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Phytoplankton and Environmental Factors in Lake Hwaong  

Chung, Mi-Hee (Department of Environmental Science, Konkuk University)
Kim, Ho-Sub (Department of Environmental Science, Konkuk University)
Choi, Chung-Il (Department of Earth and Marine Sciences, Hanyang University)
Hwang, Soon-Jin (Department of Environmental Science, Konkuk University)
Publication Information
Korean Journal of Ecology and Environment / v.37, no.2, 2004 , pp. 193-204 More about this Journal
Abstract
This study was conducted to evaluate both temporal and spatial dynamics of phytoplankton community and environmental parameters in a newly made reclaimed esturine lake (L. Hwaong). Monthly sampling was conducted at 4 sites covering the longest transect of longitudinal gradient of the lake from June to November, 2002. Total 5 classes 8 orders 26 families 83 genus 192 species were identified at all study sites during the study period. Phytoplankton total cell density ranged 24${\sim}$ 1,882 cells $mL^{-1}$ and highly varied both temporally and spatially. Total cell density was significantly related with salinity, pH, BOD, COD, SS, TN and TP concentration. Diatom density also was significantly correlated with salinity, SS, BOD, COD and TN concentration, Although there was spatial difference, a longtudinal gradient appeared in phytoplankton cell density, Chl-a, TN and TP concentration from the mouth of river in June and August. In conclusion, phytoplakton community structure was dominated by diatoms (Bacillariophyceae), and appeared to be largely influenced by salinity, precipitation, and nutrients during the summer and the fall.
Keywords
Lake Hwaong; phytoplanton; community dynamics; diatom; salinity; precipitation; nutrients;
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