Acrylic acid and related dimethylated sulfur compounds in the Bohai and Yellow seas during summer and winter

X. Wu; X. Wu; X. Wu; P.-F. Li; H.-H. Zhang; H.-H. Zhang; H.-H. Zhang; M.-X. Zhu; M.-X. Zhu; M.-X. Zhu; C.-Y. Liu; C.-Y. Liu; C.-Y. Liu; G.-P. Yang; G.-P. Yang; G.-P. Yang

doi:10.5194/bg-17-1991-2020

Biogeosciences (Apr 2020)

Acrylic acid and related dimethylated sulfur compounds in the Bohai and Yellow seas during summer and winter

X. Wu,
X. Wu,
X. Wu,
P.-F. Li,
H.-H. Zhang,
H.-H. Zhang,
H.-H. Zhang,
M.-X. Zhu,
M.-X. Zhu,
M.-X. Zhu,
C.-Y. Liu,
C.-Y. Liu,
C.-Y. Liu,
G.-P. Yang,
G.-P. Yang,
G.-P. Yang

Affiliations

X. Wu: Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
X. Wu: Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
X. Wu: College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China
P.-F. Li: College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China
H.-H. Zhang: Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
H.-H. Zhang: Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
H.-H. Zhang: College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China
M.-X. Zhu: Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
M.-X. Zhu: Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
M.-X. Zhu: College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China
C.-Y. Liu: Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
C.-Y. Liu: Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
C.-Y. Liu: College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China
G.-P. Yang: Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
G.-P. Yang: Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
G.-P. Yang: College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China

DOI: https://doi.org/10.5194/bg-17-1991-2020
Journal volume & issue: Vol. 17
pp. 1991 – 2008

Abstract

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Spatiotemporal distributions of dissolved acrylic acid (AAd) and related biogenic sulfur compounds including dimethylsulfide (DMS) and dissolved and total dimethylsulfoniopropionate (DMSPd and DMSPt) were investigated in the Bohai Sea (BS) and Yellow Sea (YS) during summer and winter. AAd and DMS production from DMSPd degradation and AAd degradation were analyzed. Significant seasonal variations in AAd and DMS(P) were observed. AAd exhibited similar distributions during summer and winter; i.e., relatively high values of AAd occurred in the BS and the northern YS, and the concentrations decreased from inshore to offshore areas in the southern YS. Due to strong biological production from DMSP and abundant terrestrial inputs from rivers in summer, the AAd concentrations in the surface seawater during summer (30.01 nmol L−1) were significantly higher than those during winter (14.98 nmol L−1). The average concentration sequence along the transects during summer (AAd > DMSPt > DMS > DMSPd) showed that particulate DMSP (DMSPp) acted as a DMS producer and that terrestrial sources of AAd were present; in contrast, the sequence in winter was AAd > DMSPt > DMSPd > DMS. High values of AAd and DMS(P) were mostly observed in the upper layers, with occasional high values at the bottom. High AAd concentrations in the porewater, which could be transported to the bottom water, might result from the cleavage of intracellular DMSP and reduce bacterial metabolism in sediments. In addition, the production and degradation rates of biogenic sulfur compounds were significantly higher in summer than in winter, and the removal of AAd was primarily attributed to microbial consumption. Other sources of AAd existed aside from the production from DMSPd.

Published in Biogeosciences

ISSN: 1726-4170 (Print); 1726-4189 (Online)
Publisher: Copernicus Publications
Country of publisher: Germany
LCC subjects: Science: Biology (General): Ecology; Science: Biology (General): Life; Science: Geology
Website: http://www.biogeosciences.net

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