A source of isotopically light organic carbon in a low-pH anoxic marine zone

Cristian A. Vargas; Sebastian I. Cantarero; Julio Sepúlveda; Alexander Galán; Ricardo De Pol-Holz; Brett Walker; Wolfgang Schneider; Laura Farías; Marcela Cornejo D’Ottone; Jennifer Walker; Xiaomei Xu; Joe Salisbury

doi:10.1038/s41467-021-21871-4

Nature Communications (Mar 2021)

A source of isotopically light organic carbon in a low-pH anoxic marine zone

Cristian A. Vargas,
Sebastian I. Cantarero,
Julio Sepúlveda,
Alexander Galán,
Ricardo De Pol-Holz,
Brett Walker,
Wolfgang Schneider,
Laura Farías,
Marcela Cornejo D’Ottone,
Jennifer Walker,
Xiaomei Xu,
Joe Salisbury

Affiliations

Cristian A. Vargas: Department of Aquatic System, Faculty of Environmental Sciences & Environmental Sciences Center EULA Chile, Universidad de Concepción
Sebastian I. Cantarero: Department of Geological Sciences and Institute of Arctic and Alpine Research (INSTAAR), University of Colorado Boulder
Julio Sepúlveda: Millennium Institute of Oceanography (IMO), Universidad de Concepción
Alexander Galán: Centro de Investigación de Estudios Avanzados del Maule (CIEAM), Departamento de Obras Civiles, Facultad de Ciencias de la Ingeniería, Universidad Católica del Maule
Ricardo De Pol-Holz: Centro de Investigación GAIA-Antártica (CIGA) and Network for Extreme Environment Research (NEXER), Universidad de Magallanes
Brett Walker: Department of Earth and Environmental Sciences, University of Ottawa
Wolfgang Schneider: Millennium Institute of Oceanography (IMO), Universidad de Concepción
Laura Farías: Coastal Social-Ecological Millennium Institute (SECOS), Universidad de Concepción
Marcela Cornejo D’Ottone: Millennium Institute of Oceanography (IMO), Universidad de Concepción
Jennifer Walker: Department of Earth System Science, University of California
Xiaomei Xu: Department of Earth System Science, University of California
Joe Salisbury: Ocean Process Analysis Lab, University of New Hampshire

DOI: https://doi.org/10.1038/s41467-021-21871-4
Journal volume & issue: Vol. 12, no. 1
pp. 1 – 11

Abstract

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Anoxic marine zones are expanding and intensifying with climate change. Here the authors show that microbial dark carbon fixation influences the carbonate system and the stable isotope composition in waters off Chile, contributing up to 35% of the organic carbon reaching the mesopelagic region.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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