Variability of water quality and limiting factor for primary production in semi-enclosed Masan Bay, South Sea of Korea SCOPUS KCI

Title
Variability of water quality and limiting factor for primary production in semi-enclosed Masan Bay, South Sea of Korea
Author(s)
Lim, D.-I.; Kim, Y.-O.; Kang, M.R.; Jang, P.-K.; Shin, K.; Jang, M.
KIOST Author(s)
Lim, Dhongil(임동일)Kim, Young Ok(김영옥)Jang, Pung Guk(장풍국)Shin, Kyoungsoon(신경순)
Publication Year
2007-12
Abstract
Seasonal variations of various physicochemical components (temperature, salinity, pH, DO, COD, DOC, nutrients-silicate, DIN, DIP) and potential limiting factor for phytoplankton primary production were studied in the surface water of semi-enclosed Masan Bay. Seasonal variations of nutrient concentrations, with lower values in summer and winter, and higher in fall, are probably controlled by freshwater loadings to the bay, benthic flux and magnitude of occurrence of phytoplankton communities. Their spatial distributional patterns are primarily dependent on physical mixing process between freshwater and coastal seawater, which result in a decreasing spatial gradient from inner to outer part of the bay. In the fall season of strong wave action, the major part of nutrient inputs (silicate, ammonium, dissolved inorganic phosphorus) comes from regeneration (benthic flux) at sediment-water interface. During the summer period, high Si:DIN and Si:DIP and low DIN:DIP relative to Redfield ratios suggest a N- and secondarily P-deficiency. During other seasons, however, silicate is the potential limiting factor for primary production, although the Si-deficiency is less pronounced in the outer region of the bay. Indeed, phytoplankton communities in Masan Bay are largely affected by the seasonal variability of limiting nutrients. On the other hand, the severe depletion of DIN (relatively higher silicate level) during summer with high freshwater discharge probably can be explained by N-uptake of temporary nanoflagellate blooms, which responds rapidly to pulsed nutrient loading events. In Masan Bay, this rapid nutrient consumption is considerably important as it can modify the phytoplankton community structures.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/6504
DOI
10.4217/OPR.2007.29.4.349
Bibliographic Citation
Ocean and Polar Research, v.29, no.4, pp.349 - 366, 2007
Publisher
Korea Ocean Research and Development Institute
Keywords
Benthic flux; Masan Bay; Potential limiting nutrients; Seasonal-spatial variability; Water quality
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Marine ecology,Plankton,Protists,해양생태,부유생물,원생생물

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