the Hainan gibbon based on best estimates of current and anticipated future conditions. 1. A major concern is that of the approximately 20 individuals left, only 4 are adult females and one of these may be post-reproductive. The reasons for this decline are largely due to developing rubber and commercial logging industries, the construction of roads, the human population boom (between 1950 and 2003), and a subsequent increase in human settlements are collectively contributed to wiping out the Hainan gibbon’s original lowland … Introduction. Home; U.K. ... (IUCN). Since research began on the Hainan gibbon—one of several gibbon species in China, all listed as Endangered or Critically Endangered by the International Union for Conservation of Nature (IUCN)—the scientists who have come to the island to study and help protect the species have relied on that store of local ecological knowledge to answer basic … The Hainan gibbon (Nomascus hainanus), once widespread across Hainan, China, is now found only in the Bawangling National Nature Reserve. The IUCN SSC Primate Specialist Group Section on Small Apes and the International Collaboration to Conserve Gibbons and Siamang have joined forces with The Hainan Institute of National Parks and Eco Foundation Global to establish the Global Gibbon Network Initiative. The Hainan gibbon (Nomascus hainanus) has been listed as one of the world’s 25 most endangered primates since 2000, and has by far the lowest population size of any ape species (Mittermeier et al., 2007).Formerly considered conspecific with Hylobates (Nomascus) concolor (e.g. This community of experts works to save gibbons and related species. The Hainan Gibbon is an ape only found on the forested Chinese island of the same name and in the 1970s the worldwide population was less than ten. The Hainan Gibbon is showing encouraging signs of recovery, thanks to the relentless efforts of local conservation organisations. In this study, we integrated data based on field … The Hainan gibbon is the oldest surviving gibbon in the world, as well as a species unique to China. Ma et al., 1988) or Nomascus nasutus (e.g. That discovery brought the total known number of Hainan gibbons all the way up to 28. A recent paper shows how gibbons use a man-made canopy 'bridge' to travel between forest fragments. And it is a first-class nationally protected wildlife. Habitat loss and fragmentation are the primary drivers of Hainan gibbon population decline. That’s why the International Union for Conservation of Nature (IUCN), of which IPPL is a long-time member, has declared 2015 the International Year of the Gibbon. She also serves as vice chair of the IUCN Primates Section on Small Apes. Hainan gibbon couple by Reiner Gogolin on flickr. Based in Oxford, England, Cheyne studies primates. Mootnick, 2006) and … With a remaining population size of 33 individuals, it is the world’s rarest primate. The Hainan gibbons’ adoption of the bridge suggests that other primates may also use rope bridges in fragmented forests, says Susan Cheyne. Sensitivity testing was used to identify those aspects of the population that most affected population viability. Model results suggest that the Hainan gibbon is likely to be at high risk of extinction in the long term. Read the full article on IUCN Read the full article on IUCN The IUCN currently lists Hainan black-crested gibbons as critically endangered. Some have suggested that they are the rarest mammals in the world, with approximately 20 individuals counted in a recent survey. According to the IUCN, the population of Hainan gibbons dropped from more than 2,000 in the late 1950s and to fewer than 60 in 1993 due to habitat loss and hunting. Currently, there is only one wild population of the Hainan gibbon, with 30 individuals living in the rainforest of Hainan Island.

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