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Javan rhinos, the vaquita porpoise, hairy-nosed wombats and “Asian unicorns” – how long until these rare animal species exist only as legends of nature past?
The planet is on a fast track to losing more than 6,800 primates, animals, birds, amphibians, insects and plants all included on the “critically endangered” Red List, compiled by the International Union for Conservation of Nature (IUCN). Another two critically endangered species were highlighted last week by the World Wildlife Fund (WWF) in a report that found that two-thirds of the world’s vertebrates have disappeared over the past five decades.
Most critically endangered species – those at the highest risk of extinction – likely won’t survive the next few years. “And every time a species is lost, a small piece of the world is lost,” says Stuart Butchart, chief scientist at BirdLife International.
There may be fewer than 18 of the small, shy vaquita porpoise still living in Gulf of California waters. Accidental victims of gillnets cast by Mexican fishers, this might be the most endangered of all marine mammals. “It is likely to go extinct very soon, despite all the efforts being made to save it,” says Craig Hilton-Taylor, chief scientist in charge of the IUCN’s Red List. One more major catch by fishers, and this porpoise could be gone forever. Saving it requires greater efforts to improve the livelihoods of these fishers – but that might not happen in time.
Javan rhinoceroses have been reduced to about 68 living in Indonesia after being made extinct in most of Asia, from Bangladesh to Myanmar to Vietnam. Like most Red List species, these rhinos have been subject to mass habitat destruction due in no small part to road construction, which brings more people into their forests to clear trees for farm and plantation expansion, particularly for oil palm.
The saola is a small antelope-like creature nicknamed the “Asian unicorn” because of its rarity, likely numbering no more than 25. Its “secretive behavior” makes estimates difficult, and cameras set up by researchers have captured its image just five times. The Saola faces “enormous” hunting pressures in the Lao People’s Democratic Republic and Vietnam. “Where there are high rates of poverty, animals such as the Saola are snared for food,” says Hilton-Taylor.
Australia’s northern hairy-nosed wombat, also known as the yaminon, is also teetering on the edge of extinction due to the marsupial’s shrinking habitat, as well as the presence of non-native and highly flammable grasses that contribute to deadly fires. Increasing numbers of predators, including cats and dogs, are also a problem.
Predators and habitat destruction are responsible for the dwindling population of the pocket-sized Gilbert’s potoroo, which numbers less than 50. Like a miniature hybrid of a rat and a kangaroo, it’s Australia’s most endangered marsupial and one of the world’s rarest critically endangered mammals.
As few as 50 of the minuscule critically endangered species the Jico deer mouse (not pictured) are thought to still exist in Mexico along the Gulf of Mexico coast.
Additionally, the WWF has highlighted concerns for the:
The fate of these threatened species offers a powerful barometer of what is happening to our planet’s biodiversity, but it’s essential to collect more information on a greater range of species for a more precise picture, says Hilton-Taylor.
“When these creatures disappear, they will take with them not only important pieces of natural history but also significant pieces of the planet’s biodiversity puzzle that makes sense only when it is unified.”
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