Articles | Volume 15, issue 22
https://doi.org/10.5194/bg-15-6979-2018
https://doi.org/10.5194/bg-15-6979-2018
Research article
 | 
21 Nov 2018
Research article |  | 21 Nov 2018

Large variations in iron input to an oligotrophic Baltic Sea estuary: impact on sedimentary phosphorus burial

Wytze K. Lenstra, Matthias Egger, Niels A. G. M. van Helmond, Emma Kritzberg, Daniel J. Conley, and Caroline P. Slomp

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Cited articles

Algesten, G., Brydsten, L., Jonsson, P., Kortelainen, P., Löfgren, S., Rahm, L., Räike, A., Sobek, S., Tranvik, L., Wikner, J., and Jansson, M.: Organic carbon budget for the Gulf of Bothnia, J. Marine Syst., 63, 155–161, https://doi.org/10.1016/j.jmarsys.2006.06.004, 2006. a, b, c, d, e
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We show that burial rates of phosphorus (P) in an estuary in the northern Baltic Sea are very high. We demonstrate that at high sedimentation rates, P retention in the sediment is related to the formation of vivianite. With a reactive transport model, we assess the sensitivity of sedimentary vivianite formation. We suggest that enrichments of iron and P in the sediment are linked to periods of enhanced riverine input of Fe, which subsequently strongly enhances P burial in coastal sediments.
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