0.42 µg l-1 - 62.04 µg l-1.
It was determined 120 phytoplankton species from seven divisios at these nine stations. Bacillariophyta (% 39) is the dominant phytoplankton with 48 species. Chlorophyta (% 35) is second group with 43 species. Cyanophyta (% 13) with 15 species, Chrysophyta (% 4) with 5 species, Cryptophyta (% 3) with 3 species, Dinophyta (% 3) with 3 species and Euglenophyta (% 3) with 3 species were represented.
As a result of this study, it was reported that there is no occured eutrofication conditions and lake’s water is shifting from mesotrophic to eutrophic.
Dostları ilə paylaş: |
