Brian Griffiths

TL;DR: It is found that a large phytoplankton bloom over the Kerguelen plateau in the Southern Ocean was sustained by the supply of iron and major nutrients to surface waters from iron-rich deep water below, suggesting that changes in iron supply from below may have a more significant effect on atmospheric carbon dioxide concentrations than previously thought.

TL;DR: In this paper, the stability of the f ratio appeared closely related to the availability of both dissolved iron and ammonium and factorial experiments based on controlled ammonium additions were used to study the sensitivity of f ratio relative to perturbations of the regenerated nutrient supply.

TL;DR: The Kerguelen Ocean and Plateau compared study (KEOPS) as discussed by the authors investigated the impact on surface concentrations of DMS and its precursor, particulate dimethylsulphoniopropionate (DMSPp), of iron supplied by mixing from below.

TL;DR: In this article, the authors evaluated the sufficiency of ambient iron and nutrient levels for algal growth in surface waters of the Crozet Basin, in the Indian-Subantarctic region of the Southern Ocean, during the Antares-IV campaign in January-February 1999.

TL;DR: In this article, the authors used a coupled 1D physical-biogeochemical ocean model to estimate the dissolved iron requirements of the native phytoplankton community in this oceanic region, in order to improve the parameterisation of iron as a limitingnutrient in a coupled ocean model.