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Mercury Isotopes in Deep-Sea Epibenthic Biota Suggest Limited Hg Transfer from Photosynthetic to Chemosynthetic Food Webs

文献类型：期刊论文

作者Yuan, Jingjing4; Liu, Yi4; Chen, Shun3; Peng, Xiaotong3; Li, Yu-Feng2; Li, Songjing4; Zhang, Rui4; Zheng, Wang4; Chen, Jiubin4; Sun, Ruoyu4
刊名ENVIRONMENTAL SCIENCE & TECHNOLOGY
出版日期2023-04-25
卷号57期号:16页码:6550-6562
ISSN号0013-936X
关键词marine mercury cycling oceans hydrothermal fluids cold seeps biota mercury isotopes
DOI10.1021/acs.est.3c012766550
通讯作者Sun, Ruoyu(ruoyu.sun@tju.edu.cn)
英文摘要Deep oceans receive mercury (Hg) from upper oceans, sediment diagenesis, and submarine volcanism; meanwhile, sinking particles shuttle Hg to marine sediments. Recent studies showed that Hg in the trench fauna mostly originated from monomethylmercury (MMHg) of the upper marine photo-synthetic food webs. Yet, Hg sources in the deep-sea chemo-synthetic food webs are still uncertain. Here, we report Hg concentrations and stable isotopic compositions of indigenous biota living at hydrothermal fields of the Indian Ocean Ridge and a cold seep of the South China Sea along with hydrothermal sulfide deposits. We find that Hg is highly enriched in hydrothermal sulfides, which correlated with varying Hg concentrations in inhabited biota. Both the hydrothermal and cold seep biota have small fractions (<10%) of Hg as MMHg and slightly positive Delta 199Hg values. These Delta 199Hg values are slightly higher than those in near-field sulfides but are 1 order of magnitude lower than the trench counterparts. We suggest that deep-sea chemosynthetic food webs mainly assimilate Hg from ambient seawater/sediments and hydrothermal fluids formed by percolated seawater through magmatic/mantle rocks. The MMHg transfer from photosynthetic to chemosynthetic food webs is likely limited. The contrasting Hg sources between chemosynthetic and trench food webs highlight Hg isotopes as promising tools to trace the deep-sea Hg biogeochemical cycle.
WOS关键词MASS-INDEPENDENT FRACTIONATION ; HYDROTHERMAL VENT MUSSELS ; MID-ATLANTIC RIDGE ; TROPHIC TRANSFER ; STABLE-ISOTOPES ; COLD SEEP ; SEDIMENTS ; OCEAN ; METHYLMERCURY ; BASIN
资助项目National Natural Science Foundation of China[42173011] ; National Natural Science Foundation of China[11975247] ; Major Consulting Project of Academy -local Cooperation of Chinese Academy of Engineering[2021DFZD2] ; Tianjin Natural Science Foundation[20JCQNJC01650] ; French National Funding Agency[ANR-21-CE34-0026] ; Chinese Scholar Council[202106250118]
WOS研究方向Engineering ; Environmental Sciences & Ecology
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000982603000001
资助机构National Natural Science Foundation of China ; Major Consulting Project of Academy -local Cooperation of Chinese Academy of Engineering ; Tianjin Natural Science Foundation ; French National Funding Agency ; Chinese Scholar Council
源URL[http://ir.idsse.ac.cn/handle/183446/10464]  
专题深海科学研究部_深海地质与地球化学研究室
专家咨询委员会
通讯作者Sun, Ruoyu
作者单位1.Univ Toulon & Var, Aix Marseille Univ, Mediterranean Inst Oceanog MIO UM 110, CNRS,INSU,IRD, F-13288 Marseille, France
2.Chinese Acad Sci, CAS HKU Joint Lab Met Hlth & Environm, CAS Key Lab Biomed Effects Nanomat & Nanosafety, Inst High Energy Phys,Beijing Metall Facil, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Deep Sea Sci Div, Sanya 572000, Hainan, Peoples R China
4.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式
GB/T 7714		 Yuan, Jingjing,Liu, Yi,Chen, Shun,et al. Mercury Isotopes in Deep-Sea Epibenthic Biota Suggest Limited Hg Transfer from Photosynthetic to Chemosynthetic Food Webs[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2023,57(16):6550-6562.
APA Yuan, Jingjing.,Liu, Yi.,Chen, Shun.,Peng, Xiaotong.,Li, Yu-Feng.,...&Heimburger-Boavida, Lars-Eric.(2023).Mercury Isotopes in Deep-Sea Epibenthic Biota Suggest Limited Hg Transfer from Photosynthetic to Chemosynthetic Food Webs.ENVIRONMENTAL SCIENCE & TECHNOLOGY,57(16),6550-6562.
MLA Yuan, Jingjing,et al."Mercury Isotopes in Deep-Sea Epibenthic Biota Suggest Limited Hg Transfer from Photosynthetic to Chemosynthetic Food Webs".ENVIRONMENTAL SCIENCE & TECHNOLOGY 57.16(2023):6550-6562.

入库方式： OAI收割

来源：深海科学与工程研究所

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