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Volume 12, issue 20
Biogeosciences, 12, 6125–6146, 2015
https://doi.org/10.5194/bg-12-6125-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 12, 6125–6146, 2015
https://doi.org/10.5194/bg-12-6125-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 27 Oct 2015

Research article | 27 Oct 2015

A strong CO2 sink enhanced by eutrophication in a tropical coastal embayment (Guanabara Bay, Rio de Janeiro, Brazil)

L. C. Cotovicz Jr. et al.

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Abril, G., Nogueira, E., Hetcheber, H., Cabeçadas, G., Lemaire, E., and Brogueira, M.: Behaviour of organic carbon in nine contrasting European estuaries, Estuar. Coast. Shelf Sci., 54, 241–262, 2002.
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Abril G., Commarieu M., Maro D., Fontugne M., Guérin F., and Etcheber, H.: A massive dissolved inorganic carbon release at spring tide in a highly turbid estuary, Geophys. Res. Lett., 31, L09316, https://doi.org/10.1029/2004GL019714, 2004.
Abril, G., Richard, S., and Guérin, F.: In-situ measurements of dissolved gases (CH4 and CO2) in a wide range of concentrations in a tropical reservoir using an equilibrator, Sci. Total Environ, 354, 246–251, 2006.
Abril, G., Commarieu, M., Sottolichio, A., Bretel, P., and Guérin, F.: Turbidity limits gas exchange in a large macrotidal estuary, Estuar. Coast. Shelf Sci., 83, 342–348, 2009.
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Air-water CO2 fluxes were monitored in Guanabara Bay (Brazil), a tropical eutrophic coastal embayment. In contrast to other estuaries worldwide, Guanabara Bay behaves as an annual CO2 sink (-9.6 to -18.3 molC m2 yr) due to the concomitant effects of strong radiation, thermal stratification, and high availability of nutrients, which promotes huge phytoplankton development and autotrophy. Our results show that CO2 budget assertions still lack information on tropical marine-dominated estuaries.
Air-water CO2 fluxes were monitored in Guanabara Bay (Brazil), a tropical eutrophic coastal...
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