CAS Key Laboratory of Marine Ecology and Environmental Sciences;
Institute of Oceanology;
Chinese Academy of Sciences;
Qingdao 266071;
China;
Laboratory for Marine Ecology and Environmental Science;
Qingdao National Laboratory for Marine Science and Technology;
Qingdao 266237;
China;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
Center for Ocean Mega-Science;
Chinese Academy of Sciences;
Qingdao 266071;
China;
tintinnid; abundance distribution; polar front; Amundsen Sea; Antarctica;