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Study: World’s Wildlife More at Risk Than Realized

时间:2022-08-29 08:53:22

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New research published last week in the publication Communications Biology suggests the world's wildlife may be in more trouble than scientists have so far reported.

Scientists have examined the status of more than 147,000 plants and animals. But there are thousands of species1 that scientists still do not know enough about to judge their health and safety. As a result, those species have not been included in the listing of threatened or endangered species. The International Union for the Conservation of Nature (IUCN) updates that list each year.

Among those underexamined species is the orca whale, the fairy armadillo of Argentina, and 200 bat species around the world.

In some cases, the lack of data itself is a warning sign. It suggests the species may be hard to find because its population has decreased, said a team of international scientists. They used data on environmental conditions and human threats to map the possibility of species death among those they examined.

Then, the team looked at the 7,699 underexamined species. They estimated that about 56 percent were facing conditions that likely put the species at risk of dying out, or extinction2, said the study.

The IUCN lists about 28 percent of species around the world as "threatened."

There are millions more plant and animal species that the IUCN has never looked at. Scientists estimate 1 million of them are threatened with extinction, said a 2019 report by the U.N.'s Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem3 Services.

Jan Borgelt is a writer of the report and an ecologist at the Norwegian University of Science and Technology. He said of the endangered and threatened "data deficient4" plants and animals, many are species that live in small areas far from human population centers. He added many are in central Africa, Madagascar, and southern Asia.

The state of nature "could be worse than we realize if these predictions are true," he said.

The study said the worst off are likely an underexamined kind of animal called amphibians5, with 85 percent estimated to be threatened.

Governments often aim to protect species named by the IUCN as threatened or endangered.

Pamela Gonzalez del Pliego is an ecologist at the University of évora in Portugal who was not involved in the research. She said, studies such as this "highlight where conservation resources should be allocated7."

Words in This Story

status – n. the current state of someone or something

species – n. a group of animals or plants that are similar and can produce young animals or plants

deficient – adj. not having enough of something that is important or necessary

allocate6 – v. to divide and give out (something) for a special reason or to particular people or companies


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1 species FTizN     
n.物种,种群
参考例句:
  • Are we the only thinking species in the whole of creation?我们是万物中惟一有思想的物种吗?
  • This species of bird now exists only in Africa.这种鸟现在只存在于非洲。
2 extinction sPwzP     
n.熄灭,消亡,消灭,灭绝,绝种
参考例句:
  • The plant is now in danger of extinction.这种植物现在有绝种的危险。
  • The island's way of life is doomed to extinction.这个岛上的生活方式注定要消失。
3 ecosystem Wq4xz     
n.生态系统
参考例句:
  • This destroyed the ecosystem of the island.这样破坏了岛上的生态系统。
  • We all have an interest in maintaining the integrity of the ecosystem.维持生态系统的完整是我们共同的利益。
4 deficient Cmszv     
adj.不足的,不充份的,有缺陷的
参考例句:
  • The crops are suffering from deficient rain.庄稼因雨量不足而遭受损害。
  • I always have been deficient in selfconfidence and decision.我向来缺乏自信和果断。
5 amphibians c4a317a734a700eb6f767bdc511c1588     
两栖动物( amphibian的名词复数 ); 水陆两用车; 水旱两生植物; 水陆两用飞行器
参考例句:
  • The skin of amphibians is permeable to water. 两栖动物的皮肤是透水的。
  • Two amphibians ferry them out over the sands. 两辆水陆两用车把他们渡过沙滩。
6 allocate ILnys     
vt.分配,分派;把…拨给;把…划归
参考例句:
  • You must allocate the money carefully.你们必须谨慎地分配钱。
  • They will allocate fund for housing.他们将拨出经费建房。
7 allocated 01868918c8cec5bc8773e98ae11a0f54     
adj. 分配的 动词allocate的过去式和过去分词
参考例句:
  • The Ford Foundation allocated millions of dollars for cancer research. 福特基金会拨款数百万美元用于癌症研究。
  • More funds will now be allocated to charitable organizations. 现在会拨更多的资金给慈善组织。

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