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Thu Apr 9, 2020, 08:11 AM

Nature - We May Now Expect Collapses Of Entire Ecosystems Beginning This Decade

Global warming is about to tear big holes into Earth's delicate web of life, pushing temperatures beyond the tolerance of thousands of animals at the same time. As some key species go extinct, entire ecosystems like coral reefs and forests will crumble, and some will collapse abruptly, starting as soon as this decade, a new study in the journal Nature warns.

Many scientists see recent climate-related mass die-offs, including the coral bleaching of the Great Barrier Reef and widespread seabird and marine mammal mortality in the Northeastern Pacific linked to a marine heat wave, as warning signs of impending biodiversity collapse, said lead author Alex Pigot, a biodiversity researcher at University College, London. The new study shows that nowhere on Earth will escape the impacts.

"In the U.S., the southern states from Texas to Florida, the Appalachians and the West Coast are projected to be at particularly high risk, with between 20 and 40 percent of species facing conditions beyond anything they have previously experienced," Pigot said.

"I hope our predictions are wrong. But increasingly, what we're observing around us are the signs of this happening," Pigot said, referring to research showing how global warming affects individual species. "I think these studies are showing that many species are already living very near their thermal limits. Our results suggest that these losses are likely to involve multiple species near simultaneously rather than happening gradually, one species at a time," he said. At the current rate of warming, abrupt exposure events in tropical oceans will begin before 2030 and spread to tropical forests and higher latitudes by 2050. The risks decrease and arrive more slowly if global warming is capped at less than 3.6 degrees Fahrenheit, as per the goals of the 2015 Paris climate agreement, the study concluded.

EDIT

https://insideclimatenews.org/news/07042020/global-warming-ecosystem-biodiversity-rising-heat-species

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Reply Nature - We May Now Expect Collapses Of Entire Ecosystems Beginning This Decade (Original post)
hatrack Apr 2020 OP
Bayard Apr 2020 #1
Canoe52 Apr 2020 #2

Response to hatrack (Original post)

Thu Apr 9, 2020, 10:15 AM

1. Humans

Humans have handled their responsibility to the planet about as well as tRump has handled the pandemic.

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Response to Bayard (Reply #1)

Fri Apr 10, 2020, 10:56 AM

2. Oh, you mean "perfectly"?

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