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

Philipp Keller, Núria Catalán, Daniel von Schiller, Hans-Peter Grossart, Matthias Koschorreck, Biel Obrador, Marieke Anna Frassl, Nusret Karakaya, Nathan Barros, Julia Howitt, Clara Mendoza-Lera, Ada Pastor, Giovanna Flaim, R Aben, T Riis, M Arce, Gabriela Onandia, José R. Paranaíba, Annika Linkhorst, Rubén del CampoAndre Amado, Sophie Cauvy-Fraunié, Soren Brothers, Jason Condon, R Mendonca, F Reverey, E Room, Thibault Datry, Fabio Roland, Alo Laas, Ulrike Obertegger, J Park, Haijun Wang, Sarian Kosten, Rosa Gómez, Claudia Feijoó, Arturo Elosegi, M Sánchez-Montoya, Max Finlayson, M Melita, E Oliveira Junior, Claumir Muniz, L Gómez-Gener, Catherine Leigh, Q Zhang, Rafael Marcé

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54 Citations (Scopus)
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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.
Original languageEnglish
Article number 2126
Pages (from-to)1-8
Number of pages8
JournalNature Communications
Publication statusPublished - 01 May 2020


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