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The representation of cyanobacteria life cycle processes in aquatic ecosystem models

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  • Hense, Inga
  • Beckmann, Aike

Abstract

Two simplified versions of a numerical life cycle model for diazotrophic cyanobacteria (of the order Nostocales) are developed and evaluated. Both consider two-life cycle stages, one growing, nitrogen-fixing stage and one stage that combines the resting, germinating and vegetative stages. The versions differ in the vertical resolution of the non-diazotrophic stage: version 1 collects the biomass in one layer at the bottom, version 2 considers sinking and rising of biomass explicitly. The results of the two versions are compared with a complex cyanobacteria life cycle model which describes four different life cycle stages each with two internal quotas for energy and nitrogen. The two simplified approaches show a good agreement with respect to the main characteristics of cyanobacteria dynamics (timing and duration of blooms, magnitude of nitrogen fixation, interannual variability). Our model study shows that both simplified approaches are suitable to be implemented into three-dimensional coastal or lake models.

Suggested Citation

  • Hense, Inga & Beckmann, Aike, 2010. "The representation of cyanobacteria life cycle processes in aquatic ecosystem models," Ecological Modelling, Elsevier, vol. 221(19), pages 2330-2338.
    • Handle: RePEc:eee:ecomod:v:221:y:2010:i:19:p:2330-2338
    DOI: 10.1016/j.ecolmodel.2010.06.014
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    References listed on IDEAS

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    1. Hense, Inga & Burchard, Hans, 2010. "Modelling cyanobacteria in shallow coastal seas," Ecological Modelling, Elsevier, vol. 221(2), pages 238-244.
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    Cited by:

    1. Shimoda, Yuko & Arhonditsis, George B., 2016. "Phytoplankton functional type modelling: Running before we can walk? A critical evaluation of the current state of knowledge," Ecological Modelling, Elsevier, vol. 320(C), pages 29-43.
    2. Ertürk, Ali & Sakurova, Ilona & Zilius, Mindaugas & Zemlys, Petras & Umgiesser, Georg & Kaynaroglu, Burak & Pilkaitytė, Renata & Razinkovas-Baziukas, Artūras, 2023. "Development of a pelagic biogeochemical model with enhanced computational performance by optimizing ecological complexity and spatial resolution," Ecological Modelling, Elsevier, vol. 486(C).
    3. Inga Hense & H. Meier & Sebastian Sonntag, 2013. "Projected climate change impact on Baltic Sea cyanobacteria," Climatic Change, Springer, vol. 119(2), pages 391-406, July.

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