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[[Asia]] > [[Vietnam]] > [[Chu Yang Sin National Park]]

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__TOC__
= Summary =

<div style='float: right'>{{#display_map: height=190px | width=300px | scrollzoom=off | zoom=5 | layers=OpenStreetMap,OpenTopoMap|12.407906, 108.434924~[[Chu Yang Sin National Park]]~''Nomascus gabriellae''}}</div>
* Southern Yellow-cheeked Gibbons (''Nomascus gabriellae'') are present in Chu Yang Sin National Park.
* It has been estimated that a minimum of 8 groups occur in the site.
* The gibbon population trend is unknown.
* The site has a total size of 669 km².
* Key threats to gibbons are hunting and logging.
* Conservation activities have focused on improving the management of the site, e.g., improvement of law enforcement.

= Site characteristics =

The site is located in southern Vietnam; it was initially designated as a nature reserve in 1986, and designated as a national park in 2002 ([[#R00394|BirdLife International 2023]], [https://www.protectedplanet.net/10380 WDPA]). The park encompasses a range of high mountains in the northern part of Da Lat plateau. Endemic bird species have been recorded at the site, the most important of which, from a conservation perspective, are Grey-crowned ''Crocias Crocias langbianis'' and ''Garrulax yersini'', which are classified as globally endangered. The site was designated an Important Bird Area in 2002 ([[#R00394|BirdLife International 2023]]).

'''Table 1. Basic site information for Chu Yang Sin National Park'''
{| border="1" cellpadding="5" cellspacing="0" class="Site_characteristics-table"
|Species
|''Nomascus gabriellae''
|-
|Area
|669 km²
|-
|Coordinates
|Lat: 12.407906 , Lon: 108.434924
|-
|Type of site
|Protected area (National Park)
|-
|Habitat types
|Subtropical/tropical moist lowland forest, Subtropical/tropical moist montane forest
|-
|Type of governance
|
|}

[[Types of sites]] [[Governance types]] [[Habitat types]]
= Ape status =

In 2010, eight groups of southern yellow-cheeked gibbons were recorded in an area of 2,500 ha within the park, documenting the first recent evidence of their presence ([[#R00395|Rawson et al. 2011]]).

'''Table 2. Ape population estimates reported for Chu Yang Sin National Park'''
{| border="1" cellpadding="5" cellspacing="0" class="Ape_status-table"
!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 gabriellae''
|2010
|
|8
|
|25 km²
|Unknown
|[[#R00395|Rawson et al. 2011]]
|
|
|}

[[Sampling methods]] [[Analytical frameworks]]
= Threats =

Infrastructure development, logging and hunting are key threats to wildlife in this park ([[#R00395|Rawson et al. 2011]]).

'''Table 3. Threats to apes reported for Chu Yang Sin National Park'''
{| border="1" cellpadding="5" cellspacing="0" class="Threats-table"
!Category
!Specific threats
!Threat level
!Description
!Year of threat
|-
|5 Biological resource use
|5.1 Hunting & collecting terrestrial animals
|Present (unknown severity)
|An influx of Mong ethnic communities has led to an increase in gun ownership and hunting around the park, however, there are no records of gibbons hunted or traded from this site, although southern yellow-cheeked gibbons are a target species for hunters with guns ([[#R00395|Rawson et al. 2011]]).
|Ongoing (2011)
|}

[[Threats]]
= Conservation activities =

A GEF project was implemented from 2006-2009 to strengthen management, including wildlife surveys and capacity building of local management agencies. Further support is required for activities which would also assist the conservation of southern yellow-cheeked gibbons, including park expansion and improved management capacity and law enforcement. Gibbon population surveys are needed to further determine the value of the site for gibbon conservation ([[#R00395|Rawson et al. 2011]]).

= Challenges =

'''Table 5. Challenges reported for Chu Yang Sin National Park'''
{| border="1" cellpadding="5" cellspacing="0" class="Challenges-table"
!Challenges
!Specific challenges
!Source
!Year(s)
|-
|
|Not reported
|
|
|}

[[Challenges]]
= Enablers =

'''Table 6. Enablers reported for Chu Yang Sin National Park'''
{| border="1" cellpadding="5" cellspacing="0" class="enabler-table"
!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
|
|
|
|}

[[Enablers]]
= Research activities =

= Documented behaviours =

'''Table 7. Behaviours documented for Chu Yang Sin National Park'''
{| border="1" cellpadding="5" cellspacing="0" class="behaviours-table"
!Category
!Behavior
!Observation type
!Prevalence
!Observation dates
!Source
!Habituation
!Species
!Comment
|-
|
|Not reported
|
|
|
|
|
|
|
|}

[[Behaviours]]
= Exposure to climate change impacts =

= External links =

= References =

<span id="R00394"></span>BirdLife International. (2023). Important Bird Areas factsheet: Chu Yang Sin. Downloaded from http://www.birdlife.org on February 13, 2023.

<span id="R00395"></span>Rawson, B. M., Insua-Cao, P., Nguyen, M. H., Van, N. T., Hoang, M. D., Mahood, S., …, & Roos, C. (2011). The Conservation Status of Gibbons in Vietnam. Hanoi, Viet Nam: Fauna & Flora International (FFI) and Conservation International. [http://www.gibbons.de/main/books/2011gibbons-vietnam.pdf link]

'''Page created by: '''APES Atlas Team''' Date:''' 2023-02-10

Chu Yang Sin National Park - Revision history