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하구언 담수방류와 영산강 하구 식물플랑크톤 생체량 및 환경인자의 장기변동
윤보배 ( Bo Bae Yoon ),이어진 ( Eo Jin Lee ),강태안 ( Tae Ahn Kang ),신용식 ( Yong Sik Shin ) 한국하천호수학회 2013 생태와 환경 Vol.46 No.2
In Yeongsan River estuary, located in the southern West Coast, a dike was constructed in December 1981. After the construction of a dike, discharge mechanism of fresh water has been changed, the water quality and chlorophyll-a are expected to be influenced by fresh water discharge. We investigated temporal and spatial variations and long-term trend of phytoplankton biomass (chlorophyll-a) and environmental factors. The concentrations of nutrient and chlorophyll-a were generally high in summer and the concentrations were increased toward downstream. Surface/bottom salinity difference was negatively correlated with salinity in surface water but positively with nutrient and chlorophyll-a. TN, TP and DIN concentrations were generally increased over 10 years. This study can provide information for better management of water quality for Youngsan River estuary.