CHALKY waters of the Icelandic Basin | MASTS Open Forum Session
Автор: MASTS
Загружено: 2025-02-25
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The MASTS Biogeochemistry Forum was excited to host this free online Open Forum Session with a talk on coccolithophore blooms by Dr Sarah Cryer, Heriot-Watt University:
The ability of the ocean to sequester CO2 is determined by its carbonate chemistry, which can be altered by calcifying organisms. One such group are the coccolithophores, which are phytoplankton that surround themselves with microscopic calcite scales known as coccoliths. These coccoliths are often shed by the cell and when high rates of shedding occur, the ocean turns milky, which can be visible from space. To understand the physiology of coccolithophore blooms and its impact on ocean alkalinity, a bloom was sampled in the Icelandic Basin in 2024. This allowed us to analyse changes in coccolithophore growth rates, turnover of particulate inorganic carbon, species composition and nutrient depletion across the bloom. Using this data we hope to investigate the impact of coccolithophores on total alkalinity and the fate of this alkalinity.
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