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Live benthic foraminifera in the Yellow Sea and the East China Sea: vertical distribution, nitrate storage, and potential denitrification
Xu, ZM; Liu, SM; Xiang, R; Song, GD; sumeiliu@ouc.edu.cn
2017
发表期刊MARINE ECOLOGY PROGRESS SERIES
卷号571页码:65-81
摘要Benthic foraminifera were investigated to determine their vertical distribution, nitrate storage, and potential denitrification in the Yellow Sea (YS) and the East China Sea (ECS). The phytodetritus content and freshness as well as sediment redox conditions were key factors determining the vertical distribution of foraminifera in sediments of the YS and the ECS. The intracellular nitrate (ICNO3) concentrations of Nonionella stella, Hanzawaia nipponica, Bolivina robusta, Cancris auriculus, and Globobulimina pacifica ranged from 3 to 114 mM, which in some cases was several hundred-fold more than the pore water nitrate (PWNO3) concentrations. The genus Hanzawaia was for the first time reported to store ICNO3 (316 +/- 73 pmol ind.(-1); 11 +/- 3 mM). The significant correlation between the ICNO3 concentration and foraminiferal abundance (Pearson correlation: r = 0.401, p < 0.01, n = 60) suggested that foraminifera may have an important role in nitrate storage in the sediments. The foraminiferal intracellular nitrate (FINO3) pool ranged from 9 to 74% of the ICNO3 pool in sediments, indicating that nitrate may be stored by other sediment organisms (e.g. diatoms). The chlorophyll a concentration, chloroplastic pigment equivalents (CPE), and chlorophyll a:phaeopigment ratio were all significantly positively correlated with the ICNO3 concentration (Pearson correlation: r = 0.563, 0.603, and 0.457, respectively; p < 0.01; n = 60), indicating that phytodetritus (e.g. diatoms) might also contribute to sedimentary ICNO3. Potential foraminiferal denitrification rates ranged from 9 to 92 mu mol m(-2) d(-1) in the YS and the ECS, indicating that benthic foraminifera might play a role in sedimentary denitrification.
部门归属[Xu, Zhaomeng; Liu, Sumei; Song, Guodong] Ocean Univ China, Key Lab Marine Chem Theory & Technol MOE, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao 266100, Peoples R China; [Liu, Sumei; Song, Guodong] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266100, Peoples R China; [Xiang, Rong] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Song, Guodong] Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266100, Peoples R China
关键词Live Benthic Foraminifera Vertical Distribution Intracellular Nitrate Potential Denitrification Yellow Sea East China Sea
资助项目MSG
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16498
专题中科院边缘海地质重点实验室
通讯作者sumeiliu@ouc.edu.cn
推荐引用方式
GB/T 7714
Xu, ZM,Liu, SM,Xiang, R,et al. Live benthic foraminifera in the Yellow Sea and the East China Sea: vertical distribution, nitrate storage, and potential denitrification[J]. MARINE ECOLOGY PROGRESS SERIES,2017,571:65-81.
APA Xu, ZM,Liu, SM,Xiang, R,Song, GD,&sumeiliu@ouc.edu.cn.(2017).Live benthic foraminifera in the Yellow Sea and the East China Sea: vertical distribution, nitrate storage, and potential denitrification.MARINE ECOLOGY PROGRESS SERIES,571,65-81.
MLA Xu, ZM,et al."Live benthic foraminifera in the Yellow Sea and the East China Sea: vertical distribution, nitrate storage, and potential denitrification".MARINE ECOLOGY PROGRESS SERIES 571(2017):65-81.
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