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The Baltic Sea a century ago – a reconstruction from model simulations, verified by observations.
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
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2008 (English)In: Journal of Marine Systems, Vol. 74, 485-494 p.Article in journal (Refereed) Published
Abstract [en]

“Pre-industrial” trophic conditions in the Baltic Sea were simulated with SANBALTS (Simple As Necessary BAltic Long-Term large Scale) model. External nutrient inputs to the major basins of the Baltic Sea a century ago were reconstructed from various literature and data sources. The reconstructed input of total nitrogen was less than a half and that of total phosphorus was about a third of their contemporary values. The simulated “pre-industrial” conditions are validated by comparison to actual historical data on the water transparency, oxygen concentration, primary production, and net sediment accumulation. The “pre-industrial” trophic state could have been more phosphorus limited than today because simulated basin-wide annual averages of dissolved inorganic phosphorus concentrations of 0.06–0.3 µM P are about 40–80% of their present day values, while dissolved inorganic nitrogen concentrations of 2–4 µM N are almost the same as today or even slightly higher.

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2008. Vol. 74, 485-494 p.
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URN: urn:nbn:se:su:diva-15622DOI: doi:10.1016/j.jmarsys.2008.03.008ISI: 000261256100030OAI: diva2:182142
Baltic Nest Institute, Stockholm University, SE 10691, Stockholm, Sweden Baltic Sea Research Institute, Seestrasse 15, DE 18119, Warnemünde, Germany Department of Applied Environmental Science, Stockholm University, SE-10691 Stockholm, SwedenAvailable from: 2008-12-07 Created: 2008-12-07 Last updated: 2011-01-10Bibliographically approved

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Wulff, FredrikHumborg, Christoph
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Department of Applied Environmental Science (ITM)

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