Wonga-Wongué

Central Africa > Gabon > Wonga-Wongué

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Summary

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• Central chimpanzees (Pan troglodytes troglodytes) & western lowland gorillas (Gorilla gorilla gorilla) are present in Wonga-Wongué.
• The population sizes are unknown.
• The great ape population trend is unknown.
• The site has a total size of 3,965.8 km².
• Key threats are not reported.
• Conservation activities are not reported.

Site characteristics

Wonga-Wongué is located in western Gabon, on the Atlantic coast. Habitats vary from mangrove wetlands and beaches to open grasslands and tropical forest (Mills et al. 2018). The site comprises a wildlife reserve and two hunting concessions (Ramsar 2016). In addition to chimpanzees and gorillas, other wildlife species found at the site include elephants, buffalos, hippos, and a wide diversity of waterbirds, predominantly Pelecanus onocrotalus (Ramsar 2016). The site was designated as a Ramsar Site for its international importance as a wetland in 1986.

Table 1. Basic site information for Wonga-Wongué

Species	'Pan troglodytes troglodytes, Gorilla gorilla gorilla
Area	3,965.816 km²
Coordinates	Lat: -0.541739 , Lon: 9.460716
Type of site	Protected area
Habitat types	Wetlands (lakes, rivers, streams, bogs, marshes), Subtropical/tropical moist lowland, Marine coastal/supratidal
Type of governance

IUCN habitat categories Site designations

Ape status

Table 2. Ape population estimates reported for Wonga-Wongué

Species	Year	Occurrence	Encounter or vistation rate (nests/km; ind/day)	Density estimate [ind./ km²] (95% CI)	Abundance estimate (95% CI)	Survey area	Sampling method	Analytical framework	Source	Comments	A.P.E.S. database ID
Pan troglodytes troglodytes & Gorilla gorilla gorilla							Unknown

Threats

Utilization of the land is forbidden in the area designated as presidential reserve; in the surrounding areas logging occurs, but this does not constitute a big threat yet (Ramsar 2016). Tourism also occurs in the surroundings, with the main activities consisting of wildlife viewing and beach recreation (Ramsar 2016). Human population density is relatively low (0.2 people km-2), and 59 villages are located within 10 km of the reserve’s southwest and southeast borders (Mills et al. 2018). The reserve seems to be well protected; e.g., no elephants were poached within the site from 2014 to 2016 (Mills et al. 2018).

Table 3. Threats to apes reported for Wonga-Wongué

Category	Specific threats	Threat level	Description	Year of threat
10 Geological events		Absent
12 Other threat		Absent
1 Residential & commercial development		Unknown
2 Agriculture & aquaculture		Unknown
3 Energy production & mining		Unknown
4 Transportation & service corridors		Unknown
5 Biological resource use		Unknown
6 Human intrusions & disturbance		Unknown
7 Natural system modifications		Unknown
8 Invasive & other problematic species, genes & diseases		Unknown
9 Pollution		Unknown
11 Climate change & severe weather		Unknown

IUCN Threats list

Conservation activities

Grassland covers 15% of the reserve (Mills et al. 2018). The Gabon Parks Agency (ANPN) prescribed burns are conducted annually during the long-dry season to maintain the grasslands, which would otherwise be overtaken by forest encroachment (Mills et al. 2018).

Challenges

Table 5. Challenges reported for Wonga-Wongué

Challenges	Specific challenges	Source	Year(s)
	Not reported

Enablers

Table 6. Enablers reported for Wonga-Wongué

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

Documented behaviours

Table 7. Behaviours documented for Wonga-Wongué

Behavior	Source
Not reported

External links

Ramsar

References

Mills, E. C., Poulsen, J. R., Fay, J. M., Morkel, P., Clark, C. J., Meier, A., ... & White, L. J. (2018). Forest elephant movement and habitat use in a tropical forest-grassland mosaic in Gabon. PloS one, 13(7), e0199387.

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