Blooming marvellous
Experiments have shown that an iron boost can dramatically increase phytoplankton numbers. But scientists need to watch the plankton blooms for longer to make sure that they die and carry the carbon dioxide with them into the deep.
'You have to be wary because you're altering the ocean ecosystem and it's not clear what the effects could be. We need to know more about this before we carry out any large-scale projects'. Andrew Watson, University of East Anglia
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Satellite image of phytoplankton bloom (bright colours) in the Southern Ocean
Image: NASA |
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