Driving factors affecting the phytoplankton functional groups in a deep alkaline lake

Authors : Ayca OGUZ, Reyhan AKCAALAN, Latife KOKER, Cenk GUREVİN, Zeynep DORAK, Meric ALBAY

Pages : 633-646

View : 14 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This study evaluated the phytoplankton communities based on functional groups to obtain information about the water quality of Lake İznik, Turkey. The phytoplankton consisted of 103 taxa, classified in 12 phytoplankton functional groups insert ignore into journalissuearticles values(PFGs);, with dominancy of 5 species, Chrysosporum ovalisporum, Dolichospermum mendotae, Planktothrix rubescens, Fragilaria capucina, and Mougeotia sp. The Shannon–Wiener diversity index insert ignore into journalissuearticles values(H’); was calculated and results ranged between 0.41 and 2.47. The redundancy analysis insert ignore into journalissuearticles values(RDA); and Spearman’s correlation analysis were used to assess the relationships between the PFGs and environmental variables. According to the multiple comparisons of the data, the main efficient factors that determined the seasonal distribution of the PFGs were TP, DO, SiO2, SD, and pH. The ecological requirements of the dominant PFGs insert ignore into journalissuearticles values(C, D, F, J, H1, Lo, SN, N, P, R, T, and X2); indicated mainly meso-eutrophic waters. Similarly, Carlson’s trophic state index insert ignore into journalissuearticles values(TSI); stated mesotrophy conditions. As a result, the approach of PFGs can be successfully applied in a deep, alkaline lake to understand the water quality and trophic status.
Keywords : Phytoplankton functional groups, Lake İznik, Turkey, trophic status