globalchange  > 过去全球变化的重建
DOI: 10.1071/EN18186
WOS记录号: WOS:000468549800006
论文题名:
Effects of ocean acidification and short-term light/temperature stress on biogenic dimethylated sulfur compounds cycling in the Changjiang River Estuary
作者: Jian, Shan1,3; Zhang, Jing1,2; Zhang, Hong-Hai1,2; Yang, Gui-Peng1,2
通讯作者: Yang, Gui-Peng
刊名: ENVIRONMENTAL CHEMISTRY
ISSN: 1448-2517
EISSN: 1449-8979
出版年: 2019
卷: 16, 期:3, 页码:197-211
语种: 英语
英文关键词: bacteria ; phytoplankton ; solar radiation ; warming
WOS关键词: MARINE BIOGEOCHEMICAL CYCLE ; SULFIDE PRODUCTION ; DIMETHYLSULFIDE DMS ; DIMETHYLSULFONIOPROPIONATE DMSP ; PHYSIOLOGICAL-RESPONSES ; GAS DIMETHYLSULFIDE ; SOLAR-RADIATION ; ELEVATED PCO(2) ; CARBON-DIOXIDE ; CLIMATE-CHANGE
WOS学科分类: Chemistry, Analytical ; Environmental Sciences
WOS研究方向: Chemistry ; Environmental Sciences & Ecology
英文摘要:

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 (8h) 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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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/137115
Appears in Collections:过去全球变化的重建

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作者单位: 1.Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, Inst Adv Ocean Study, Qingdao 266100, Shandong, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Shandong, Peoples R China
3.Tianjin Univ Sci & Technol, Coll Marine & Environm Sci, Tianjin 300457, Peoples R China

Recommended Citation:
Jian, Shan,Zhang, Jing,Zhang, Hong-Hai,et al. Effects of ocean acidification and short-term light/temperature stress on biogenic dimethylated sulfur compounds cycling in the Changjiang River Estuary[J]. ENVIRONMENTAL CHEMISTRY,2019-01-01,16(3):197-211
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