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Abrupt transitions in dynamics of a NPZD model across Southern Ocean fronts

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  • Priester, C. Robert
  • Melbourne-Thomas, Jessica
  • Klocker, Andreas
  • Corney, Stuart

Abstract

The Southern Ocean is the largest high nutrient, low chlorophyll region in the global ocean and is subject to strong iron limitation. Iron availability is associated with the interaction between the Antarctic Circumpolar Current (ACC) and topographic features such as the Kerguelen Plateau in the Indian Sector of the Southern Ocean. The fronts of the ACC also provide important environmental delineations for Southern Ocean ecosystem structure. Here, we implement a NPZD (nitrogen, phytoplankton, zooplankton, detritus) model together with an optimal control algorithm along three meridional transects across the Antarctic Circumpolar Current. Our study represents the first spatial application of this model, and considers potential environmental drivers of parameter variability and community dynamics.

Suggested Citation

  • Priester, C. Robert & Melbourne-Thomas, Jessica & Klocker, Andreas & Corney, Stuart, 2017. "Abrupt transitions in dynamics of a NPZD model across Southern Ocean fronts," Ecological Modelling, Elsevier, vol. 359(C), pages 372-382.
    • Handle: RePEc:eee:ecomod:v:359:y:2017:i:c:p:372-382
    DOI: 10.1016/j.ecolmodel.2017.05.030
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    References listed on IDEAS

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    1. Y.H. Dai & Y. Yuan, 2001. "An Efficient Hybrid Conjugate Gradient Method for Unconstrained Optimization," Annals of Operations Research, Springer, vol. 103(1), pages 33-47, March.
    2. William G. Sunda & Susan A. Huntsman, 1997. "Interrelated influence of iron, light and cell size on marine phytoplankton growth," Nature, Nature, vol. 390(6658), pages 389-392, November.
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    Cited by:

    1. Choi, Jang-Geun & Lippmann, Thomas C. & Harvey, Elizabeth L., 2023. "Analytical population dynamics underlying harmful algal blooms triggered by prey avoidance," Ecological Modelling, Elsevier, vol. 481(C).

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