Program     The role of trace metals in controlling structure and function of microbial communities in contemporary oceans       Poster Recent progress of GEOTRACES activities in the Xiamen University, China P-C3-01 Yihua Cai* , State Key Laboratory of Marine Environmental Science, Xiamen University Kuanbo Zhou, State Key Laboratory of Marine Environmental Science, Xiamen University Liping Ye, State Key Laboratory of Marine Environmental Science, Xiamen University Yongming Huang, State Key Laboratory of Marine Environmental Science, Xiamen University Zhimian Cao, State Key Laboratory of Marine Environmental Science, Xiamen University Gregory A. Cutter, Department of Ocean, Earth, and Atmospheric Sciences, Old Dominion University Haili Wang, State Key Laboratory of Marine Environmental Science, Xiamen University Minhan Dai, State Key Laboratory of Marine Environmental Science, Xiamen University Presenter Email: yihua_cai@xmu.edu.cn Trace elements and their isotopes (TEIs) play an important role in regulating the marine ecosystem, global carbon cycle and climate change, and to serve as useful proxies of various oceanographic processes. An ongoing international program on the study of marine biogeochemical cycles of trace elements and their isotopes (GEOTRACES) is implemented to accelerate the scientific research of marine biogeochemistry of TEIs and to generate abundant datasets of TEIs distribution at a global scale for a precise and comprehensive understanding of TEIs behaviors in the ocean. However, the ocean sections in the Western Pacific Ocean and Chinese marginal seas planned by GEOTRACES still remain largely unexploited until now. To be capable of conducting the Western Pacific Ocean GEOTRACES cruises and to contribute to the GEOTRACES program, the scientific team in State Key Laboratory of marine environmental science of Xiamen University works closely with international TEIs geochemists to build the GEOTRACES sampling facility, carry out test cruises, and perform laboratory intercarlibration. We will give an overview on the recent progress of these activities in this talk and also introduce the future plan on the Chinese GEOTRACES cruise.

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