Seawater carbonate chemistry and biogenic dimethylated sulfur compounds cycling

Ocean acidification (OA) affects marine primary productivity and community structure. Therefore, OA may influence the biogeochemical cycles of volatile biogenic dimethyl sulfide (DMS), and its precursor dimethylsulfoniopropionate (DMSP) and photochemical oxidation product dimethyl sulfoxide (DMSO). A 23-day shipboard incubation experiment investigated the short-term response of the production and cycling of biogenic sulfur compounds to OA in the Changjiang River Estuary to understand the effects of OA on biogenic sulfur compounds. Phytoplankton abundance and community composition showed a marked difference at three different pH levels at the late stage of the experiment. Significant reductions in chlorophyll a (Chl-a), DMS, particulate DMSP (DMSPp) and dissolved DMSO (DMSOd) concentrations were identified under high CO2 levels. Moreover, minimal changes were observed in the productions of dissolved DMSP (DMSPd) and particulate DMSO (DMSOp) among the treatments. The ratios of DMS, total DMSP (DMSPt) and total DMSO (DMSOt) to Chl-a were not affected by a change in pH. Furthermore, the concentrations of DMS and DMSOd were closely related to the mean bacterial abundance at the three pH levels. Additional short-term (8 h) incubation experiments on the light and temperature effects showed that the influence of pH on the production of dimethylated sulfur compounds also depended on solar radiation and temperature. Under natural and UVB light, DMS photodegradation rates increased by 1.6 to 4.2 times at low pH levels. Thus, OA may lead to decreasing DMS concentrations in surface seawater. Light and temperature conditions also play important roles in the production and cycling of biogenic sulfur compounds.

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Cite this as

Jian, Shan, Zhang, Jing, Zhang, Hong-Hai, Yang, Gui-Peng (2019). Dataset: Seawater carbonate chemistry and biogenic dimethylated sulfur compounds cycling. https://doi.org/10.1594/PANGAEA.924086

DOI retrieved: 2019

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-4.0
Source https://doi.org/10.1594/PANGAEA.924086
Author Jian, Shan
Given Name Shan
Family Name Jian
More Authors
Zhang, Jing
Zhang, Hong-Hai
Yang, Gui-Peng
Source Creation 2019
Publication Year 2019
Resource Type text/tab-separated-values - filename: Jian-etal_2019_EC
Subject Areas
Name: BiologicalClassification

Name: Chemistry

Name: Ecology

Related Identifiers
Title: Effects of ocean acidification and short-term light/temperature stress on biogenic dimethylated sulfur compounds cycling in the Changjiang River Estuary
Identifier: https://doi.org/10.1071/EN18186
Type: DOI
Relation: References
Year: 2019
Source: Environmental Chemistry
Authors: Jian Shan , Zhang Jing , Zhang Hong-Hai , Yang Gui-Peng , Gattuso Jean-Pierre , Epitalon Jean-Marie , Lavigne Héloïse , Orr James C , Gentili Bernard , Hagens Mathilde , Hofmann Andreas , Mueller Jens-Daniel , Proye Aurélien , Rae James , Soetaert Karline .

Title: seacarb: seawater carbonate chemistry with R. R package version 3.2.12
Identifier: https://CRAN.R-project.org/package=seacarb
Type: DOI
Relation: References
Year: 2019
Authors: Jian Shan , Zhang Jing , Zhang Hong-Hai , Yang Gui-Peng , Gattuso Jean-Pierre , Epitalon Jean-Marie , Lavigne Héloïse , Orr James C , Gentili Bernard , Hagens Mathilde , Hofmann Andreas , Mueller Jens-Daniel , Proye Aurélien , Rae James , Soetaert Karline .