Global CO2 emissions from dry inland waters share common drivers across ecosystems

P. S. Keller (), N. Catalán, D. Schiller, H.-P. Grossart, M. Koschorreck, B. Obrador, M. A. Frassl, N. Karakaya, N. Barros, J. A. Howitt, C. Mendoza-Lera, A. Pastor, G. Flaim, R. Aben, T. Riis, M. I. Arce, G. Onandia, J. R. Paranaíba, A. Linkhorst, R. Campo, A. M. Amado, S. Cauvy-Fraunié, S. Brothers, J. Condon, R. F. Mendonça, F. Reverey, E.-I. Rõõm, T. Datry, F. Roland, A. Laas, U. Obertegger, J.-H. Park, H. Wang, S. Kosten, R. Gómez, C. Feijoó, A. Elosegi, M. M. Sánchez-Montoya, C. M. Finlayson, M. Melita, E. S. Oliveira Junior, C. C. Muniz, L. Gómez-Gener, C. Leigh, Q. Zhang and R. Marcé
Additional contact information
P. S. Keller: Helmholtz Centre for Environmental Research—UFZ
N. Catalán: Catalan Institute for Water Research (ICRA)
D. Schiller: Ecology and Environmental Sciences, University of Barcelona
H.-P. Grossart: Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB)
M. Koschorreck: Helmholtz Centre for Environmental Research—UFZ
B. Obrador: Ecology and Environmental Sciences, University of Barcelona
M. A. Frassl: Helmholtz Centre for Environmental Research—UFZ
N. Karakaya: Bolu Abant Izzet Baysal University
N. Barros: Federal University of Juiz de Fora
J. A. Howitt: Charles Sturt University
C. Mendoza-Lera: INRAE, UR RiverLy, Centre de Lyon-Villeurbanne
A. Pastor: Aarhus University
G. Flaim: Research and Innovation Centre, Fondazione Edmund Mach
R. Aben: Institute for Water and Wetland Research, Radboud University
T. Riis: Aarhus University
M. I. Arce: Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB)
G. Onandia: Leibniz Centre for Agricultural Landscape Research (ZALF)
J. R. Paranaíba: Federal University of Juiz de Fora
A. Linkhorst: Uppsala University
R. Campo: University of Innsbruck
A. M. Amado: Federal University of Juiz de Fora
S. Cauvy-Fraunié: INRAE, UR RiverLy, Centre de Lyon-Villeurbanne
S. Brothers: Utah State University
J. Condon: Graham Centre for Agricultural Innovation, Charles Sturt University and New South Wales Department of Primary Industries
R. F. Mendonça: Federal University of Juiz de Fora
F. Reverey: Leibniz Centre for Agricultural Landscape Research (ZALF)
E.-I. Rõõm: Estonian University of Life Sciences
T. Datry: INRAE, UR RiverLy, Centre de Lyon-Villeurbanne
F. Roland: Federal University of Juiz de Fora
A. Laas: Estonian University of Life Sciences
U. Obertegger: Research and Innovation Centre, Fondazione Edmund Mach
J.-H. Park: Ewha Womans University
H. Wang: Chinese Academy of Sciences
S. Kosten: Institute for Water and Wetland Research, Radboud University
R. Gómez: University of Murcia
C. Feijoó: Programa Biogeoquímica de Ecosistemas Dulceacuícolas (BED), Instituto de Ecología y Desarrollo Sustentable (INEDES, CONICET-UNLu)
A. Elosegi: University of the Basque Country (UPV/EHU)
M. M. Sánchez-Montoya: University of Murcia
C. M. Finlayson: Charles Sturt University
M. Melita: Water Research Institute—National Research Council (IRSA-CNR)
E. S. Oliveira Junior: Institute for Water and Wetland Research, Radboud University
C. C. Muniz: University of the State of Mato Grosso
L. Gómez-Gener: Umeå University
C. Leigh: Australian Rivers Institute, Griffith University
Q. Zhang: Nanjing Institute of Geography & Limnology (NIGLAS), Chinese Academy of Sciences
R. Marcé: Catalan Institute for Water Research (ICRA)
Authors registered in the RePEc Author Service: Rafael Gomez

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract Many inland waters exhibit complete or partial desiccation, or have vanished due to global change, exposing sediments to the atmosphere. Yet, data on carbon dioxide (CO2) emissions from these sediments are too scarce to upscale emissions for global estimates or to understand their fundamental drivers. Here, we present the results of a global survey covering 196 dry inland waters across diverse ecosystem types and climate zones. We show that their CO2 emissions share fundamental drivers and constitute a substantial fraction of the carbon cycled by inland waters. CO2 emissions were consistent across ecosystem types and climate zones, with local characteristics explaining much of the variability. Accounting for such emissions increases global estimates of carbon emissions from inland waters by 6% (~0.12 Pg C y−1). Our results indicate that emissions from dry inland waters represent a significant and likely increasing component of the inland waters carbon cycle.

Date: 2020
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DOI: 10.1038/s41467-020-15929-y

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