Recent research shows that most of the world’s ocean plankton could cross a threshold under climate change where instead of soaking up carbon dioxide, they start doing the opposite
But when it comes to climate change projections, 1.5 degrees C above pre-industrial global temperatures is considered the point of no return — when unseasonable heat, droughts, wildfire and marine heat waves become regular aspects of runaway, feedback-looping climate change.In the oceans, as in climate and life, little things also make an outsized difference.
Research suggests that rapid ocean warming could force tropical plankton to move toward the cooler poles, pushing aside plankton species native to those latitudes. This could overturn marine ecosystems throughout the oceans, and cause plankton blooms and die-off zones where insufficient oxygen in the water suffocates marine critters.
In B.C., krill are fished in large quantities as a feed supplement for both fish farms and aquariums. For the past decade, the animal has been thought to be a living early signaller for advancing ocean acidification, one of the effects of global warming.
France Dernières Nouvelles, France Actualités
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