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Three-dimensional modeling of the lower trophic levels in the Ria de Aveiro (Portugal)

Author

Listed:
  • Rodrigues, M.
  • Oliveira, A.
  • Queiroga, H.
  • Fortunato, A.B.
  • Zhang, Y.J.

Abstract

The water and the ecosystem dynamics of the Ria de Aveiro, a shallow, multi-branch lagoon located on the northwest coast of Portugal, are simulated using a new fully coupled 3D modeling system. This model couples the hydrodynamic model SELFE (semi-implicit Eulerian-Lagrangian finite element) and an ecological model extended from EcoSim 2.0 to represent zooplankton dynamics. The model application is based on an unstructured grid spatial discretization, which is particularly appropriate for this system given its complex geometry. The baroclinic circulation is calibrated and validated for different environmental conditions, leading to velocity errors smaller than 5cm/s across the lagoon. Ecological simulations, focused on zooplankton dynamics represented by a site-specific formulation, are then presented and compared against field data for two contrasting environmental conditions: Autumn 2000 and Spring 2001. Results show that the fully coupled model is able to reproduce the dynamics of the ecosystem in the Spring 2001, fitting the model results inside the range of data variation. During this period zooplankton differences between data and model results are of about 0.005mgC/l (60%), while other ecological tracers’ differences are generally smaller than 20–30% along the several branches of the lagoon. In the Autumn 2000, the model tends to overestimate zooplankton by a factor of 10 and to underestimate phytoplankton and ammonium, with discrepancies of about 0.1mgC/l and 4.8μmolN/l, respectively. Factors like the ecological conditions imposed at the boundaries, the input parameters of the ecological model and the simplification of the ecosystem structure, since phytoplankton is the only primary producer considered, may explain the observed differences.

Suggested Citation

  • Rodrigues, M. & Oliveira, A. & Queiroga, H. & Fortunato, A.B. & Zhang, Y.J., 2009. "Three-dimensional modeling of the lower trophic levels in the Ria de Aveiro (Portugal)," Ecological Modelling, Elsevier, vol. 220(9), pages 1274-1290.
  • Handle: RePEc:eee:ecomod:v:220:y:2009:i:9:p:1274-1290
    DOI: 10.1016/j.ecolmodel.2009.02.002
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    Citations

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    Cited by:

    1. Lopes, José Fortes & Vaz, Nuno & Vaz, Leandro & Ferreira, Juan A. & Dias, João Miguel, 2015. "Assessing the state of the lower level of the trophic web of a temperate lagoon, in situations of light or nutrient stress: A modeling study," Ecological Modelling, Elsevier, vol. 313(C), pages 59-76.
    2. Wei-Bo Chen & Hongey Chen & Lee-Yaw Lin & Yi-Chiang Yu, 2017. "Tidal Current Power Resources and Influence of Sea-Level Rise in the Coastal Waters of Kinmen Island, Taiwan," Energies, MDPI, vol. 10(5), pages 1-15, May.
    3. Chen, Wei-Bo & Liu, Wen-Cheng, 2017. "Assessing the influence of sea level rise on tidal power output and tidal energy dissipation near a channel," Renewable Energy, Elsevier, vol. 101(C), pages 603-616.
    4. 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).
    5. Hung-Ju Shih & Chih-Hsin Chang & Wei-Bo Chen & Lee-Yaw Lin, 2018. "Identifying the Optimal Offshore Areas for Wave Energy Converter Deployments in Taiwanese Waters Based on 12-Year Model Hindcasts," Energies, MDPI, vol. 11(3), pages 1-21, February.

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