Cross continental increase in methane ebullition under climate change.

Autor: Aben RCH; Department of Aquatic Ecology and Environmental Biology, Institute for Water and Wetland Research, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands.; Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 50, 6708 PB, Wageningen, The Netherlands., Barros N; Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, 36036-900, Brazil., van Donk E; Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 50, 6708 PB, Wageningen, The Netherlands.; Department of Ecology and Biodiversity, University of Utrecht, P.O. Box 80.056, 3508 TB, Utrecht, The Netherlands., Frenken T; Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 50, 6708 PB, Wageningen, The Netherlands., Hilt S; Department of Ecosystem Research, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 301, 12587, Berlin, Germany., Kazanjian G; Department of Ecosystem Research, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 301, 12587, Berlin, Germany., Lamers LPM; Department of Aquatic Ecology and Environmental Biology, Institute for Water and Wetland Research, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands.; B-WARE Research Centre, P.O. Box 6558, 6503 GB, Nijmegen, The Netherlands., Peeters ETHM; Department of Aquatic Ecology and Water Quality Management, Wageningen University, P.O. Box 47, 6708 PB, Wageningen, The Netherlands., Roelofs JGM; Department of Aquatic Ecology and Environmental Biology, Institute for Water and Wetland Research, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands.; B-WARE Research Centre, P.O. Box 6558, 6503 GB, Nijmegen, The Netherlands., de Senerpont Domis LN; Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 50, 6708 PB, Wageningen, The Netherlands.; Department of Aquatic Ecology and Water Quality Management, Wageningen University, P.O. Box 47, 6708 PB, Wageningen, The Netherlands., Stephan S; Department of Experimental Limnology, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Alte Fischerhütte 2, OT Neuglobsow, 16775, Stechlin, Germany., Velthuis M; Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 50, 6708 PB, Wageningen, The Netherlands., Van de Waal DB; Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 50, 6708 PB, Wageningen, The Netherlands., Wik M; Department of Geological Sciences and Bolin Centre for Climate Research, Stockholm University, Stockholm, SE-10691, Sweden., Thornton BF; Department of Geological Sciences and Bolin Centre for Climate Research, Stockholm University, Stockholm, SE-10691, Sweden., Wilkinson J; University of Koblenz-Landau, Institute for Environmental Sciences, Fortstr. 7, 76829, Landau, Germany., DelSontro T; Groupe de Recherche Interuniversitaire en Limnologie (GRIL), Département des Sciences Biologiques, Université du Québec à Montréal, Montréal, Canada, H3C 3P8, QC., Kosten S; Department of Aquatic Ecology and Environmental Biology, Institute for Water and Wetland Research, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands. S.Kosten@science.ru.nl.; Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 50, 6708 PB, Wageningen, The Netherlands. S.Kosten@science.ru.nl.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2017 Nov 22; Vol. 8 (1), pp. 1682. Date of Electronic Publication: 2017 Nov 22.
DOI: 10.1038/s41467-017-01535-y
Abstrakt: Methane (CH 4 ) strongly contributes to observed global warming. As natural CH 4 emissions mainly originate from wet ecosystems, it is important to unravel how climate change may affect these emissions. This is especially true for ebullition (bubble flux from sediments), a pathway that has long been underestimated but generally dominates emissions. Here we show a remarkably strong relationship between CH 4 ebullition and temperature across a wide range of freshwater ecosystems on different continents using multi-seasonal CH 4 ebullition data from the literature. As these temperature-ebullition relationships may have been affected by seasonal variation in organic matter availability, we also conducted a controlled year-round mesocosm experiment. Here 4 °C warming led to 51% higher total annual CH 4 ebullition, while diffusion was not affected. Our combined findings suggest that global warming will strongly enhance freshwater CH 4 emissions through a disproportional increase in ebullition (6-20% per 1 °C increase), contributing to global warming.
Databáze: MEDLINE