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Prey-abundance affects zooplankton assimilation efficiency and the outcome of biogeochemical models

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  • Montagnes, David J.S.
  • Fenton, Andy

Abstract

Aquatic biogeochemical models that include zooplankton feeding on phytoplankton assess a range of ecologically important issues. Such models generally assume assimilation efficiency (e) to be invariant with prey abundance. We first review the literature and make a strong case for recognising and quantifying the general dependence of e on prey abundance. Then, using two standard, fundamental multi-trophic models (the Rosenzweig–MacArthur, RM, predator–prey couplet and the nutrient-phytoplankton-zooplankton, NPZ, models) we explore how varying e with prey abundance alters the outcome of models. Incorporating variable e into both models altered their dynamics, potentially in important and counterintuitive directions. We suggest there is now a need for further empirical consideration of the extent to which zooplankton e changes with phytoplankton abundance, specifically focusing on the shape of this response, and then for continued assessment of the impact of variable e on model dynamics.

Suggested Citation

  • Montagnes, David J.S. & Fenton, Andy, 2012. "Prey-abundance affects zooplankton assimilation efficiency and the outcome of biogeochemical models," Ecological Modelling, Elsevier, vol. 243(C), pages 1-7.
    • Handle: RePEc:eee:ecomod:v:243:y:2012:i:c:p:1-7
    DOI: 10.1016/j.ecolmodel.2012.05.006
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    References listed on IDEAS

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    1. Saraiva, S. & van der Meer, J. & Kooijman, S.A.L.M. & Sousa, T., 2011. "Modelling feeding processes in bivalves: A mechanistic approach," Ecological Modelling, Elsevier, vol. 222(3), pages 514-523.
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    Cited by:

    1. Galina Neverova & Oksana Zhdanova, 2023. "Mathematical Modeling of the Evolutionary Dynamics of a Planktonic Community Using a Discrete-Time Model," Mathematics, MDPI, vol. 11(22), pages 1-24, November.

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