Seasonality of dimethylated sulfur compounds cycling in north China marginal seas

Shi-Hai Mao; Guang-Chao Zhuang; Xin-Wei Liu; Na Jin; Hong-Hai Zhang; Andrew Montgomery; Xi-Ting Liu; Gui-Peng Yang

doi:10.1016/j.marpolbul.2021.112635

Seasonality of dimethylated sulfur compounds cycling in north China marginal seas

Mar Pollut Bull. 2021 Sep:170:112635. doi: 10.1016/j.marpolbul.2021.112635. Epub 2021 Jul 1.

Authors

Shi-Hai Mao¹, Guang-Chao Zhuang², Xin-Wei Liu³, Na Jin³, Hong-Hai Zhang⁴, Andrew Montgomery⁵, Xi-Ting Liu⁶, Gui-Peng Yang⁷

Affiliations

¹ Frontiers Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China.
² Frontiers Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China. Electronic address: zgc@ouc.edu.cn.
³ College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
⁴ Frontiers Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China. Electronic address: honghaizhang@ouc.edu.cn.
⁵ Department of Marine Sciences, University of Georgia, Athens, GA 30602, USA.
⁶ Key Laboratory of Submarine Geosciences and Prospecting Technology, College of Marine Geosciences, Ocean University of China, Qingdao 266100, China.
⁷ Frontiers Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.

PMID: 34218036
DOI: 10.1016/j.marpolbul.2021.112635

Abstract

Dimethylated sulfur compounds play an important role in global sulfur cycle. We investigated the seasonality of dimethylsulfoniopropionate (DMSP), dimethylsulfoxide (DMSO), dimethylsulfide (DMS) and associated processes in two north China marginal seas during 2014 and 2016. High concentrations of DMS, DMSP and DMSO occurred in summer/spring, while the lowest were observed in winter. This clear seasonality was primarily driven by biomass abundance and phytoplankton communities, reflected in chlorophyll a concentrations and the composition/ratios of diatoms and dinoflagellates. The spring maximum was attributed to the annual occurrence of algal bloom. The sea-to-air fluxes of DMS also varied largely between seasons, with an average of 8.84, 11.87, 10.50 and 2.14 μmol m^-2 day^-1 in spring, summer, autumn and winter, respectively. Given the seasonal uncertainty of sea-to-air flux, the seasonality or situations where specific blooms occur regularly should be considered for accurate estimation of annual global DMS emission.

Keywords: Bohai Sea; DMS; DMSO; DMSP; Sea-to-air flux; Seasonal variation; Yellow Sea.

MeSH terms

China
Chlorophyll A
Oceans and Seas
Phytoplankton
Seasons
Seawater*
Sulfur Compounds*

Substances

Sulfur Compounds
Chlorophyll A