Huong Son Forest
Asia > Vietnam > Huong Son Forest
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Summary
- Northern white-cheeked gibbons (Nomascus leucogenys) are present in Huong Son Forest.
- It has been estimated that a minimum of 3 groups occur in the site.
- The gibbon population trend is unknown.
- The site has a total size of 300 km².
- Key threats to gibbons are hunting and logging.
- Conservation activities are not documented.
Site characteristics
The site is located in north-central Vietnam, in the province of Ha Tinh. Part of the site is managed by the Huong Son State Forest Company, and the other part is designated as the ‘Ngan Pho River Protection Forest’ (Rawson et al. 2011).
Table 1. Basic site information for Huong Son Forest
| Species | Nomascus leucogenys |
| Area | 300 km² |
| Coordinates | Lat: 18.522052 , Lon: 105.244000 |
| Type of site | Logging concession |
| Habitat types | Agricultural land, Subtropical/tropical moist lowland forest |
| Type of governance |
Types of sites Governance types Habitat types
Ape status
A 2011 survey confirmed at least three gibbon groups in Son Kim 2 Commune and one group in Song Hon Commune, and according to interviews, a few groups are found in the border area with Laos. In the late 1990s and early 2000s gibbons were recorded on several occasions (Rawson et al. 2011).
Table 2. Ape population estimates reported for Huong Son Forest
| Species | Year | Total number groups (95% CI) | Density [groups/km²] (95% CI) | Total number indiv. (95% CI) | Area | Method | Source | Comments | A.P.E.S. database ID |
|---|---|---|---|---|---|---|---|---|---|
| Nomascus leucogenys | 2011 | 3 | Huong Son Forest | Unknown | Nguyen Manh Ha et al. 2011 |
Sampling methods Analytical frameworks
Threats
In 2010, Hương Sơn had 74.6kha of natural forest, extending over 76% of its land area. In 2021, it lost 679ha of natural forest, equivalent to 352kt of CO₂ emissions (Global Forest Watch).
Table 3. Threats to apes reported for Huong Son Forest
| Category | Specific threats | Threat level | Description | Year of threat |
|---|---|---|---|---|
| 5 Biological resource use | 5.1 Hunting & collecting terrestrial animals | High (more than 70% of population affected) | Hunting and capturing. | Ongoing (2011) |
| 5 Biological resource use | 5.3 Logging & wood harvesting | High (more than 70% of population affected) | Extensive commercial logging and illegal logging (Rawson et al. 2011). | Ongoing (2011) |
Conservation activities
Challenges
Table 5. Challenges reported for Huong Son Forest
| Challenges | Specific challenges | Source | Year(s) |
|---|---|---|---|
| Not reported |
Enablers
Table 6. Enablers reported for Huong Son Forest
| Enablers | Specific enablers | Source | Year(s) |
|---|---|---|---|
| 1 Site management | |||
| 2 Resources and capacity | |||
| 3 Engaged community | |||
| 4 Institutional support | |||
| 5 Ecological context | |||
| 6 Safety and stability |
Research activities
Documented behaviours
Table 7. Behaviours documented for Huong Son Forest
| Category | Behavior | Observation type | Prevalence | Observation dates | Source | Habituation | Species | Comment |
|---|---|---|---|---|---|---|---|---|
| Not reported |
Exposure to climate change impacts
External links
References
Nguyen Manh Ha, Do Tuoc, and Le Van Dung (2011). [Survey of white-cheeked gibbons (Nomascus leucogenys) in Vu Quang National Park and Huong Son Forestry Company, Ha Tinh]. Centre for Natural Resources and Environmental Studies (CRES), Hanoi, Vietnam (in Vietnamese).
Rawson, B. M, Insua-Cao, P., Nguyen Manh Ha, Van Ngoc Thinh, Hoang Minh Duc, Mahood, S., Geissmann, T. and Roos, C. (2011). The Conservation Status of Gibbons in Vietnam. Fauna & Flora International/Conservation International, Hanoi, Vietnam.
Page created by: APES Atlas Team Date: 2023-05-05