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Spatial and temporal characterization of the physicochemical parameters and phytoplankton assemblages in Dodurga Reservoir (Sinop, Turkey)
(2015) Hasirci, Seda Mustak; Tezel, Elif Ersanl
Physicochemical parameters and phytoplankton seasonal variation were investigated between August 2010 and July 2011 in Dodurga Reservoir. A total of 35 phytoplankton taxa were identifed. Phytoplankton samples collected from surface samples in late winter, spring, and early and mid-summer were found to be infuenced by nitrate, dissolved oxygen, pH, temperature, and phosphate. However, early winter and autumn assemblages of the samples were infuenced by total hardness, silica, water transparency, conductivity, organic matter, and oxidation reduction potential. Te phytoplankton samples collected from diferent depths in early and mid-summer were found to be infuenced by only temperature. Early and middle spring assemblages of the samples were afected by pH, dissolved oxygen, and conductivity, while winter samples fuctuated according to conductivity and oxidation reduction potential. Te phytoplankton abundance increased in the spring and early summer. High phytoplankton abundance was recorded in the transition zone as a result of decreasing fow velocity and light penetration. Te maximum number of total organisms in depth samples was observed at the depth of 24 m, refecting availability of light and temperature.