“Generally neglected” species face twice as many extinction threats, warns study.IUCN Red List of Threatened Species

Plants and animals that we don’t have enough data to properly rate appear to be twice as threatened with extinction as they are rated. This could mean that more species could be wiped off the planet than previously thought, studies warn.

The researchers looked at the extinction risk of species assessed by the Convention on Biological Diversity. red list We found that 56% of endangered species are at risk of extinction.

Species are considered DD when there is not enough data on their distribution or abundance, and these species are “generally ignored” in studies analyzing impacts on biodiversity, the researchers wrote. . Paper published in Communications BiologyCreated by the International Union for Conservation of Nature (IUCN), the Red List is used by governments to prioritize conservation efforts.

IUCN assesses over 140,000 species based on criteria such as abundance, trends and threat.There are 20,000 DD species on the Red List and policy makers often refer to them as least concernedbut this study showed that a much higher proportion of these species are threatened. said to be exposed.

Species may be DD because they are very few in number or sightings are rare or so. seed of mystery, making it difficult to estimate their population. In order to overcome these problems, researchers need to apply what they know to important factors such as the global distribution of those species, climate conditions, land-use change, pesticide use, and invasive threats. Based on this, we created an algorithm to predict the likelihood of a species being endangered. Race. The researchers ran the algorithm when the geographic distribution of DD species was known, which was about 38% of DD species.

Very likely endangered DD species include the Sierra Miahuatlan spike-sam frog, which has a 95% chance of being endangered; the Sholai night frog; It included fish.

Woman Fulcifer Timoni, a chameleon species found in Madagascar. This region is one of the three regions with the highest number of data-deficient species at risk. Photo: Jorn Kohler/WWF/PA

Previous studies have explored the extinction risk of DD species, which is the most extensive surveying 21 taxonomic groups and remains a ‘small fraction of what exists in the world’. said Jan Borgelt, principal investigator at the University of Norway. of Science and Technology (NTNU).

Mr Bogert said: Including DD species, the algorithm predicted that 33% of Red List species would be threatened with extinction and 28% would be threatened.

Central Africa, South Asia and Madagascar are the regions with the highest number of endangered DD species, but researchers have not investigated why this is the case. Half of the coastal DD marine species are threatened with extinction.

Professor Jane Hill of the University of York, who is also a trustee of the British Ecological Society and was not involved in the research, said: [machine learning methods] Applicable to more species. “

About 18,000 invertebrates are assessed as threatened by the Red List, 27% are DDInsects are extinct eight times faster than birds, mammals and reptiles, according to . Analysis published last yearthe known decline is likely to be the ‘tip of the iceberg’. 500x fundraising Invertebrates are perceived as having less “charisma”.

Mr Hill said: So while this study provides more information about his DD species, we still know very little about most species on Earth. “

Some of the threatened DD species

One example where the algorithm can be used is newly recognized rice whaleScientists thought it could be a species for almost a decade, though it took years to get formal recognition. Currently, Deepwater He only has about 50 units left in the Horizon oil spill-affected area. The area has heavy boat traffic and oil and gas drilling. Dr Chris Parsons, a marine researcher at the University of Exeter, believes the DD category should be considered an ‘endangered species’, so there is no local outcry because no one knows of its existence. he said: “If immediate precautions had been taken when they first suspected the new species many years ago, it would have compelled the study to be carried out immediately and might have prevented it from becoming endangered. We could have initiated action.”

A beaked whale in the waters off the west coast of Mexico. Data on Baird's beaked whales are so sparse that it is not possible to assess how endangered they really are.
A beaked whale off the west coast of Mexico. Data on Baird’s beaked whales are so sparse that it is not possible to assess how endangered they really are. Photo: Simon Ager/Sea Shepherd/Reuters

of 23 beaked whale Seven of the Red List species are DD. They spend a lot of time underwater (dives he can last up to three hours) and are difficult to spot in the wild, but many have been affected by man-made ocean noise pollution that can cause mass strandings. are at risk from the threat of Data on beaked whales is so poor that algorithms were unable to assess how endangered they were.

Humpback whale in the Indo-Pacific Long considered DD in Southeast Asia, there was little funding and little interest in research. They are now considered a “nearly endangered species” and are the official mascots of Hong Kong. listed We support international conservation efforts under the U.S. Endangered Species Act.

find more Click here for information on the era of extinctionfollow the biodiversity reporter Phoebe Weston When Patrick Greenfield Follow us on Twitter for all the latest news and features

“Generally neglected” species face twice as many extinction threats, warns study.IUCN Red List of Threatened Species

Source link “Generally neglected” species face twice as many extinction threats, warns study.IUCN Red List of Threatened Species

Back to top button