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http://dx.doi.org/10.7837/kosomes.2014.20.6.627

Temporal and Spatial Variability of Nutrients Variation in Bottom Layer of Jinhae Bay  

Choi, Tae-Jun (Marine Environment Research Division, National Fisheries Research & Development Institute)
Kwon, Jung-No (Marine Environment Research Division, National Fisheries Research & Development Institute)
Lim, Jae-Hyun (Marine Environment Research Division, National Fisheries Research & Development Institute)
Kim, Seul-Min (Marine Environment Research Division, National Fisheries Research & Development Institute)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.20, no.6, 2014 , pp. 627-639 More about this Journal
Abstract
In respect of the nutrients cycling in coastal environment, regeneration in bottom layer is one of major source of nutrients. We analyzed the bottom water quality at the 14 stations during 9 years from 2004 to 2012 to investigate the characteristics of nutrients at bottom layer in Jinhae Bay. Concentrations of DIN, DIP and DSi showed the large seasonal variation and were higher in summer. Especially, average concentrations of these nutrients were two times higher in hypoxic season than in normoxic season. In summer, high concentrations of DIN, DIP and DSi caused by regeneration were common feature, but spatial distribution of DSi differ from that of DIN and DIP. DIN and DIP were higher in Masan Bay, while DSi was higher in Masan Bay as well as in center of Jinhae Bay. In comparison with DIN and DIP, DSi was significantly affected by nutrients regeneration at bottom layer in whole season. According to time series analysis, DIN concentration was decreased from approximately $14{\mu}M$ to $6{\mu}M$. This result induce that Si:N ratio at bottom layer in Jinhae Bay changed from approximately 1 to 3.
Keywords
Jinhae Bay; Bottom layer; Nutrients; Dissolved oxygen; Hypoxia;
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Times Cited By KSCI : 11  (Citation Analysis)
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