Mercury Isotopes in Deep-Sea Epibenthic Biota Suggest Limited Hg Transfer from Photosynthetic to Chemosynthetic Food Webs
| Autor: | Jingjing Yuan, Yi Liu, Shun Chen, Xiaotong Peng, Yu-Feng Li, Songjing Li, Rui Zhang, Wang Zheng, Jiubin Chen, Ruoyu Sun, Lars-Eric Heimbürger-Boavida |
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| Přispěvatelé: | Institute of Surface-Earth System Science of Tianjin University, Tianjin University (TJU), Institute of Deep-Sea Science and Engineering [Chinese Academy of Sciences] [Sanya] (IDSSE), Chinese Academy of Sciences [Beijing] (CAS), Institute of High Energy Physics [Beijing] (IHEP), Chinese Academy of Sciences [Changchun Branch] (CAS), National University of Singapore (NUS), Yale School of Public Health (YSPH), Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), ANR-21-CE34-0026,HOT_Hg,mercure hydrothermale - l'histoire naturel d'un contaminant(2021) |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Environmental Science and Technology Environmental Science and Technology, In press, ⟨10.1021/acs.est.3c01276⟩ |
| ISSN: | 0013-936X 1520-5851 |
| Popis: | International audience; 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 photosynthetic food webs. Yet, Hg sources in the deep-sea chemosynthetic 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 ( |
| Databáze: | OpenAIRE |
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