Abstract
Comment
-
Oral or Poster
-
IAPSO
-
P02 - Physics and Biogeochemestry of Semi-Enclosed, Shelf Seas and Coastal Zones
-
Impact of Temperature and Stratification, Modulated by Warming Tsushima Warm Current, on the Spatiotemporal Distribution of Picoplankton in the Northern East China Sea
-
1. Yoonja , Kang*, Department of Ocean Integrated Science,Chonnam National University,Yeosu,Republic of Korea
2. Chan-Woo , Kwon, Department of Ocean Integrated Science,Chonnam National University,Yeosu,Republic of Korea
3. Eunbi , Lee, Department of Ocean Integrated Science,Chonnam National University,Yeosu,Republic of Korea
4. Yeongji , Oh, Department of Ocean Integrated Science,Chonnam National University,Yeosu,Republic of Korea
5. Yang-Ki , Cho, School of Earth and Environmental Sciences/Research Institute of Oceanography,Seoul National University,Seoul,Republic of Korea
6. Chung Il , Lee, Department of Marine Bioscience,Gangneung-Wonju National University,Gangneung,Republic of Korea
7. Hyeong Kyu , Kwon, School of Earth and Environmental Sciences/Research Institute of Oceanography,Seoul National University,Seoul,Republic of Korea
8. Guebuem , Kim, School of Earth and Environmental Sciences/Research Institute of Oceanography,Seoul National University,Seoul,Republic of Korea
9. Minji , Lee, South Sea Fisheries Research Institute,National Institute of Fisheries Science,Yeosu,Republic of Korea
10. Chang-Keun , Kang, School of Earth Sciences and Environmental Engineering,Gwangju Institute of Science and Technology,Gwangju,Republic of Korea
*Presenting Author
-
The northern East China Sea is one of the Large Marine Ecosystems, where experiences the fastest ocean warming across the globe. With the anticipation of stimulated Tsushima Warm Current (TWC) transport and rapid ocean warming, the importance of picoplankton will increase in this ecosystem. Thus, the spatiotemporal distribution of picoplankton was investigated in the northern East China Sea, where variability of TWC can modulate temperature and stratification. High contributions of warm and less saline Tsushima Surface Warm Water (TSWW) increased water temperature and stratification. Picoplankton were responsible for 75% of the relative contribution of chl a. PicoC:PicoChla ratios increased with distance from the coasts and fluctuated with depth, indicating that an elevated contribution of Tsushima Warm Water diminished the photosynthetic activity of picoplankton. Synechococcus I population decreased with salinity. High contribution of TSWW increased Prochlorococcus and Synechococcus II population, related with stratification and rising temperature driven by TSWW, respectively. Picoplankton-derived carbon contents were mostly attributed either to picoeukaryotes or to Synechococcus depending on the TSWW contribution. This suggests that the rising TSWW contribution can intensify the role of Synechococcus in picoplankton-derived organic matter in the northern East China Sea.