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Emperor penguin at serious danger of extinction as a result of local weather change


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Emperor penguin at serious danger of extinction resulting from local weather change
2022-05-08 18:54:19
#Emperor #penguin #danger #extinction #due #climate #change

The emperor penguin is at severe threat of extinction within the next 30 to 40 years because of local weather change, in accordance with research by the Argentine Antarctic Institute (IAA).

Key points:Penguin chicks succumb to freezing or drowning when exposed to the ocean before they grow their waterproof plumageIf nothing adjustments, many colonies will disappear within the subsequent 30 to 40 yearsTourist and fishing exercise also harms the penguins, disrupting the food cycle

The emperor, the world's largest penguin and one in all solely two penguin species endemic to Antarctica, gives birth during the Antarctic winter and requires strong sea ice from April by to December to nest fledgling chicks.

If the sea freezes later or melts prematurely, the emperor family can't full its reproductive cycle.

"If the water reaches the new child penguins, which are not able to swim and should not have waterproof plumage, they die of the chilly and drown," mentioned biologist Marcela Libertelli, who has studied 15,000 penguins across two colonies in Antarctica at the IAA.

This has occurred at the Halley Bay colony in the Weddell Sea, the second-largest Emperor penguin colony, where for 3 years all of the chicks died.

Every August, in the midst of the southern hemisphere winter, Dr Libertelli and other scientists at Argentina's Marambio Base in Antarctica journey 65 km each day by motorcycle in temperatures as low as -40 levels Celsius to achieve the closest Emperor penguin colony.

Once there, they rely, weigh, and measure the chicks, collect geographical coordinates, and take blood samples. They also conduct aerial evaluation.

Each August, researchers from Argentina's Antarctic Institute travel to Halley Bay to study the colony's chicks.(British Antarctic Survey: Peter Fretwell)

The scientists' findings point to a grim future for the species if climate change isn't mitigated.

"[Climate] projections recommend that the colonies that are situated between latitudes 60 and 70 degrees [south] will disappear in the subsequent few decades; that is, within the next 30, 40 years," Dr Libertelli said.

The emperor's distinctive features embody the longest reproductive cycle among penguins.

After a chick is born, one guardian continues carrying it between its legs for warmth until it develops its remaining plumage.

"The disappearance of any species is a tragedy for the planet. Whether small or giant, plant or animal — it doesn't matter. It's a loss for biodiversity," Dr Libertelli said.

The emperor penguin's disappearance may have a dramatic influence all through Antarctica, an excessive atmosphere where meals chains have fewer members and fewer links, Dr Libertelli said.

In early April, the World Meteorological Organization warned of "more and more excessive temperatures coupled with unusual rainfall and ice melting in Antarctica" — a "worrying trend", said Dr Libertelli, with Antarctic ice sheets depleting since a minimum of 1999.

The rise of tourism and fishing in Antarctica have also put the emperor's future at risk by affecting krill, one of many most important sources of meals for penguins and other species.

"Tourist boats often have numerous unfavourable results on Antarctica, as do the fisheries," Dr Libertelli mentioned.

"It can be crucial that there is greater control and that we think about the longer term."

Reuters


Quelle: www.abc.web.au

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