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| Titel |
Surface water types in the Western Canadian Arctic: geochemical evolution and aquatic carbon transport |
| VerfasserIn |
Joshua F. Dean, Mike F. Billett, Kerry J. Dinsmore, Jason S. Lessels, Lorna Street, Ian Washbourne, Jens-Arne Subke, Doerthe Tetzlaff, Robert Baxter, Philip A. Wookey |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250113256
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| Publikation (Nr.) |
 EGU/EGU2015-13454.pdf |
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| Zusammenfassung |
| Arctic surface waters are a substantial conduit for terrestrial C flow as well as a potential
source of GHGs to the atmosphere – a significant positive feedback to global climate
warming and a key component of the net ecosystem carbon balance in permafrost regions. As
temperatures rise in the Arctic, permafrost thaw deepens releasing C from the landscape into
the aquatic system making streams and lakes increasingly important conduits and reactors
of both allochthonous and autochthonous C. The HYDRA project (“Permafrost
catchments in transition: hydrological controls on carbon cycling and greenhouse gas
budgets”), aims to quantify the assimilation of C and the controls of C movement
between the plant-soil-water-atmosphere continuum. The specific aspect of the project
presented here considers the different aquatic pathways in warming Arctic permafrost
catchments, and the potential role that they play in GHG emissions and aquatic C
cycling.
This study presents the surface water geochemistry of Siksik Creek, a small ( |
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