The missing gold bar represents a major threat of climate change

Photographs on types of gold bars that have been exposed to global warming

Photographs on types of gold bars that have been exposed to global warming.

Those lucky enough to see them will never forget.

For only a few days each year, Costa Rica’s elfin forest survives with a multitude of golden rods the length of a child’s finger, emerging from the forest to mate in the ponds. the rain.

In this mysterious forest, clouds covered the mountain ridges and “the trees were small and the wind cut, twisted and covered with mosses,” said J Alan Pounds, a scientist. at the Monteverde Cloud Forest Preserve in Costa Rica.

“The land is very dark so the golden poles stand out like statues of animals. It’s a sight to behold.”

Then in 1990, they passed.

The golden toad was the first to be identified as climate change as a major cause of extinction.

It may be just the beginning.

For years, researchers have said the world is facing an air and biodiversity crisis. They say they are related.

One in 10 finished eyes

Even if the global warming target of 1.5 degrees Celsius is kept above the industry’s first levels, the UN’s Intergovernmental Panel on Climate Change says about one in 10 global species is facing a threat. wrap up.

The golden toad is found only in the highlands of Monteverde. So, when things went awry, the system came to an end.

“It’s very clear that about 99 percent of the population has declined in a year,” said Pounds, whose research into the disappearance of the golden toad was reported in a February IPCC report on measuring the effects of climate change.

It was impossible to change the climate on research radar when Pounds first arrived in Costa Rica in the early 1980s to study amphibians.

But global warming has already begun to take its toll.

After the disappearance of the golden toad, the Monteverde harlequin frog and others, the researchers compared data on temperature and climate with those in local conditions. .

They get not only the signature of the El Nino weather phenomenon, but also the factors associated with climate changes.

The ‘trigger’ climate

Death occurs after warm and dry seasons.

Pounds and his colleagues have worked to reduce the incidence of chytridiomycosis, but he believes the disease is a “bullet – the climate change that is pulling the cause.

“We felt that climate change and serious consequences were putting the dice on these types of atrocities,” Pounds told AFP.

It is not an isolated event.

The proliferation of the chytrid fungus around the world, as well as climate change “is associated with the extinction of tropical amphibians,” according to the IPCC.

Fingers of global warming are known to be missing.

The Bramble Cay melomys, a small mouse that lives on a low island in the Torres River, was last seen in 2009.

It is the only mammal endemic to the Great Barrier Reef, whose numbers have been destroyed by rising sea levels, rising droughts and severe storms – all of which have been devastated by climate change. .

The plants that contributed to his diet fell from 11 plant species in 1998 to only two in 2014. It is said to be extinct.

Today, climate change is listed as a direct threat to 11,475 species evaluated by the International Union for Conservation of Nature. About 5,775 were at risk of death.

Africa’s only nesting penguin was re -listed as a disaster last year after it became extinct.

The only nesting penguin in Africa was re -listed as a disaster last year after it became extinct.

#MeToo for all sorts

The main reason why climate change is considered a threat in many ways is that its consequences are so obvious, said Wendy Foden, head of the technology team. IUCN.

But there is a growing awareness of the consequences.

Beyond the best of times, warming can move things, change the way or predict how to have a son or a daughter.

And it’s on top of other human threats such as poaching, deforestation, large -scale fishing and pollution.

In 2019, a report by UN biodiversity experts estimated that one million species could be lost in the coming years, raising fears that the world is entering a sixth the end.

“It’s horrible,” Foden said, adding to the frustrating words of the demise of depleted biodiversity.

“We need a #MeToo movement for trends, a pathway to what we’re doing.”

About 200 countries are currently engaged in global warming to try to prevent the phenomenon, with a significant proportion of 30 percent of the earth’s surface protected by 2030.

But Foden said the threat of climate change was more of a response than traditional conservation.

“It’s impossible to do it again, even in the remote wilderness, the climate will change,” Foden said.

In some cases, people have to choose what to keep.

Take the African penguin to disaster in South Africa, which Foden wrote for the IPCC report on the effects of climate change.

Forced to lie down in the open after humans have dug their guano nests, adults must swim now to look for fish, perhaps because of the association of fishing. size and climate change. Meanwhile, chickens in open nests can die from heat stress.

“We’re going down to the last 7,000 relatives. Right now, every penguin is counted,” Foden said.

Forest or forest

In Monteverde, the clouds have changed.

Although rainfall has increased slightly in the last 50 years, Pounds says it has changed a lot.

In the 1970s, the forest saw about 25 dry days a year on average – in the last ten years it has equaled 115.

The dew that soaked the forest during the dry season was reduced by about 70 percent.

Pounds said visitors sometimes stop by and ask for directions to Cloud Forest.

“And I said: ‘You’re in,'” he said.

“It’s more often like a dirt forest than a cloud forest.”

Researchers also found that frogs, snakes and lizards were declining and that the number of birds was changing. Some have disappeared from pleasant places, and some have disappeared from that place.

For the golden toad, last year, the team from the Monteverde Conservation League, supported by conservation group Re: wild, embarked on a journey to find the golden toad in its historic site in the eternal forest of children, after the news of the discovery.

In vain, however.

Today, Pounds and his teammates continue to watch the golden toad in the rainy season.

“We never gave up,” he said.

“But with each passing year, they will never be seen again.”


On land and at sea, climate change will not be harmed: UN


© 2022 AFP

Directions: The lost gold coin reveals the biggest threat of climate change (2022, April 13) retrieved on 13 April 2022 from https://phys.org/news/2022-04-lost-golden-toad -heralds-climate.html

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