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| Titel |
Eutrophication counteracts ocean acidification effects on DMS emissions |
| VerfasserIn |
Nathalie Gypens, Alberto V. Borges |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250098277
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| Publikation (Nr.) |
 EGU/EGU2014-14753.pdf |
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| Zusammenfassung |
| The accumulation of anthropogenic CO2 in the ocean has altered carbonate chemistry in
surface waters since pre-industrial times and is expected to continue to do so in the coming
centuries (ocean acidification). Changes in carbonate chemistry can modify the rates and fates
of marine primary production and calcification. Available information from manipulative
experiments suggests that the emission of dimethylsulfide (DMS) would decrease in response
to ocean acidification. However, in coastal environments it has been shown that
carbonate chemistry in surface waters has strongly responded to eutrophication
during the last 50 years. Here, we test the hypothesis that DMS emissions also
strongly respond to eutrophication in addition to ocean acidification at decadal
timescales. We use the MIRO-BIOGAS model setup in the strongly eutrophied Southern
Bight of the North Sea characterized by intense blooms of Phaeocystis that are
strong producers of dimethylsulfoniopropionate (DMSP), the precursor of DMS. |
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