Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/125891
Title: Dry habitats sustain high CO2 emissions from temporary ponds across seasons
Author: Obrador Sala, Biel
von Schiller, Daniel
Marce, Rafael
Gomez-Gener, Lluis
Koschorreck, Matthias
Borrego, Carles
Catalan, Nuria
Keywords: Diòxid de carboni
Sequeres
Metà
Estany
Carbon dioxide
Droughts
Methane
Tin
Issue Date: 14-Feb-2018
Publisher: Nature Publishing Group
Abstract: Despite the increasing understanding of the magnitude and drivers of carbon gas emissions from inland waters, the relevance of water fluctuation and associated drying on their dynamics is rarely addressed. Here, we quantified CO2 and CH4 fluxes from a set of temporary ponds across seasons. The ponds were in all occasion net CO2 emitters irrespective of the presence or absence of water. While the CO2 fluxes were in the upper range of emissions for freshwater lentic systems, CH4 fluxes were mostly undetectable. Dry habitats substantially contributed to these emissions and were always a source of CO2, whereas inundated habitats acted either as a source or a sink of atmospheric CO2 along the year. Higher concentrations of coloured and humic organic matter in water and sediment were linked to higher CO2 emissions. Composition of the sediment microbial community was related both to dissolved organic matter concentration and composition, but we did not find a direct link with CO2 fluxes. The presence of methanogenic archaea in most ponds suggested the potential for episodic CH4 production and emission. Our results highlight the need for spatially and temporally inclusive approaches that consider the dry phases and habitats to characterize carbon cycling in temporary systems.
Note: Reproducció del document publicat a: https://doi.org/10.1038/s41598-018-20969-y
It is part of: Scientific Reports, 2018, vol. 8, p. 3015
URI: http://hdl.handle.net/2445/125891
Related resource: https://doi.org/10.1038/s41598-018-20969-y
ISSN: 2045-2322
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
Articles publicats en revistes (Institut de Recerca de la Biodiversitat (IRBio))

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