Ocean ‘dead zones’ spell disaster as wind patterns change

few months ago, the clear blue Pacific Ocean waters off the coast of Oregon suddenly turned a thick greenish brown. A swell of nutrients produced a bizarre blooming of plankton that reached levels never seen before by scientists. Then the plankton died and sank, causing oxygen levels in the water to plummet to zero.

Marine researchers are convinced the evidence points to one culprit: global warming. Man-made changes to the climate are throwing previously predictable seasonal winds out of kilter. ‘We finger the winds as the important culprit, but we do not know definitively why these winds are changing,’ said Professor Jane Lubchenco from Oregon State University. ‘However, we know the changes are what would be expected under climate change scenarios, and climate change is a viable hypothesis. We should expect more surprises.’

guardian