Phytoplankton functional groups provide a quality assessment method by the Q assemblage index in Lake Mogan (Turkey)

Authors : Ayşe Nilsun DEMİR, Özden FAKIOĞLU, Berrin DURAL

Pages : 169-179

Doi:10.3906/bot-1301-60

View : 25 | Download : 12

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The aim of this research is to test the Q phytoplankton assemblage index based on phytoplankton functional groups in Lake Mogan and to provide a quality state estimation by data from 2006. Phytoplankton was sampled at 2 stations of the lake, paralleled with physical insert ignore into journalissuearticles values(water temperature, Secchi depth, pH, conductivity); and chemical insert ignore into journalissuearticles values(DO, chlorophyll-a, alkalinity, total hardness, soluble reactive phosphorus, total phosphorus, NO2-N, NO3-N, NH3-N); analyses. The Q index was able to follow the main seasonal changes of the physical and chemical parameters and indicated a moderate ecological status for Lake Mogan. Phytoplankton biomass varied between 0.75 and 10.12 mg/L in the research period, and provided a similar ecological state by Q index, chlorophyll-a, total phosphorus, and Secchi depth. A total of 76 phytoplankton species were identified in the study period, belonging to 12 functional groups. The seasonal succession of dominant functional groups followed this sequence of coda: X2 insert ignore into journalissuearticles values(Chlamydomonas);, Lo insert ignore into journalissuearticles values(Merismopedia, Peridinium, Chroococcus);, F insert ignore into journalissuearticles values(Botryococcus, Sphaerocystis, Oocystis, Planktosphaeria);, S1 insert ignore into journalissuearticles values(Phormidium, Planktothrix);, M insert ignore into journalissuearticles values(Microcystis);, and F insert ignore into journalissuearticles values(Botryococcus, Oocystis);.
Keywords : Key words Lake Mogan, assemblage index, ecological status, quality assessment