A changing nitrogen source for phytoplankton in the central Yellow Sea revealed by Compound-Specific Isotope Analysis of amino acids

Hyuntae Choi1, Bohyung Choi1, Yoshito Chikaraishi2, Yoshinori Takano3, Haryun Kim4, Kitack Lee5, Dhong-Il Lim6 and Kyung-Hoon Shin1, (1)Hanyang University, Department of marine science and convergence technology, Ansan, South Korea, (2)Hokkaido University, Institute of Low Temperature Science, Sapporo, Japan, (3)JAMSTEC, Yokosuka, Japan, (4)Department of Ecology and Conservation, National Marine Biodiversity Institute of Korea, Seochon, South Korea, (5)Pohang Univ Sci Tech, Pohang, South Korea, (6)Korea Institute of Ocean Science and Technology, South Sea Research Institute, Jangmok, South Korea