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Title: Emissions from dry inland waters are a blind spot in the global carbon cycle
Author: Marcé Romero, Rafael
Obrador Sala, Biel
Gómez Gener, Lluís
Catalán García, Núria
Koschorreck, Matthias
Arce, María Isabel
Singer, Gabriel
von Schiller, Daniel
Keywords: Diòxid de carboni
Cursos d'aigua
Carbon dioxide
Issue Date: Jan-2019
Publisher: Elsevier B.V.
Abstract: A large part of the world's inland waters, including streams, rivers, ponds, lakes and reservoirs is subject to occasional, recurrent or even permanent drying. Moreover, the occurrence and intensity of drying events are increasing in many areas of the world because of climate change, water abstraction, and land use alteration. Yet, information on the gaseous carbon (C) fluxes from dry inland waters is scarce, thus precluding a comprehensive assessment of C emissions including all, also intermittently dry, inland waters. Here, we review current knowledge on gaseous C fluxes from lotic (streams and rivers) and lentic (ponds, lakes, and reservoirs) inland waters during dry phases and the response to rewetting, considering controls and sources as well as implications of including 'dry' fluxes for local and global scale estimates. Moreover, knowledge gaps and research needs are discussed. Our conservative estimates indicate that adding emissions from dry inland waters to current global estimates of CO2 emissions from inland waters could result in an increase of 0.22 Pg C year−1, or ~10% of total fluxes. We outline the necessary conceptual understanding to successfully include dry phases in a more complete picture of inland water C emissions and identify potential implications for global C cycle feedbacks.
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It is part of: Earth-Science Reviews, 2019, vol. 188, p. 240-248
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ISSN: 0012-8252
Appears in Collections:Articles publicats en revistes (Institut de Recerca de la Biodiversitat (IRBio))
Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

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