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Posted Tue Apr 16 2013: from UCSB, via PhysOrg:
Effect of ocean acidification may not be so dire
"The story years ago was that ocean acidification was going to be bad, really bad for calcifiers," said Iglesias-Rodriguez, whose team discovered that one species of the tiny single celled marine coccolithophore, Emiliania huxleyi, actually had bigger shells in high carbon dioxide seawater conditions. While the team acknowledges that calcification tends to decline with acidification, "we now know that there are variable responses in sea corals, in sea urchins, in all shelled organisms that we find in the sea."... "The E. huxleyi increased the amount of calcite they had because they kept calcifying but slowed down division rates,"slower growth could become problematic. If other species grow faster, E. huxleyi could be outnumbered in some areas.
[Read more stories about: ocean acidification, ecosystem interrelationships, carbon sinks]
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