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Large difference in carbon emission: burial balances between boreal and arctic lakes
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. (Arcum)
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
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2015 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 5, 14248Article in journal (Refereed) Published
Abstract [en]

Lakes play an important role in the global carbon (C) cycle by burying C in sediments and emitting CO2 and CH4 to the atmosphere. The strengths and control of these fundamentally different pathways are therefore of interest when assessing the continental C balance and its response to environmental change. In this study, based on new high-resolution estimates in combination with literature data, we show that annual emission: burial ratios are generally ten times higher in boreal compared to subarctic - arctic lakes. These results suggest major differences in lake C cycling between biomes, as lakes in warmer boreal regions emit more and store relatively less C than lakes in colder arctic regions. Such effects are of major importance for understanding climatic feedbacks on the continental C sink - source function at high latitudes. If predictions of global warming and northward expansion of the boreal biome are correct, it is likely that increasing C emissions from high latitude lakes will partly counteract the presumed increasing terrestrial C sink capacity at high latitudes.

Place, publisher, year, edition, pages
2015. Vol. 5, 14248
Keyword [en]
environmental change, global warming
National Category
Ecology Climate Research
Identifiers
URN: urn:nbn:se:umu:diva-109797DOI: 10.1038/srep14248ISI: 000361176900001PubMedID: 26370519OAI: oai:DiVA.org:umu-109797DiVA: diva2:859721
Available from: 2015-10-08 Created: 2015-10-06 Last updated: 2017-12-01Bibliographically approved

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Klaminder, JonatanOlid, CarolinaKarlsson, Jan

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