Monday 30 March 2009
Hungry shrimp eat climate change experiment ☀
It is another nail in the coffin of using ocean fertilisation to cool the planet. Early results from the latest field experiment suggest the technique will fail.
“I think we are seeing the last gasps of ocean iron fertilisation as a carbon storage strategy,” says Ken Caldeira of the Carnegie Institution at Stanford University.
Earlier this month, the controversial Indian-German Lohafex expedition fertilised 300 square kilometres of the Southern Atlantic with six tonnes of dissolved iron. The iron triggered a bloom of phytoplankton, which doubled their biomass within two weeks by taking in carbon dioxide from the seawater. Dead bloom particles were then expected to sink to the ocean bed, dragging carbon along with them.
