Hydrothermal plumes as hotspots for deep-ocean heterotrophic microbial biomass production
| Autor: | Cathalot, Cécile, Roussel, Erwan G., Perhirin, Antoine, Creff, Vanessa, Donval, Jean-Pierre, Guyader, Vivien, Roullet, Guillaume, Gula, Jonathan, Tamburini, Christian, Garel, Marc, Godfroy, Anne, Sarradin, Pierre-Marie |
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| Přispěvatelé: | Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Laboratoire d'Océanographie Physique et Spatiale (LOPS), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), 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-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere Chemoautotrophic Growth Microbiota Oceans and Seas Science [SDE.MCG]Environmental Sciences/Global Changes Heterotrophic Processes Carbon cycle Models Theoretical Article Hydrothermal Vents Marine chemistry Prokaryotic Cells Seawater Biomass [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
| Zdroj: | Nature Communications Nature Communications, 2021, 12 (1), ⟨10.1038/s41467-021-26877-6⟩ Nature Communications, Nature Publishing Group, 2021, 12 (1), ⟨10.1038/s41467-021-26877-6⟩ Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021) |
| ISSN: | 2041-1723 |
| DOI: | 10.1038/s41467-021-26877-6⟩ |
| Popis: | Carbon budgets of hydrothermal plumes result from the balance between carbon sinks through plume chemoautotrophic processes and carbon release via microbial respiration. However, the lack of comprehensive analysis of the metabolic processes and biomass production rates hinders an accurate estimate of their contribution to the deep ocean carbon cycle. Here, we use a biogeochemical model to estimate the autotrophic and heterotrophic production rates of microbial communities in hydrothermal plumes and validate it with in situ data. We show how substrate limitation might prevent net chemolithoautotrophic production in hydrothermal plumes. Elevated prokaryotic heterotrophic production rates (up to 0.9 gCm−2y−1) compared to the surrounding seawater could lead to 0.05 GtCy−1 of C-biomass produced through chemoorganotrophy within hydrothermal plumes, similar to the Particulate Organic Carbon (POC) export fluxes reported in the deep ocean. We conclude that hydrothermal plumes must be accounted for as significant deep sources of POC in ocean carbon budgets. Hydrothermal vents are biogeochemically important, but their contribution to the carbon cycle is poorly constrained. Here the authors build a biogeochemical model that estimates autotrophic and heterotrophic production rates of microbial communities within hydrothermal plumes along mid-ocean ridges. |
| Databáze: | OpenAIRE |
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