Changes in the phytoplankton community of a coastal,hyposaline lake in western Anatolia,Turkey |
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Authors: | Nilsun Demir |
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Institution: | (1) Faculty of Agriculture, Department of Fisheries and Aquaculture, Ankara University, 06110 Dışkapı, Ankara, Turkey |
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Abstract: | The phytoplankton composition of coastal, hyposaline (≅12 g l−1) Lake Bafa in western Turkey, was investigated after the alteration of salinity levels in past decades. Lake Bafa, formerly
a bay of the Aegean Sea, was separated from the sea as a result of alluvium deposits of the Meander River. After the construction
of a sett for flood control in 1985, freshwater inflow was reduced and salinity increased, which caused some ecological changes.
Phytoplankton samples were taken in August and November 2000, and February and May 2001, from the surface and at 5-m intervals
in the water column at three stations. The phytoplankton community contained a mixture of freshwater and marine origin species.
A total of 45 species from Bacillariophyceae, Chlorophyceae, Cyanophyceae, Chrysophyceae, and Dinophyceae were identified.
Marineoriginated species such as Chaetoceros spp. (November and May), Thalassionema nitzschioides and Prorocentrum micans (August and November), and P. minimum (May) were dominant on the basis of numerical abundance. The occurrence of salinity-tolerant species such as T. nitzschioides, P. micans, and P. minimum has not been recorded in previous studies. |
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Keywords: | Phytoplankton Lake Bafa Hyposaline Brackish lake |
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