The most comprehensive study of Borneo’s orangutans estimates their numbers have plummeted by more than 100,000 since 1999, as the palm oil and paper industries shrink their jungle habitat and fatal conflicts with people increase.
The finding, which is to be published in the journal Current Biology, is in line with the International Union for Conservation of Nature’s (IUCN) 2016 designation of Borneo’s orangutans as critically endangered.
Researchers from the Max Planck Institute for Evolutionary Anthropology and other institutions said the original population of the gentle ginger-haired great apes is larger than previously estimated but so is the rate of decline.
Photo: AP
The most dramatic declines were found in areas where tropical forests were cut down and converted to plantations for palm oil, which is used in a vast array of consumer products, and for timber.
However, significant population declines occurred in selectively logged forests.
“In these forest areas human pressures, such as conflict killing, poaching and the collection of baby orangutans for the pet trade have probably been the major drivers of decline,” the authors of the study said.
Earlier this month, an orangutan on the Indonesian part of Borneo island died after being shot at least 130 times with an air gun, stabbed and clubbed, the second known killing of an orangutan in the Indonesian part of Borneo this year.
Erik Meijaard, a conservationist involved in the study, said current estimates of the orangutan population on Borneo range from 75,000 to 100,000.
He said the estimates vary because of uncertainty about how many animals are living in alien habitats such as plantations and burned forests.
According to the IUCN, their numbers could drop to 47,000 by 2025 from their 2016 population estimate of about 105,000.
The real decline could be worse, because the prediction is based only on habitat loss, and does not include killings.
Sumatra’s orangutan, a separate species, is even more endangered, with a population estimated at about 12,000 animals.
In a positive twist, the new study found Bornean orangutans are more resilient and adaptable than thought.
They walk on the ground more often than previously known and can feed on plants that have not been part of their natural diet.
The authors said this may allow them to survive in smaller forests and in landscapes where the forest is fragmented.
“I expected to see a fairly steep decline, but I did not anticipate it would be this large,” said Ssaid Serge Wich of Liverpool John Moores University, one of the researchers. “When we did the analyses, we ran them again and again to figure out if we had made a mistake somewhere. You think the numbers can’t be that high, but unfortunately they are.”
“The one thing they cannot cope with, however, is the high killing rates seen currently,” he said.
“Orangutans are a very slow breeding species,” he said in a statement. “If only one in 100 adult orangutans is removed from a population per year, this population has a high likeliness to go extinct.”
Additional reporting by The Guardian
POLITICAL PRISONERS VS DEPORTEES: Venezuela’s prosecutor’s office slammed the call by El Salvador’s leader, accusing him of crimes against humanity Salvadoran President Nayib Bukele on Sunday proposed carrying out a prisoner swap with Venezuela, suggesting he would exchange Venezuelan deportees from the US his government has kept imprisoned for what he called “political prisoners” in Venezuela. In a post on X, directed at Venezuelan President Nicolas Maduro, Bukele listed off a number of family members of high-level opposition figures in Venezuela, journalists and activists detained during the South American government’s electoral crackdown last year. “The only reason they are imprisoned is for having opposed you and your electoral fraud,” he wrote to Maduro. “However, I want to propose a humanitarian agreement that
ECONOMIC WORRIES: The ruling PAP faces voters amid concerns that the city-state faces the possibility of a recession and job losses amid Washington’s tariffs Singapore yesterday finalized contestants for its general election on Saturday next week, with the ruling People’s Action Party (PAP) fielding 32 new candidates in the biggest refresh of the party that has ruled the city-state since independence in 1965. The move follows a pledge by Singaporean Prime Minister Lawrence Wong (黃循財), who took office last year and assumed the PAP leadership, to “bring in new blood, new ideas and new energy” to steer the country of 6 million people. His latest shake-up beats that of predecessors Lee Hsien Loong (李顯龍) and Goh Chok Tong (吳作棟), who replaced 24 and 11 politicians respectively
Young women standing idly around a park in Tokyo’s west suggest that a giant statue of Godzilla is not the only attraction for a record number of foreign tourists. Their faces lit by the cold glow of their phones, the women lining Okubo Park are evidence that sex tourism has developed as a dark flipside to the bustling Kabukicho nightlife district. Increasing numbers of foreign men are flocking to the area after seeing videos on social media. One of the women said that the area near Kabukicho, where Godzilla rumbles and belches smoke atop a cinema, has become a “real
‘WATER WARFARE’: A Pakistani official called India’s suspension of a 65-year-old treaty on the sharing of waters from the Indus River ‘a cowardly, illegal move’ Pakistan yesterday canceled visas for Indian nationals, closed its airspace for all Indian-owned or operated airlines, and suspended all trade with India, including to and from any third country. The retaliatory measures follow India’s decision to suspend visas for Pakistani nationals in the aftermath of a deadly attack by shooters in Kashmir that killed 26 people, mostly tourists. The rare attack on civilians shocked and outraged India and prompted calls for action against their country’s archenemy, Pakistan. New Delhi did not publicly produce evidence connecting the attack to its neighbor, but said it had “cross-border” links to Pakistan. Pakistan denied any connection to
RSS