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Relationship between Physico-Chemical Factors and Chlorophyll-$a$ Concentration in Surface Water of Masan Bay: Bi-Daily Monitoring Data  

Jung, Seung-Won (South Sea Research Institute, KORDI)
Lim, Dhong-Il (South Sea Research Institute, KORDI)
Shin, Hyeon-Ho (South Sea Research Institute, KORDI)
Jeong, Do-Hyun (South Sea Research Institute, KORDI)
Roh, Youn-Ho (South Sea Research Institute, KORDI)
Publication Information
Korean Journal of Environmental Biology / v.29, no.2, 2011 , pp. 98-106 More about this Journal
Abstract
In order to investigate water quality factors controlling chlorophyll-$a$ concentrations, the by-daily monitoring was conducted from February to November 2010 in 4 stations of Masan Bay. Seasonal variability in physico-chemical factors was mainly controlled by freshwater loading as a result of precipitation: chemical oxygen demand, suspended solids and nutrient concentrations rapidly increase during the heavy rainy season, whereas they decrease in the dry season. From late winter to mid spring, phosphorus and silica sources relative to Redfield ratio were probably functioned as limiting factor for phytoplankton flourishing in surface waters, but nitrogen concentration during mid-spring to autumn might be responsible for the increase of phytoplankton biomass. The multiple regression analysis revealed that variations in chlorophyll-$a$ concentration may be strongly correlated with changes of water temperature, chemical oxygen demand, dissolved inorganic phosphorus in spring, and salinity, chemical oxygen demand and precipitation in summer. Consequently, in the Masan Bay, a heavy rainfall event is an important factor to determine changes of biotic and abiotic factors, and in addition the dynamics of chlorophyll-$a$ concentration are strongly affected by changes of hydrological factors, especially water temperature, precipitation and nutrients.
Keywords
water quality compositions; chlorophyll-a; bi-daily monitoring; Masan Bay;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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