Octopus DNA reveals ancient sea level rise, helps future climate predictions

This multinational study, published in the journal Science, is a collaboration of researchers from universities and research institutes in Australia, New Zealand, Finland, Portugal, Ireland, Germany and the United Kingdom.

The research is based on previous genetic study, which developed a more efficient population genomics approach. This method was used to test various hypotheses about the connections between octopus populations in Antarctica.

"Continued genetic similarities between the present-day Turquet octopus populations in the Weddell Sea, Ross Sea and Amundsen Sea are only possible with the disappearance of the WAIS. The breakup of the ice sheet opened a seaway connecting these otherwise distant regions," explains. Professor Phillip Watts from the University of Jyväskylä.

This study provides answers to the long-standing debate about whether the WAIS collapsed during the last ice age.

"The research is significant in predicting the effects of climate change. During the last ice age, the earth's average surface temperature was about 1.5 degrees Celsius warmer than pre-industrial times, and sea levels were about 5-10 meters higher than today, Watts states. "Since the WAIS is currently a major contributor to Antarctic sea level rise, its complete collapse could raise sea levels by about 3-5 meters."

This research, partially funded by the Academy of Finland, not only sheds light on historical climate events, but also provides critical information for predicting the future effects of climate change, especially for understanding the potential rise of global sea levels.

HT


https://nord.news/2023/12/22/octopus-dna-reveals-ancient-sea-level-rise-helps-future-climate-predictions/?feed_id=61186

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