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| Titel |
Carbon pathways in the Seine river system |
| VerfasserIn |
Audrey Marescaux, Josette Garnier, Vincent Thieu |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250135827
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| Publikation (Nr.) |
 EGU/EGU2016-16738.pdf |
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| Zusammenfassung |
| Many papers have recently suggested that the anthropogenic perturbations of the carbon cycle
have led to a significant increase in carbon export from terrestrial ecosystems to inland
waters. The quantification of the carbon cascade (including fate of CO2 emissions) in highly
anthropized river systems is thus essential to understand the response of aquatic
systems.
The Seine Basin where Paris and its environs represent 2/3 of its population, and
agriculture is particularly intensive, is a eutrophic system. The main aim of this research is to
understand and quantify how an excess of anthropogenic nutrients entering the Seine River
system may locally enhance primary production, C sequestration, C respiration and CO2
emissions.
The development of a new CO2 module in the pre-existing biogeochemical Riverstrahler
model (Billen et al., 2007) should enable a refined calculation of the carbon budget. Besides
calculation of the Respiration and Production activities along the entire river continuum, it
will directly associate CO2 emissions. The CO2 modelling results will be confronted to
(i) direct (in-situ) measurements with a non-dispersive infrared gas analyzer and
(ii) indirect measurements based on total alkalinity, carbonate and pH along the
Seine river system during the last decades, and (iii) calculations of a C metabolism
budget.
Billen, G., Garnier, J., Némery, J., Sebilo, M., Sferratore, A., Barles, S., Benoit P., Benoît,
M. (2007). A long-term view of nutrient transfers through the Seine river continuum. Science
of the Total Environment, 375(1-3), 80–97. http://doi.org/10.1016/j.scitotenv.2006.12.005 |
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