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A preliminary model of iron fertilisation by baleen whales and Antarctic krill in the Southern Ocean: Sensitivity of primary productivity estimates to parameter uncertainty

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  • Ratnarajah, Lavenia
  • Melbourne-Thomas, Jessica
  • Marzloff, Martin P.
  • Lannuzel, Delphine
  • Meiners, Klaus M.
  • Chever, Fanny
  • Nicol, Stephen
  • Bowie, Andrew R.

Abstract

Large marine animals may play a crucial role in storing and recycling bioavailable iron in surface waters by consuming iron-rich prey and subsequent defecation of iron that is excess to their requirements. This biological recycling of iron could enhance primary productivity in iron-limited waters. However, quantifying the effects of marine animals on ocean primary productivity remains challenging because of a limited understanding of the key biogeochemical processes involved. In this paper, we develop a preliminary model that explores these uncertainties and examines the potential effects of historical populations of blue, fin and humpback whales, and the biomass of Antarctic krill required to support the whale populations, on primary productivity in the Southern Ocean.

Suggested Citation

  • Ratnarajah, Lavenia & Melbourne-Thomas, Jessica & Marzloff, Martin P. & Lannuzel, Delphine & Meiners, Klaus M. & Chever, Fanny & Nicol, Stephen & Bowie, Andrew R., 2016. "A preliminary model of iron fertilisation by baleen whales and Antarctic krill in the Southern Ocean: Sensitivity of primary productivity estimates to parameter uncertainty," Ecological Modelling, Elsevier, vol. 320(C), pages 203-212.
    • Handle: RePEc:eee:ecomod:v:320:y:2016:i:c:p:203-212
    DOI: 10.1016/j.ecolmodel.2015.10.007
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    Cited by:

    1. Goedegebuure, Merel & Melbourne-Thomas, Jessica & Corney, Stuart P. & Hindell, Mark A. & Constable, Andrew J., 2017. "Beyond big fish: The case for more detailed representations of top predators in marine ecosystem models," Ecological Modelling, Elsevier, vol. 359(C), pages 182-192.
    2. Oleg Belyaev & Erica Sparaventi & Gabriel Navarro & Araceli Rodríguez-Romero & Antonio Tovar-Sánchez, 2023. "The contribution of penguin guano to the Southern Ocean iron pool," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    3. Lola Gilbert & Tiphaine Jeanniard-du-Dot & Matthieu Authier & Tiphaine Chouvelon & Jérôme Spitz, 2023. "Composition of cetacean communities worldwide shapes their contribution to ocean nutrient cycling," Nature Communications, Nature, vol. 14(1), pages 1-13, December.

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