Post by ranibilkis88888 on Feb 17, 2024 9:03:27 GMT 1
In the study, researchers from the British Antarctic Survey (BAS) said there was a high probability that none of the emperor penguin chicks from four out of five of the known colonies in the eastern and central parts of the Bellingshausen Sea had survived, they reported. the press. Scientists looked at satellite images showing the loss of sea ice at emperor penguin breeding sites long before the chicks had time to develop their waterproof feathers. “They still retain their soft plumage. If the ice breaks before they can safely enter the water, the plumage is flooded and the chicks basically die from exposure,” said Dr. Barbara Wienecke , a research scienti WhatsApp Number List st with the Australian Antarctic Division who has made many visits to the emperor penguin, penguin colonies, as reported by The Guardian. "It's horrendous and I find it extraordinarily distressing to think that this is happening." For penguins in their large colonies to breed, sea ice must be stable and firmly attached to the coast from April to January, according to the news release. Penguins lay their eggs during the Antarctic winter, from May to June, and the eggs hatch after 65 days. The chicks fledge during the summer, from December to January. Antarctic sea ice extent in early December 2022 equaled the previous record low from 2021. The eastern and central Bellingshausen Sea experienced the most extreme loss, 100 percent, in November 2022. “We have never seen emperor penguins not reproduce, on this scale, in a single season.
The loss of sea ice in this region during the Antarctic summer made it very unlikely that the displaced chicks would survive,” said the study's lead author, Dr. Peter Fretwell of BAS, in the press release. "We know that emperor penguins are very vulnerable in a warming climate, and current scientific evidence suggests that extreme sea ice loss events like this will become more frequent and widespread." Antarctica has experienced its four lowest years of sea ice extent in its 45-year satellite record since 2016. The two lowest years were 2021 to 2022 and 2022 to 2023. Thirty percent of the 62 penguin colonies identified Antarctic emperors were affected by the loss of sea ice from 2018 to 2022. In the past, emperor penguins responded to the loss of their sea ice habitat by moving to more stable locations the following year. However, according to scientists, this does not work when the entire region is affected; There's just nowhere they can go. The emperor penguin has never had to face threats such as large-scale hunting, overfishing or even habitat loss caused by humans. The only major threat considered to affect its population in the long term is climate change .
Recent predictions of emperor penguin demographic trends based on forecasts of sea ice loss have shown that if current rates of warming continue, more than 90 percent of their colonies will be nearly extinct by the end of the century. "Only by changing our behavior and the amounts of fossil fuels we use can we reverse the trajectory of these emperor penguins and many other species," Fretwell said, as reported by The Guardian. Satellite images from the European Commission's Copernicus Sentinel-2 mission were used to discover the five penguin colonies studied over the past 14 years, according to the press release. All colonies had returned to the same location each year to breed, and there had only been one previous case of reproductive failure, in 2010 on the Bryan Peninsula. “This paper dramatically reveals the connection between sea ice loss and ecosystem annihilation. Climate change is melting sea ice at an alarming rate. “It is likely to be absent from the Arctic in the 2030s, and in Antarctica the four lowest sea ice extents on record have been recorded since 2016,” said BAS sea ice physicist Dr Jeremy Wilkinson in the Press release. “It is another warning sign for humanity that we cannot continue down this path, politicians must act to minimize the impact of climate change. There is no time left".
The loss of sea ice in this region during the Antarctic summer made it very unlikely that the displaced chicks would survive,” said the study's lead author, Dr. Peter Fretwell of BAS, in the press release. "We know that emperor penguins are very vulnerable in a warming climate, and current scientific evidence suggests that extreme sea ice loss events like this will become more frequent and widespread." Antarctica has experienced its four lowest years of sea ice extent in its 45-year satellite record since 2016. The two lowest years were 2021 to 2022 and 2022 to 2023. Thirty percent of the 62 penguin colonies identified Antarctic emperors were affected by the loss of sea ice from 2018 to 2022. In the past, emperor penguins responded to the loss of their sea ice habitat by moving to more stable locations the following year. However, according to scientists, this does not work when the entire region is affected; There's just nowhere they can go. The emperor penguin has never had to face threats such as large-scale hunting, overfishing or even habitat loss caused by humans. The only major threat considered to affect its population in the long term is climate change .
Recent predictions of emperor penguin demographic trends based on forecasts of sea ice loss have shown that if current rates of warming continue, more than 90 percent of their colonies will be nearly extinct by the end of the century. "Only by changing our behavior and the amounts of fossil fuels we use can we reverse the trajectory of these emperor penguins and many other species," Fretwell said, as reported by The Guardian. Satellite images from the European Commission's Copernicus Sentinel-2 mission were used to discover the five penguin colonies studied over the past 14 years, according to the press release. All colonies had returned to the same location each year to breed, and there had only been one previous case of reproductive failure, in 2010 on the Bryan Peninsula. “This paper dramatically reveals the connection between sea ice loss and ecosystem annihilation. Climate change is melting sea ice at an alarming rate. “It is likely to be absent from the Arctic in the 2030s, and in Antarctica the four lowest sea ice extents on record have been recorded since 2016,” said BAS sea ice physicist Dr Jeremy Wilkinson in the Press release. “It is another warning sign for humanity that we cannot continue down this path, politicians must act to minimize the impact of climate change. There is no time left".