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Article

Temporal and Spatial Variations of the Biochemical Composition of Phytoplankton and Potential Food Material (FM) in Jaran Bay, South Korea

1
South Sea Fisheries Research Institute, National Institute of Fisheries Science, Yeosu-si 59780, Korea
2
Marine Environment Research Division, National Institute of Fisheries Science, Busan 46083, Korea
3
Department of Oceanography, Pusan National University, Busan 46241, Korea
4
Marine Disaster Research Center, KIOST, Busan 49111, Korea
*
Author to whom correspondence should be addressed.
Water 2020, 12(11), 3093; https://doi.org/10.3390/w12113093
Received: 22 September 2020 / Revised: 29 October 2020 / Accepted: 30 October 2020 / Published: 4 November 2020
(This article belongs to the Special Issue Marine Nitrogen Fixation and Phytoplankton Ecology)
Food material (FM) derived from biochemical components (e.g., proteins, lipids, and carbohydrates) of phytoplankton can provide important quantitative and qualitative information of the food available to filter-feeding animals. The main objective of this study was to observe the seasonal and spatial variations of the biochemical compositions of phytoplankton and to identify the major controlling factors of FM as a primary food source in Jaran Bay, a large shellfish aquaculture site in South Korea. Based on monthly sampling conducted during 2016, significant monthly variations in the depth-integrated concentrations of major inorganic nutrients and chlorophyll a within the euphotic water column and a predominance (49.9 ± 18.7%) of micro-sized phytoplankton (>20 μm) were observed in Jaran Bay. Carbohydrates were the dominant biochemical component (51.8 ± 8.7%), followed by lipids (27.3 ± 3.8%) and proteins (20.9 ± 7.4%), during the study period. The biochemical compositions and average monthly FM levels (411.7 ± 93.0 mg m−3) in Jaran Bay were not consistent among different bays in the southern coastal region of South Korea, possibly due to differences in controlling factors, such as environmental and biological factors. According to the results from multiple linear regression, the variations in FM could be explained by the relatively large phytoplankton and the P* (PO43− − 1/16 × NO3) and NH4+ concentrations in Jaran Bay. The macromolecular compositions and FM, as alternatives food source materials, should be monitored in Jaran Bay due to recent changes in nutrient concentrations and phytoplankton communities. View Full-Text
Keywords: phytoplankton; biochemical compositions; carbohydrates; proteins; lipids; Jaran Bay phytoplankton; biochemical compositions; carbohydrates; proteins; lipids; Jaran Bay
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MDPI and ACS Style

Lee, J.H.; Lee, W.-C.; Kim, H.C.; Jo, N.; Kim, K.; Lee, D.; Kang, J.J.; Sim, B.-R.; Kwon, J.-I.; Lee, S.H. Temporal and Spatial Variations of the Biochemical Composition of Phytoplankton and Potential Food Material (FM) in Jaran Bay, South Korea. Water 2020, 12, 3093. https://doi.org/10.3390/w12113093

AMA Style

Lee JH, Lee W-C, Kim HC, Jo N, Kim K, Lee D, Kang JJ, Sim B-R, Kwon J-I, Lee SH. Temporal and Spatial Variations of the Biochemical Composition of Phytoplankton and Potential Food Material (FM) in Jaran Bay, South Korea. Water. 2020; 12(11):3093. https://doi.org/10.3390/w12113093

Chicago/Turabian Style

Lee, Jae H.; Lee, Won-Chan; Kim, Hyung C.; Jo, Naeun; Kim, Kwanwoo; Lee, Dabin; Kang, Jae J.; Sim, Bo-Ram; Kwon, Jae-Il; Lee, Sang H. 2020. "Temporal and Spatial Variations of the Biochemical Composition of Phytoplankton and Potential Food Material (FM) in Jaran Bay, South Korea" Water 12, no. 11: 3093. https://doi.org/10.3390/w12113093

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