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Ecosystem modelling across a salinity gradient from the North Sea to the Baltic Sea

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Listed:
  • Maar, Marie
  • Møller, Eva Friis
  • Larsen, Jesper
  • Madsen, Kristine Skovgaard
  • Wan, Zhenwen
  • She, Jun
  • Jonasson, Lars
  • Neumann, Thomas

Abstract

Several ecosystem models with different complexity have previously been developed and applied either to the North Sea or the Baltic Sea. However, no attempts have been made to develop and validate a common ecological model covering both areas. In the present study, we applied a modified version of the Baltic Sea ecological model ERGOM (Ecological ReGional Ocean Model) coupled to the 3D circulation model DMI-BSHcmod with a two-way nested fine grid in the Danish straits. ERGOM was adapted to the North Sea by (1) adding silicate, (2) introducing two zooplankton groups and modifying their grazing impact and (3) adjusting light parameterisations. The recalibrated ERGOM model was validated against climatologically surface data of nutrients and measurements from nine monitoring stations in 2004–2006. The validation showed in general a ‘good’ to ‘very good’ agreement with measurements of surface temperature, salinity, DIN, PO4, SiO2 and Chl a and bottom O2 based on cost function values and correlation analysis. However, some deviations were found between model results and observations emphasizing that the descriptions of oxygen dynamics, light attenuation, remineralisation and nutrient loadings in the ecosystem model should be improved in future studies. In conclusion, the modified ecosystem model could reproduce the seasonal and regional patterns in the whole North Sea – Baltic Sea area and can be applied in future studies in these areas.

Suggested Citation

  • Maar, Marie & Møller, Eva Friis & Larsen, Jesper & Madsen, Kristine Skovgaard & Wan, Zhenwen & She, Jun & Jonasson, Lars & Neumann, Thomas, 2011. "Ecosystem modelling across a salinity gradient from the North Sea to the Baltic Sea," Ecological Modelling, Elsevier, vol. 222(10), pages 1696-1711.
    • Handle: RePEc:eee:ecomod:v:222:y:2011:i:10:p:1696-1711
    DOI: 10.1016/j.ecolmodel.2011.03.006
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    References listed on IDEAS

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    1. Stegert, Christoph & Kreus, Markus & Carlotti, Francois & Moll, Andreas, 2007. "Parameterisation of a zooplankton population model for Pseudocalanus elongatus using stage durations from laboratory experiments," Ecological Modelling, Elsevier, vol. 206(3), pages 213-230.
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    1. Wan, Zhenwen & Bi, Hongsheng & She, Jun, 2013. "Comparison of two light attenuation parameterization focusing on timing of spring bloom and primary production in the Baltic Sea," Ecological Modelling, Elsevier, vol. 259(C), pages 40-49.
    2. Wan, Zhenwen & Bi, Hongsheng, 2014. "Comparing model scenarios of variable plankton N/P ratio versus the constant one for the application in the Baltic Sea," Ecological Modelling, Elsevier, vol. 272(C), pages 28-39.
    3. Gurkan, Zeren & Christensen, Asbjørn & Maar, Marie & Møller, Eva Friis & Madsen, Kristine Skovgaard & Munk, Peter & Mosegaard, Henrik, 2013. "Spatio-temporal dynamics of growth and survival of Lesser Sandeel early life-stages in the North Sea: Predictions from a coupled individual-based and hydrodynamic–biogeochemical model," Ecological Modelling, Elsevier, vol. 250(C), pages 294-306.
    4. Kari Hyytiäinen & Lassi Ahlvik & Heini Ahtiainen & Janne Artell & Anni Huhtala & Kim Dahlbo, 2015. "Policy Goals for Improved Water Quality in the Baltic Sea: When do the Benefits Outweigh the Costs?," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 61(2), pages 217-241, June.
    5. Mikołaj Czajkowski & Ewa Zawojska & Norman Meade & Ronaldo Seroa da Motta & Mike Welsh & Ramon Arigoni Ortiz, 2022. "On the inference about willingness to pay distribution using contingent valuation data," Working Papers 2022-08, Faculty of Economic Sciences, University of Warsaw.
    6. Czajkowski, Mikołaj & Ahtiainen, Heini & Artell, Janne & Meyerhoff, Jürgen, 2017. "Choosing a Functional Form for an International Benefit Transfer: Evidence from a Nine-country Valuation Experiment," Ecological Economics, Elsevier, vol. 134(C), pages 104-113.
    7. Nurmi, Väinö & Ahtiainen, Heini, 2018. "Distributional Weights in Environmental Valuation and Cost-benefit Analysis: Theory and Practice," Ecological Economics, Elsevier, vol. 150(C), pages 217-228.
    8. Maar, Marie & Markager, Stiig & Madsen, Kristine Skovgaard & Windolf, Jørgen & Lyngsgaard, Maren Moltke & Andersen, Hans Estrup & Møller, Eva Friis, 2016. "The importance of local versus external nutrient loads for Chl a and primary production in the Western Baltic Sea," Ecological Modelling, Elsevier, vol. 320(C), pages 258-272.
    9. Maar, Marie & Butenschön, Momme & Daewel, Ute & Eggert, Anja & Fan, Wei & Hjøllo, Solfrid S. & Hufnagl, Marc & Huret, Martin & Ji, Rubao & Lacroix, Geneviève & Peck, Myron A. & Radtke, Hagen & Sailley, 2018. "Responses of summer phytoplankton biomass to changes in top-down forcing: Insights from comparative modelling," Ecological Modelling, Elsevier, vol. 376(C), pages 54-67.
    10. Schernewski, Gerald & Friedland, Rene & Carstens, Marina & Hirt, Ulrike & Leujak, Wera & Nausch, Günther & Neumann, Thomas & Petenati, Thorkild & Sagert, Sigrid & Wasmund, Norbert & Weber, Mario von, 2015. "Implementation of European marine policy: New water quality targets for German Baltic waters," Marine Policy, Elsevier, vol. 51(C), pages 305-321.

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