Global CO2 emissions from dry inland waters share common drivers across ecosystems
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Catalan, N
von Schiller, D
Grossart, H-P
Koschorreck, M
Obrador, B
Frassl, MA
Karakaya, N
Barros, N
Howitt, JA
Mendoza-Lera, C
Pastor, A
Flaim, G
Leigh, C
et al.
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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.
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Nature Communications
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11
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1
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© The Author(s) 2020. his article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
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Environmental sciences
Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
CARBON-DIOXIDE EMISSIONS
GREENHOUSE-GAS EMISSIONS
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Keller, PS; Catalan, N; von Schiller, D; Grossart, H-P; Koschorreck, M; Obrador, B; Frassl, MA; Leigh, C; et al., Global CO2 emissions from dry inland waters share common drivers across ecosystems, Nature Communications, 2020, 11 (1), pp. 2126