Difference between revisions of "Dong Nai Nature Reserve"

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   3) To make information comparable across wiki pages, keywords must be taken from the list of permitted words, or added to the list of permitted keywords. This is why we use official lists, e.g., IUCN classification lists, in our tables.
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[[Asia]] > [[Vietnam]] > [[Dong Nai Nature Reserve]]
  
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[[Region]] > [[Country]] > [[Site]]
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= Summary = <!-- An overview of the site, with one sentence for each section. May include a site map -->
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<div style="float: right">
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= Summary = <!-- An overview of the site, with a one sentence overview of each of the following sections. can include a site map -->
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{{#display_map: height=200px | width=300px | scrollzoom=off | zoom=5 | layers= OpenStreetMap, OpenTopoMap
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|11.405678, 107.232591~[[Dong Nai Nature Reserve]]~Yellow-cheeked gibbons
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* Ape taxa present  
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}}
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* Ape population size
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</div>
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* Ape population trend  
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* Yellow-cheeked gibbons (''Nomascus gabriellae'') are present in Dong Nai Nature Reserve.
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* This site has a total size of XX km².
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* A minimum of 17 groups were estimated to inhabit the site in 2010.
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* Key threats to apes are ...
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* The gibbon population trend is unknown.
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* Additional information
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* The site has a total size of 100,303 hectares (including 32,400 ha of Tri An Reservoir).
 +
* Key threats to gibbons are hunting, logging, roads and agricultural encroachment.
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* Conservation activities include a trial for establishing another gibbon population in the reserve.
  
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= Site characteristics = <!-- A paragraph summary of physical and geographic aspects of the site, and a table of key information -->
  
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= Site characteristics =
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Dong Nai Nature Reserve is located in the Dong Nai Province, Vietnam. Dong Nai Nature Reserve is one of the most important conservation areas in Vietnam as the site contains a high biodiversity richness. The landscape of the nature reserve is dominated by lowland semi evergreen forest, and the elevation ranges from 100 to 340 m above sea level. The reserve is one of the most important strategic watershed forests of the Dong Nai River and Tri An hydropower dam which provides drinking water for the second most populated and industrial area of Vietnam (Nguyen Manh Ha et al. 2010).
  
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'''Table 1. Basic site information for Dong Nai Nature Reserve'''
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This section includes a paragraph summary of physical and geographic aspects of the site, a brief history of the site and on animals and plants that are known to occur at the site.
 
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'''Table 1: Basic site information for XXXX'''
 
 
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{| border="1" cellpadding="5" cellspacing="0" class="basic-information"
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| Area             <!-- Please include units: km2/ha e.g 200ha   -->
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| Area <!-- Please include units: km2/ha e.g 200ha -->
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|100 km²
 
|-
 
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| Coordinates
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|Coordinates
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|11.405678, 107.232591
 
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| Designation     <!-- National Park, Nature Reserve, etc.  -->
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|Designation
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|Nature Reserve
 
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|-
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|Habitat types   <!-- List IUCN Habitat Classification 3.0 categories present (Without number), see link below -->
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|Habitat types <!-- List IUCN Habitat Classification 3.0 categories present (without number), see link below -->
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|Subtropical/tropical moist lowland forest
 
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[http://www.unitar.org/hiroshima/sites/unitar.org.hiroshima/files/Annex%201%20-%20IUCN%20Classification%20Schemes.pdf IUCN habitat categories]   [[Site designations]]
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[https://www.iucnredlist.org/resources/habitat-classification-scheme IUCN habitat categories] [[Site designations]]
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<br>
 
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= Ape status = <!-- a text overview of ape status (population sizes, trends etc), followed by a table of specific surveys and results -->
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= Ape status = <!--An overview of ape population status (population sizes, trends, etc.), followed by a table of specific surveys and results -->
  
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Surveys in 2010 recorded 15 groups of ''N. gabriellae'' with at least 31 individuals, including 13 males, 10 females and 8 juveniles, identified by their distinctive calls (Nguyen Manh Ha et al. 2010). In total, 69 survey days were spent surveying 34 listening posts and 34 transects. Gibbons have been extirpated in some parts of the reserve, probably due to intensive hunting and logging over the past few decades. Most gibbons persist in areas close to Cat Tien National Park, and this is probably due to better habitat and protection spill-over from the park (Nguyen Manh Ha et al. 2010).
  
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'''Table 2. Ape population estimates in Dong Nai Nature Reserve'''
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This section includes a brief summary of the survey history, the most recent abundance estimate, date of the estimate, and, if available, the population trend (if explicitely stated in a report/paper).
 
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'''Table 2: Ape population estimates in XXXX'''
 
 
{| border="1" cellpadding="5" cellspacing="0" class="population-estimate-table"
 
{| border="1" cellpadding="5" cellspacing="0" class="population-estimate-table"
 
! Species
 
! Species
 
! Year
 
! Year
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! Abundance estimate (95% confidence interval)
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! Total number indiv. (95% CI)
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! Density estimate (per km²)
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! Total number groups (95% CI)
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! Encounter rate (nests/km)
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! Density ​​[groups/km²​] (95% CI)
 
! Area
 
! Area
 
! Method
 
! Method
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! A.P.E.S. database ID
 
! A.P.E.S. database ID
 
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|-
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|''Nomascus gabriellae''
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|2010
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|31
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|15
 
|
 
|
−
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|Vinh An area, Ma Da sector, Hieu Liem sector of the reserve, approx. 200 km2
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|Fixed-point triangulation, Line transects (Distance), interview survey
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|Nguyen Manh Ha et al. 2010
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|Minimum of 17 groups and 31 individuals.
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= Threats =    <!-- a text overview of threats, followed by a table of key threats -->
 
= Threats =    <!-- a text overview of threats, followed by a table of key threats -->
  
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Hunting and logging are the key threats to ''N. gabriellae'' in this reserve; gibbons are still often sourced for the wildlife trade from this location, with an estimated minimum of five animals traded per year (Rawson et al. 2011). Forest quality is poor in areas previously logged. Several roads bisect the site and agricultural encroachment is occurring along these (Nguyen Manh Ha et al. 2010).
  
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This sections describes threats at the site, particularly those relevant for apes and thereby provides context for the threats listed in the table below.
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'''Table 3. Threats to apes in Dong Nai Nature Reserve'''
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'''Table 3: Threats to apes in XXXX'''
 
 
{| border="1" cellpadding="5" cellspacing="0" class="threats-table"
 
{| border="1" cellpadding="5" cellspacing="0" class="threats-table"
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!align="left"|Category <!-- Do not change threat categories -->
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!align="left"|Category <!-- PLEASE DO NOT CHANGE THE THREAT CATEGORIES -->
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!Specific threats   <!-- For specific threats, please use list of comma separated keywords from the list linked below -->
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!Specific threats <!-- For specific threats, please use list of comma separated keywords from the IUCN list linked below -->
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!Threat level       <!-- For threat level, please use keywords: unknown, low, high -->
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!Threat level <!-- For threat level, please use keywords: low, medium, high, present, absent, unknown-->
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!Quantified severity <!-- e.g., encounter rate, number of miners etc. (with reference)-->
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!Quantified severity <!-- Enter any available quantification of the threat, e.g., the proportion of the area affected by the threat, hunting sign encounter rates-->
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!Description         <!-- You can add descriptive information here -->
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!Year of threat     <!-- if ongoing or unknown add year of reference in brackets-->
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!Year of threat <!-- Enter specific year(s), “ongoing”, or “unknown”. If the threat is ongoing, please add the year of reference in parentheses -->
 
|-
 
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|1. Residential & commercial development
 
|1. Residential & commercial development
 
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|Unknown
 
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|2. Agriculture & aquaculture
 
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|2.1 Annual & perennial non-timber crops
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|High
 
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|Agricultural encroachment (Rawson et al. 2011).
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|Ongoing (2011)
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−
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|-
 
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|3. Energy production & mining
 
|3. Energy production & mining
 
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|Unknown
 
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|4. Transportation & service corridors
 
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|4.1 Roads & railroads
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|High
 
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|Several roads bisect the site, driving further habitat destruction  (Nguyen Manh Ha et al. 2010).
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|Ongoing (2010)
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|-
 
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|5. Biological resource use
 
|5. Biological resource use
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|5.1 Hunting & collecting terrestrial animals
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|High
 
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|
 +
|Illegal hunting with guns (Rawson et al. 2011).
 +
|Ongoing (2011)
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|-
 
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|5.3 Logging & wood harvesting
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|High
 
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−
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|Illegal logging (Rawson et al. 2011).
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|Ongoing (2011)
 
|-
 
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|6. Human intrusions & disturbance
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|6. Human intrusion & disturbance
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|Unknown
 
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|7. Natural system modifications
 
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|Unknown
 
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|8. Invasive & other problematic species, genes, diseases
 
|8. Invasive & other problematic species, genes, diseases
 
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|Unknown
 
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|10. Geological Events
 
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|Absent
 
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|-
 
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|11. Climate change & severe weather
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| 11. Climate change & severe weather
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|Unknown
 
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|12. Other options
 
|12. Other options
 
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|Absent
 
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[https://www.iucnredlist.org/resources/threat-classification-scheme IUCN Threats list]
 
[https://www.iucnredlist.org/resources/threat-classification-scheme IUCN Threats list]
  
 +
= Conservation activities =      <!-- A summary of the conservation activities, followed by a table of key activities -->
  
 +
In August 2011, two groups of gibbons were released into this reserve and monitored to assess whether more gibbons could be introduced here from the Dao Tien Rescue Centre with the aim of establishing another gibbon population (Rawson et al. 2011).
  
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= Conservation activities =      <!-- a text overview of conservation activities, followed by a table of key activities -->
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'''Table 4. Conservation activities in Dong Nai Nature Reserve'''
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−
 
 
−
This sections describes conservation interventions implemented at the site, including information on which organizations are implementing them and thereby provides context for the conservation activities listed in the table below.
 
−
 
 
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'''Table 4: Conservation activities in XXXX'''
 
 
{| border="1" cellpadding="5" cellspacing="0" class="conservation-actions-table"
 
{| border="1" cellpadding="5" cellspacing="0" class="conservation-actions-table"
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!align="left"|Category <!-- Do not change threat categories -->
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!align="left"|Category <!-- PLEASE DO NOT CHANGE THE CATEGORIES -->
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!Specific activity   <!-- For specific threats, please use list of comma separated keywords from the list linked below -->
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!Specific activity <!-- For specific threats, please use list from the list linked below, OR enter “Not reported” -->
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!Description         <!-- You can add descriptive information here -->
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!Description <!-- Add descriptive information -->
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!Year of activity         <!-- if ongoing or unknown add year of reference in brackets -->
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!Year of activity <!-- Add descriptive information -->
 
|-
 
|-
 
|1. Residential & commercial development
 
|1. Residential & commercial development
−
|
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|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|2. Agriculture & aquaculture
 
|2. Agriculture & aquaculture
−
|
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|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|3. Energy production & mining
 
|3. Energy production & mining
−
|
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|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|4. Transportation & service corridors
 
|4. Transportation & service corridors
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|5. Biological resource use
 
|5. Biological resource use
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
−
|6. Human intrusions & disturbance
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|6. Human intrusion & disturbance
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|7. Natural system modifications
 
|7. Natural system modifications
−
|
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|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|8. Invasive & other problematic species, genes, diseases
 
|8. Invasive & other problematic species, genes, diseases
−
|
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|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|9. Pollution
 
|9. Pollution
−
|
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|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|10. Education & Awareness  
 
|10. Education & Awareness  
−
|
+
|Not reported
 
|
 
|
 
|
 
|
 
|-
 
|-
 
|11. Habitat Protection
 
|11. Habitat Protection
 +
|11.2. Legally protect primate habitat
 
|
 
|
−
|
+
|Ongoing (2023)
−
|
 
 
|-
 
|-
 
|12. Species Management
 
|12. Species Management
−
|
+
|12.15. Reintroduce primates in groups
−
|
+
|Two gibbons groups introduced into the reserve (Rawson et al. 2011).
−
|
+
|2011
 
|-
 
|-
 
|13. Livelihood; Economic & Other Incentives  
 
|13. Livelihood; Economic & Other Incentives  
−
|
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|Not reported
 
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|
 
|
 
|
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[[Conservation activities list (Junker et al. 2017)]]
 
[[Conservation activities list (Junker et al. 2017)]]
  
 +
= Challenges = <!-- Overview of challenges in ape conservation -->
  
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+
'''Table 5. Challenges reported for Dong Nai Nature Reserve'''
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= Impediments = <!-- Overview of impediments to ape conservation -->
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{| border="1" cellpadding="5" cellspacing="0" class="challenges-table"
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!align="left"|Challenge <!-- Do not change categories -->
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!Source <!-- Source for challenge mentioned -->
−
Description of impediments that may hamper conservation activities.
 
−
 
 
−
 
 
−
'''Table 5: Impediments reported for XXXX'''
 
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{| border="1" cellpadding="5" cellspacing="0" class="impediments-table"
 
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!align="left"|Impediment  <!-- Do not change categories -->
 
−
!Source   <!-- source for impediment mentioned -->
 
 
|-
 
|-
−
|
+
|Not reported
 
|
 
|
 
|-
 
|-
 
|}
 
|}
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= Research activities = <!-- Overview of research activities -->
 
= Research activities = <!-- Overview of research activities -->
−
 
−
 
−
Short description of past and ongoing research activities at the site.
 
−
 
  
 
===Documented behaviours===  <!-- List of any behaviours observed at the site, including citations -->
 
===Documented behaviours===  <!-- List of any behaviours observed at the site, including citations -->
  
−
'''Table 6: Ape behaviors reported for XXXX'''
+
'''Table 6. Ape behaviors reported for Dong Nai Nature Reserve'''
 
{| border="1" cellpadding="5" cellspacing="0" class="behaviors-table"
 
{| border="1" cellpadding="5" cellspacing="0" class="behaviors-table"
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!align="left"|Behavior <!-- Do not change categories -->
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!align="left"|Behavior
−
!Source   <!-- source for behavior -->
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!Source
 
|-
 
|-
−
|
+
|Not reported
 
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|
 
|-
 
|-
 
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|}
  
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=External links=
−
===Relevant datasets===
 
−
[http://apesportal.eva.mpg.de/database/archiveMap A.P.E.S Portal]
 
−
 
 
−
<br>
 
−
 
 
  
 
= References =
 
= References =
−
 
+
Nguyen Manh Ha, Nguyen Hoang Hao, Tran Duc Dung, Nguyen Manh Diep, Pham Van Nong, Report of yellow-cheeked crested gibbon (Nomascus gabriellae) survey in Dong Nai Nature Reserve, Dong Nai province, Vietnam. Fauna & Flora International/Conservation International, Hanoi, Vietnam. <br>
 +
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. <br>
  
 
<br>
 
<br>
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'''Page completed by:'''XXXX '''   Date:''' DD/MM/YY  <br>
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'''Page completed by: '''A.P.E.S. Wiki team''' Date:''' 03/04/2023 <!-- If you don't want to add your name, you can add "A.P.E.S. Wiki team" -->
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−
<i>Please consider whether any information you would like to add is sensitive and could be misused to harm apes. Please do not add such information. If unsure, you can contact the Wiki manager (contact details on start page) for clarification.</i>
 
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<br><br>
 

Latest revision as of 05:15, 3 April 2023

Asia > Vietnam > Dong Nai Nature Reserve

Summary

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  • Yellow-cheeked gibbons (Nomascus gabriellae) are present in Dong Nai Nature Reserve.
  • A minimum of 17 groups were estimated to inhabit the site in 2010.
  • The gibbon population trend is unknown.
  • The site has a total size of 100,303 hectares (including 32,400 ha of Tri An Reservoir).
  • Key threats to gibbons are hunting, logging, roads and agricultural encroachment.
  • Conservation activities include a trial for establishing another gibbon population in the reserve.

Site characteristics

Dong Nai Nature Reserve is located in the Dong Nai Province, Vietnam. Dong Nai Nature Reserve is one of the most important conservation areas in Vietnam as the site contains a high biodiversity richness. The landscape of the nature reserve is dominated by lowland semi evergreen forest, and the elevation ranges from 100 to 340 m above sea level. The reserve is one of the most important strategic watershed forests of the Dong Nai River and Tri An hydropower dam which provides drinking water for the second most populated and industrial area of Vietnam (Nguyen Manh Ha et al. 2010).

Table 1. Basic site information for Dong Nai Nature Reserve

Area 100 km²
Coordinates 11.405678, 107.232591
Designation Nature Reserve
Habitat types Subtropical/tropical moist lowland forest

IUCN habitat categories Site designations

Ape status

Surveys in 2010 recorded 15 groups of N. gabriellae with at least 31 individuals, including 13 males, 10 females and 8 juveniles, identified by their distinctive calls (Nguyen Manh Ha et al. 2010). In total, 69 survey days were spent surveying 34 listening posts and 34 transects. Gibbons have been extirpated in some parts of the reserve, probably due to intensive hunting and logging over the past few decades. Most gibbons persist in areas close to Cat Tien National Park, and this is probably due to better habitat and protection spill-over from the park (Nguyen Manh Ha et al. 2010).

Table 2. Ape population estimates in Dong Nai 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
Nomascus gabriellae 2010 31 15 Vinh An area, Ma Da sector, Hieu Liem sector of the reserve, approx. 200 km2 Fixed-point triangulation, Line transects (Distance), interview survey Nguyen Manh Ha et al. 2010 Minimum of 17 groups and 31 individuals.

Threats

Hunting and logging are the key threats to N. gabriellae in this reserve; gibbons are still often sourced for the wildlife trade from this location, with an estimated minimum of five animals traded per year (Rawson et al. 2011). Forest quality is poor in areas previously logged. Several roads bisect the site and agricultural encroachment is occurring along these (Nguyen Manh Ha et al. 2010).

Table 3. Threats to apes in Dong Nai Nature Reserve

Category Specific threats Threat level Quantified severity Description Year of threat
1. Residential & commercial development Unknown
2. Agriculture & aquaculture 2.1 Annual & perennial non-timber crops High Agricultural encroachment (Rawson et al. 2011). Ongoing (2011)
3. Energy production & mining Unknown
4. Transportation & service corridors 4.1 Roads & railroads High Several roads bisect the site, driving further habitat destruction (Nguyen Manh Ha et al. 2010). Ongoing (2010)
5. Biological resource use 5.1 Hunting & collecting terrestrial animals High Illegal hunting with guns (Rawson et al. 2011). Ongoing (2011)
5.3 Logging & wood harvesting High Illegal logging (Rawson et al. 2011). Ongoing (2011)
6. Human intrusion & disturbance Unknown
7. Natural system modifications Unknown
8. Invasive & other problematic species, genes, diseases Unknown
9. Pollution Unknown
10. Geological Events Absent
11. Climate change & severe weather Unknown
12. Other options Absent

IUCN Threats list

Conservation activities

In August 2011, two groups of gibbons were released into this reserve and monitored to assess whether more gibbons could be introduced here from the Dao Tien Rescue Centre with the aim of establishing another gibbon population (Rawson et al. 2011).

Table 4. Conservation activities in Dong Nai Nature Reserve

Category Specific activity Description Year of activity
1. Residential & commercial development Not reported
2. Agriculture & aquaculture Not reported
3. Energy production & mining Not reported
4. Transportation & service corridors Not reported
5. Biological resource use Not reported
6. Human intrusion & disturbance Not reported
7. Natural system modifications Not reported
8. Invasive & other problematic species, genes, diseases Not reported
9. Pollution Not reported
10. Education & Awareness Not reported
11. Habitat Protection 11.2. Legally protect primate habitat Ongoing (2023)
12. Species Management 12.15. Reintroduce primates in groups Two gibbons groups introduced into the reserve (Rawson et al. 2011). 2011
13. Livelihood; Economic & Other Incentives Not reported

Conservation activities list (Junker et al. 2017)

Challenges

Table 5. Challenges reported for Dong Nai Nature Reserve

Challenge Source
Not reported

Research activities

Documented behaviours

Table 6. Ape behaviors reported for Dong Nai Nature Reserve

Behavior Source
Not reported

External links

References

Nguyen Manh Ha, Nguyen Hoang Hao, Tran Duc Dung, Nguyen Manh Diep, Pham Van Nong, Report of yellow-cheeked crested gibbon (Nomascus gabriellae) survey in Dong Nai Nature Reserve, Dong Nai province, Vietnam. Fauna & Flora International/Conservation International, Hanoi, Vietnam.
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 completed by: A.P.E.S. Wiki team Date: 03/04/2023

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