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Large difference in carbon emission – burial balances between boreal and arctic lakes
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2015 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 5Article in journal (Refereed) Published
Abstract [en]

Lakes play an important role in the global carbon (C) cycle by burying C in sediments and emitting CO(2) and CH(4) 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
Nature Publishing Group , 2015. Vol. 5
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:polar:diva-3832DOI: 10.1038/srep14248OAI: oai:DiVA.org:polar-3832DiVA: diva2:1156234
Note

26370519[pmid]

Available from: 2017-11-10 Created: 2017-11-10 Last updated: 2017-11-10

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Publisher's full texthttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC4642577/
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