The Conservation Status of Gibbons in Vietnam - Gibbon Research ...

Nomascus gabriellae8.3.4 Chu Yang Sin National ParkLocation: Lak and Krong Bong Districts, Dak Lak ProvinceArea: 58,947 hectaresStatus criteria: 1a, 2c, 3c, 4c, 5cDate of most recent survey: 2009Date of most recent confirmed record: 2009Minimum population: ≥ 8 groupsStatusIn 2010, eight groups of N. gabriellae were recorded in a small area of 2,500 ha within the park(BirdLife International 2010), providing the first recent evidence the species persists here. Thesedata suggest the park may support a significant population of N. gabriellae.Threats and Conservation ActionsInfrastructure development, logging and hunting are key threats to wildlife in this park (BirdLifeInternational 2010). A recent influx of Mong ethnic communities has led to an increase in gunownership and hunting around the park (BirdLife International 2010). There are no records ofgibbons hunted or traded from this site, although N. gabriellae is a target species for hunters withguns (Le Trong Trai et al. 2008). From 2006-2009, the park was the focus of a GEF project tostrengthen management, which included wildlife surveys and capacity building of localmanagement agencies. Further support is required for activities which would also assist N.gabriellae conservation, including park expansion and improved management capacity and lawenforcement (BirdLife International 2010). Gibbon population surveys are needed to furtherdetermine the value of the site for gibbon conservation.8.3.5 Bi Dup-Nui Ba National ParkLocation: Lac Duong and Dam Rong Districts, Lam Dong ProvinceArea: 63,938 hectaresStatus criteria: 1a, 2c, 3c, 4c, 5cDate of most recent survey: 2010Date of most recent confirmed record: 2010Minimum population: ≥ 25 groupsStatusRecent biodiversity surveys in this site reported that at least 25 gibbon groups occur (Mahood etal. 2009; Luu Hong Truong & Le Khac Quyet 2010). The presence of N. gabriellae was listed for thepark in 2002, although no details were provided (Institute of Ecology and Biological Resources2003; Nguyen Truong Son et al. 2005). The size of the gibbon population in the park is unclear andmay be relatively large due to expansive areas of potential habitat.Threats and Conservation ActionsHunting with guns and automatic rifles, agricultural encroachment, illegal logging, exploitation ofnon-timber forest products, economic development and forest fire are key threats to biodiversityin this park (Bidoup - Nui Ba National Park 2010) and threaten N. gabriellae and its habitats. In2010, four live gibbons were confiscated from a company in Di Linh District, which were thought86