The country is in danger of witnessing a new mass extinction after it was experienced in the Cretaceous 65 million years ago, this time in the oceans, scientists warned in a study published in the journal Science on Thursday.
At the time, it was a meteorite and volcanoes that would sweep life off the face of the earth, but now it is the person who can be responsible.
If the climate changes they do not have a sharp and rapid response, the greenhouse gases that heat the oceans and consume their oxygen, added to the destruction of habitats, overfishing and pollution of coastal areas destroy marine life.
An article signed by researchers at the Universities of Washington and Princeton recalled that Emissions of large anthropogenic greenhouse gases are radically changing the global climate system and threatening many species.
The study warned that while the impact of climate on biodiversity is difficult to detect, especially for ocean life, fossil records illustrating past periods of mass extinction caused by radical environmental change, “The future of ocean life as we know it under the prevailing climate change is uncertain.”
from a broad ecophysiological model, what emphasizes the physiological limits of the species according to forecasts of sea temperature and oxygen, the study’s authors Justin Penn and Curtis Deutsch evaluated the risk of extinction of ocean species in different global warming scenarios.
Its conclusion was that If global warming continues steadily, it is likely that marine ecosystems across the planet will experience massive extinctions of the same size and severity. By the end of the Permian season 250 million years ago, known as the Great Death, which caused more than two-thirds of marine life to disappear.
After the investigation is most likely the tropical oceans are losing the most species due to climate change, although many of them move to higher latitudes and more favorable survival conditions.
Vice versa, polar species must become extinct because their habitat is completely lost.
In another article published alongside the quoted article, researchers Malin Pinsky and Alexa Fredston of Rutgers University in the state of New Jersey, stressed that “climate change is driving species away from the ends of the earth.”
But they pointed out that Reducing greenhouse gas emissions can reduce the risk of extinction by up to 70 percent.
In this way, they confirmed it preventing large-scale biodiversity loss and the sixth mass extinction is now a “global priority”.
“Whether humanity faces the worst-case scenario or the best-case scenario depends on societal decisions, not only on climate change, but also on the destruction of ‘habitats’, overfishing and coastal pollution,” they warned.
In this way, “with a coordinated focus that addresses multiple threats, living in the ocean as we know it has a better chance of surviving in this century and beyond,” Pinsky and Fredston argued.