uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Variability in organic carbon reactivity across lake residence time and trophic gradients
Show others and affiliations
2017 (English)In: Nature Geoscience, ISSN 1752-0894, E-ISSN 1752-0908, Vol. 10, no 11, 832-835 p.Article in journal (Refereed) Published
Abstract [en]

The transport of dissolved organic carbon from land to ocean is a large dynamic component of the global carbon cycle. Inland waters are hotspots for organic matter turnover, via both biological and photochemical processes, and mediate carbon transfer between land, oceans and atmosphere. However, predicting dissolved organic carbon reactivity remains problematic. Here we present in situ dissolved organic carbon budget data from 82 predominantly European and North American water bodies with varying nutrient concentrations and water residence times ranging from one week to 700 years. We find that trophic status strongly regulates whether water bodies act as net dissolved organic carbon sources or sinks, and that rates of both dissolved organic carbon production and consumption can be predicted from water residence time. Our results suggest a dominant role of rapid light-driven removal in water bodies with a short water residence time, whereas in water bodies with longer residence times, slower biotic production and consumption processes are dominant and counterbalance one another. Eutrophication caused lakes to transition from sinks to sources of dissolved organic carbon. We conclude that rates and locations of dissolved organic carbon processing and associated CO2 emissions in inland waters may be misrepresented in global carbon budgets if temporal and spatial reactivity gradients are not accounted for.

Place, publisher, year, edition, pages
2017. Vol. 10, no 11, 832-835 p.
National Category
Geosciences, Multidisciplinary
Identifiers
URN: urn:nbn:se:uu:diva-334878DOI: 10.1038/NGEO3051OAI: oai:DiVA.org:uu-334878DiVA: diva2:1161284
Available from: 2017-11-29 Created: 2017-11-29 Last updated: 2017-11-29

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Kothawala, Dolly N.
In the same journal
Nature Geoscience
Geosciences, Multidisciplinary

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 13 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf