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On the relative constancy of iodate and total‐iodine concentrations accompanying phytoplankton blooms initiated in mesocosm experiments in Antarctica
Author(s) -
Truesdale VictorW.,
Kennedy Hilary,
Agusti Susana,
Waite TimJ.
Publication year - 2003
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.2003.48.4.1569
Subject(s) - iodate , mesocosm , phytoplankton , seawater , iodine , oceanography , environmental chemistry , bloom , nutrient , particulates , environmental science , algal bloom , chemistry , hydrography , ecology , biology , geology , organic chemistry
The integrated iodate and total‐iodine concentrations accompanying accelerated growth of natural phytoplankton in eight 14‐m deep mesocosm experiments did not vary significantly. Growth was induced by the addition of nutrients, while light irradiance was controlled by neutral density screens. These measures resulted in a range of particulate organic carbon concentrations of between 13 and 220 µmol L −1 , that is, covering some that are well in excess of blooms generally found in the natural environment. This, together with most earlier results obtained from phytoplankton culturing and much hydrographic survey, is used as an opportunity to question whether phytoplankton growth can be the cause of iodate reduction in seawater.