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In low oxygen environments, the lack of oxygen influences sediment biogeochemistry and in turn sediment-water fluxes. These nonlinear interactions are often missing from biogeochemical circulation models because sediment models are computationally expensive. A method for parameterizing realistic sediment-water fluxes is presented and applied to the Mississippi River Dead Zone where high primary production, stimulated by excess nutrient loads, promotes low bottom water conditions in summer.
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Articles | Volume 13, issue 1
Biogeosciences, 13, 77–94, 2016
https://doi.org/10.5194/bg-13-77-2016

Special issue: Low oxygen environments in marine, fresh and estuarine...

Biogeosciences, 13, 77–94, 2016
https://doi.org/10.5194/bg-13-77-2016

Research article 15 Jan 2016

Research article | 15 Jan 2016

Parameterization of biogeochemical sediment–water fluxes using in situ measurements and a diagenetic model

A. Laurent et al.

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Cited articles

Aller, R. C.: The effects of macrobenthos on chemical properties of marine sediment and overlying water, in: Animal-sediment relations, 53–102, 1982.
Bohlen, L., Dale, A. W., and Wallmann, K.: Simple transfer functions for calculating benthic fixed nitrogen losses and C : N : P regeneration ratios in global biogeochemical models, Global Biogeochem. Cy., 26, GB3029, https://doi.org/10.1029/2011GB004198, 2012.
Boudreau, B. P.: Diagenetic models and their implementation: modelling transport and reactions in aquatic sediments, Springer, 414 pp., 1997.
Boudreau, B. P., Mucci, A., Sundby, B., Luther, G. W., and Silverberg, N.: Comparative diagenesis at three sites on the Canadian continental margin, J. Mar. Res., 56, 1259–1284, https://doi.org/10.1357/002224098765093634, 1998.
Briggs, K. B., Cartwright, G., Friedrichs, C. T., and Shivarudruppa, S.: Biogenic effects on cohesive sediment erodibility resulting from recurring seasonal hypoxia on the Louisiana shelf, Cont. Shelf Res., 93, 17–26, https://doi.org/10.1016/j.csr.2014.11.005, 2014.
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Short summary
In low oxygen environments, the lack of oxygen influences sediment biogeochemistry and in turn sediment-water fluxes. These nonlinear interactions are often missing from biogeochemical circulation models because sediment models are computationally expensive. A method for parameterizing realistic sediment-water fluxes is presented and applied to the Mississippi River Dead Zone where high primary production, stimulated by excess nutrient loads, promotes low bottom water conditions in summer.
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