Population and Conservation of Black-Crested Gibbons (Hylobates concolor jingdongensis) in Wuliang Nature Reserve,Jingdong,Yunnan

Population estimates of black-crested gibbons in Wuliang Nature Reserve,Jingdong,Yunnan,China,with two techniques,average group density-total area and average home rang-forest coverage,produced quite similar results.The population was estimated around 115 groups in the Reserve.The paper also discussed the conservation problems of the Reserve.At present,the main threat to the gibbons is habitat fragmentation and population isolation.Thus,it is urgent to prohibit hunting and protect the habitat and forest corridors or habitat bridges.