Sentences with phrase «orangutan populations»

Over the last 50 years, orangutan populations have been in dramatic decline due to external factors like habitat fragmentation and poaching — but a new study reveals the startling pervasiveness of their threat from humans.

(01/16/2010) The Malaysian palm oil industry has been broadly accused of contributing to the dramatic decline in orangutan populations in Sabah, a state in northern Borneo, over the past 30 years.

Orangutan populations have plummeted over the past century, a result of hunting, habitat loss, the pet trade, and human - ape conflict.

Erik Meijaard, an ecologist who has worked in Indonesia since 1993 and is considered a world authority on orangutan populations, is cautiously optimistic, although he sees no «silver bullet» solutions.

It focuses on two pilot sites on the island of Sumatra, namely Tripa swamp and the mountain forests of Batang Toru, both hosting significant orangutan populations.

Palm oil plantations decimate orangutan populations and threaten other endangered species such as tigers, rhinoceros, and elephants indigenous to Malaysia and Indonesia, the two countries that produce 85 percent of the world's palm oil.

The survey, which was conducted by the Great Ape Trust and will be published this month in the journal Oryx, alarmed researchers because it showed that orangutan populations have plummeted in just the last few years.

The majority of red palm oil — the unrefined version higher in micronutrients — comes from sustainable palm farms that don't impact orangutan populations.

Finally, the team analysed 37 genomes from various orangutan populations.

Still, smaller orangutan populations in deforested areas of Borneo — due to logging or conversion to farm land — experienced the severest rates of decline, up to a 75 percent drop in one region.

Over those 16 years, Borneo's orangutan population declined by about 148,500 individuals.

By examining bits of DNA called microsatellites, which mutate rapidly, Goossens was able to trace individual genetic differences back to a common ancestor and estimate the size of the orangutan population at different times in the past.

To estimate changes in the size of the orangutan population over time, Voigt, along with Serge Wich from Liverpool John Moores University in the UK and their colleagues representing 38 international institutions, compiled field surveys conducted from 1999 to 2015.

Vogel says if the orangutan population is to increase, conservationists must know which habitats will enable these great apes to thrive and reproduce successfully.

Researchers have rigorously documented leaf adaptation in the cluster of five but have also observed the behavior in the wider orangutan population.

But by 2015 they only saw 10 nests per kilometre, so the team says the Bornean orangutan population fell from 300,000 to 150,000 over the 16 - year period (Current Biology, doi.org/gcx4p2).

New populations of orangutans found Conservationists have found a new population of orangutans in a mountainous corner of Indonesia, a discovery that raises the total number of the endangered orangutan population by possibly thousands.

We have evidence of one certified plantation that is still destroying the forest — we had to evacuate the orangutan population in the area because of this.

Not exact matches

For one thing, if (a) you had taken 225 million orangutans distributed roughly as the U.S. population is; if (b) 215 winners were left after 20 days; and if (c) you found that 40 came from a particular zoo in Omaha, you would be pretty sure you were onto something.

In 2017, The New York Times reported that the Bornean orangutan's population had declined by more than 80 percent in the last 75 years largely because of habitat loss.

They extrapolated the overall size of the island's population from the number of orangutan nests observed throughout the species» range in Borneo.

Scientists often spend days tracking rare animals such as snow leopards or orangutans for samples of DNA, for instance from hair or faeces, to understand their movements, monitor their populations and propose ways to protect them.

Yet these apes have long been overlooked in favor of Sumatran orangutans that live in swampy forests north of the Tapanuli population.

The research team compared these sounds against the largest available database of orangutan calls collected from over 12,000 hours of observations of more than 120 orangutans from 15 wild and captive populations.

The research team around Marzec had been following a population of Bornean orangutans (Pongo pygmaeus wurmbill) in the swamp forests of Indonesia's Mawas Reserve since 2003 and already collected over 26,000 hours of information on the adult females alone when they observed the fatal attack in July 2014.

«While we're learning that orangutans may be more behaviourally flexible than we thought and that some populations may frequently come to the ground to travel, they still need forests to survive,» said Dr. Spehar.

The natural forests of Borneo and Sumatra are falling fast due largely to the explosive growth of palm oil plantations; populations of the orangutan, found only in these forests, are in sharp decline.

Based on population numbers, Tapanuli orangutans may be the most endangered great apes, says Vincent Nijman at Oxford Brookes University, UK.

The so - called run - of - river design would not store much water behind a dam, but would require digging a long tunnel in an area that holds the densest population of orangutans.

«Cocktail» orangutans leave researchers shaken and stirred: Reintroduction of genetically distinct subspecies has led to hybridization in an endangered wild population.»

Extensive computer modelling aimed at reconstructing the population history of orangutans, revealed that the Batang Toru population appears to have been isolated from all other Sumatran populations for at least 10 - 20» 000 years, after which the low levels of influx of males from the northern populations had ceased.

Future studies, including data from larger sample sizes of wild - born and geographically well - defined individuals, and full Y - chromosome sequences from bonobos, gorillas and orangutans, promise to further our understanding of population histories, male - biased behaviours, mutation processes, and the functions of Y - chromosomal genes.

For one thing, if (a) you had taken 225 million orangutans distributed roughly as the U.S. population is; if (b) 215 winners were left after 20 days; and if (c) you found that 40 came from a particular zoo in Omaha, you would be pretty sure you were onto something.

Scientists estimate that if more than than one percent of female orangutans in a given population are killed in a year, that population will go extinct — a figure that doesn't bode well for the Kalimantan apes.

In contrast, RED would be more effective in terms of its conservation impact if payments were extended to all remaining carbon - rich tropical forests, including lowland peat swamp forests, the preferred habitat for dense populations of orangutans, and if the construction of new roads was halted.

A report on the threat posed to the last remaining populations of orangutans by illegal logging and the conversion of forest land to oil palm plantations..

The Sabangau rainforest is home to the world's largest populations of orangutans and Southern Bornean gibbons, but places like this are increasingly under threat across southeast Asia from conversion to oil palm, a crop that's used to produce biofuels for foreign markets like Europe.

Even for charismatic megafauna — like polar bears, tigers, and orangutans, our collective inability to respond swiftly and effectively to save populations depleted to thousands or just hundreds of individuals overshadows anything we are doing.»

The population of orangutans in Borneo is uncertain, but most scientists estimate there are fewer than 50,000 individuals.

According to park officials interviewed by COP, the population of morio orangutans (Pongo pygmaeus morio) declined from 600 in 2004 to 30 - 60 this year.

Conservationists from the NGO OuTrop surveyed the land, and recognised numerous important plant and animal species, such as the globally significant population of the endangered Bornean Orangutan and the critically endangered white - shouldered ibis.