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http://dx.doi.org/10.11614/KSL.2017.50.1.148

Relationship between Phytoplankton Community and Water Quality in Lakes in Jeonnam using SOM  

Cho, Hyeon Jin (Department of Biological Sciences and Biotechnology, Chonnam National University)
Na, Jeong Eun (Yeongsan River Environmental Research Center)
Jung, Myoung Hwa (Department of Biological Sciences, Chonnam National University)
Lee, Hak Young (Department of Biological Sciences, Chonnam National University)
Publication Information
Korean Journal of Ecology and Environment / v.50, no.1, 2017 , pp. 148-156 More about this Journal
Abstract
In this study, we analyzed the relationship between phytoplankton community and physicochemical factors in 12 lakes located in Jeollanam-do based on the data surveyed from March to November 2014. Totally, 297 species of phytoplankton were identified including 98 Bacillariophyceae, 148 Chlorophyceae, 23 Cyanophyceae and 28 other phytoplankton taxa. The standing crops ranged from 124 to $59,148cells\;mL^{-1}$ and showed the highest in August with the increase of Cyanophycean cells. The self-organizing map (SOM) was optimized into $9{\times}6$ grid and was classified into 5 clusters based on the similarity of environmental factors and phytoplankton indices. The SOM results showed that phytoplankton communities had positive relationship with water temperature, SS, DO, BOD, TP and Chl-a, whereas low relationship with pH, TN, $NH_3-N$, $NO_3-N$, $PO_4-P$ and Conductivity. In Pearson's correlation coefficient, relationship between environmental factors and phytoplankton communities showed similar results with SOM.
Keywords
phytoplankton; lakes; self-organizing map (SOM); Pearson's correlation coefficient;
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