Nui Ong Nature Reserve
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Summary
- Yellow-cheeked gibbons (Nomascus gabriellae) are present in Nui Ong Nature Reserve.
- A minimum of three groups were estimated to inhabit the site in 2010.
- The population trend is unknown.
- The site has a total size of 255 km².
- Key threats to gibbons are hunting, illegal logging, fires and exploitation of non-timber forest products.
- Conservation activities include community-based patrolling and an awareness campaign.
Site characteristics
The nature reserve is located in Binh Thuan Province, Vietnam. The site supports the southernmost populations of N. gabriellae in Vietnam (Rawson et al. 2011).
Table 1. Basic site information for Nui Ong Nature Reserve
| Species | 'Nomascus gabriellae |
| Area | 255 km² |
| Coordinates | Lat: 11.059721 , Lon: 107.765615 |
| Type of site | Protected area (Nature Reserve) |
| Habitat types | Subtropical/tropical moist lowland forest |
| Type of governance |
IUCN habitat categories Site designations
Ape status
In 2009 and 2010, at least three groups of N. gabriellae were recorded (Hoang Minh Duc 2010 as cited by Rawson et al. 2011). The total N. gabriellae population is unknown- a survey is needed to update their status in the reserve.
Table 2. Ape population estimates reported for Nui Ong Nature Reserve
| Species | Year | Total number indiv. (95% CI) | Total number groups (95% CI) | Density [groups/km²] (95% CI) | Area | Method | Source | Comments | A.P.E.S. database ID | NA | NA |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nomascus gabriellae | 2009-2010 | 3 | entire site, 255 km² | Unknown | Rawson et al. 2011 | Minimum of three groups. |
Threats
The main threats to gibbons in the reserve are hunting, agricultural encroachment, illegal logging, exploitation of non-timber forest products and forest fires. The site is surrounded by six communes with over 40,000 people. Wildlife meat, including from primates, is sold at restaurants nearby (Rawson et al. 2011).
Table 3. Threats to apes reported for Nui Ong Nature Reserve
| Category | Specific threats | Threat level | Description | Year of threat |
|---|---|---|---|---|
| 10 Geological events | Absent | |||
| 12 Other threat | Absent | |||
| 2 Agriculture & aquaculture | 2.1 Annual & perennial non-timber crops | High (more than 70% of population affected) | Agricultural encroachment (Rawson et al. 2011). | Ongoing (2011) |
| 5 Biological resource use | 5.1 Hunting & collecting terrestrial animals | High (more than 70% of population affected) | Illegal hunting with guns (Rawson et al. 2011). | Ongoing (2011) |
| 5 Biological resource use | 5.2 Gathering terrestrial plants | High (more than 70% of population affected) | Exploitation of non-timber forest products (Rawson et al. 2011). | Ongoing (2011) |
| 5 Biological resource use | 5.3 Logging & wood harvesting | High (more than 70% of population affected) | Illegal logging (Rawson et al. 2011). | Ongoing (2011) |
| 7 Natural system modifications | 7.1 Fire & fire suppression | High (more than 70% of population affected) | Forest fires (Rawson et al. 2011). | Ongoing (2011) |
| 1 Residential & commercial development | Unknown | |||
| 3 Energy production & mining | Unknown | |||
| 4 Transportation & service corridors | Unknown | |||
| 6 Human intrusions & disturbance | Unknown | |||
| 8 Invasive & other problematic species, genes & diseases | Unknown | |||
| 9 Pollution | Unknown | |||
| 11 Climate change & severe weather | Unknown |
Conservation activities
A small project to strengthen management capacity and a community awareness campaign was conducted in the reserve in 2008. Since 2008, nine community-based patrol teams have operated to prevent forest fire, encroachment, illegal logging and hunting (Rawson et al. 2011).
Table 4. Conservation activities reported for Nui Ong Nature Reserve
| Category | Specific activity | Description | Implementing organization(s) | Year of activity |
|---|---|---|---|---|
| 2 Counter-wildlife crime | 2.12 Implement community control of patrolling, banning hunting and removing snares | Community-based patrol teams have operated to prevent forest fire, encroachment, illegal logging and hunting (Rawson et al. 2011). | Ongoing (2011) | |
| 4 Education & awareness | 4.1 Educate local communities about apes and sustainable use | Community awareness campaign (Rawson et al. 2011). | 2008 | |
| 5 Protection & restoration | 5.2 Legally protect ape habitat | Ongoing (2023) |
Conservation activities list (Junker et al. 2017)
Challenges
Table 5. Challenges reported for Nui Ong Nature Reserve
| Challenges | Specific challenges | Source | Year(s) |
|---|---|---|---|
| Not reported |
Enablers
Table 6. Enablers reported for Nui Ong Nature Reserve
| 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 Nui Ong Nature Reserve
| Behavior | Source |
|---|---|
| Not reported |
Exposure to climate change impacts
External links
Relevant datasets
References
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.
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