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Octopus Dna

All articles tagged with #octopus dna

environment2 years ago•3 min saved

"Antarctic Octopus DNA Uncovers Imminent Ice Sheet Collapse"

A study published in Science reveals that the DNA of Antarctic octopuses indicates an ice-free corridor during the Last Interglacial period, around 125,000 years ago, when global temperatures were similar to today. The findings suggest that the West Antarctic Ice Sheet (WAIS) is closer to collapse than previously thought, potentially leading to a long-term sea level rise of 3.3-5 meters. The study highlights the urgency of holding human-caused warming to the 1.5 degrees Celsius target of the Paris Agreement to prevent catastrophic consequences.

via Phys.org|

#antarctic #climate-change #environment

science2 years ago•4 min saved

"Octopus Genomics Unveil Antarctic Ice Sheet Collapse and Rising Sea Level Warnings"

A study of octopus DNA has provided evidence that the West Antarctic ice sheet collapsed more than 100,000 years ago during the Last Interglacial period, confirming a long-standing geological mystery. By analyzing the genetic history of the Turquet's octopus, researchers were able to trace past encounters and determine when different populations interbred. The findings suggest that the collapse of the ice sheet occurred during a time when global temperatures were similar to today's, providing valuable information about future sea level rise in a warming climate. The study highlights the potential of using DNA as a proxy to explore other poorly understood climate histories.

via CNN|

#climate-change #last-interglacial #octopus-dna

environment2 years ago•2 min saved

Octopus DNA Holds Grave Warning for Antarctica

A recent DNA analysis of two geographically separated populations of Turquet's octopus in West Antarctica suggests that around 125,000 years ago, the massive 2.2 million cubic kilometer West Antarctic ice sheet that separates the two bays had fully collapsed into the sea. Scientists who sequenced the genomes of octopus populations in both the Weddell and Ross Seas found evidence of ancestral gene flow between the two populations roughly 70,000 years ago, suggesting that "an ancient seaway was likely once opened across the West Antarctic Ice Sheet, which directly linked the present day Weddell Sea and Ross Sea". If it happened then, it could very well happen again, especially since global temperatures are reaching a similar threshold today.

via ScienceAlert|

#antarctica #climate-change #environment

environment2 years ago•2 min saved

Octopus DNA Holds Grave Warning for Antarctica

A recent DNA analysis of two geographically separated populations of Turquet's octopus in West Antarctica suggests that around 125,000 years ago, the massive 2.2 million cubic kilometer West Antarctic ice sheet that separates the two bays had fully collapsed into the sea. Scientists found evidence of ancestral gene flow between the two populations roughly 70,000 years ago, suggesting that "an ancient seaway was likely once opened across the West Antarctic Ice Sheet, which directly linked the present day Weddell Sea and Ross Sea". If it happened then, it could very well happen again, especially since global temperatures are reaching a similar threshold today. If the entire West Antarctic ice sheet collapses from human-induced global warming, forming an archipelago in the southern ocean, the resulting environmental catastrophe is hard to fathom.

via msnNOW|

#antarctica #climate-change #environment