In simulations run by the researchers, they found that nutrient Pollution can obscure these vital signs until a climate tipping point arrives without any apparent forewarning. However, external factors, like nitrogen increase from agricultural runoff, could dampen these warning signals. Such patterns could serve as Climate change sentinels if accurately monitored. Just before these microbial communities switch to emitting carbon dioxide, their population begins to fluctuate unpredictably. This shift suggests that as temperatures rise, these tiny creatures could swap their cooling effect on the planet for a warming one.Īlarmingly, the study also uncovered potential early warning signals for Climate change tipping points. Researchers from Duke University and the University of California Santa Barbara discovered that under warming conditions, these microbes transition from being carbon sinks-absorbing more carbon dioxide than they release-to carbon emitters.
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