Summary

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Western chimpanzees (Pan troglodytes verus) are present in the SOBG logging concession.
The population size is unknown.
The population trend is unknown.
This site has a total area of 16.14 km².
The main threats to chimpanzees are hunting and the creation of plantations.

Site characteristics

Four forest relics unsuitable for rubber and oil palm cultivation are scattered throughout the SOGB agro-industrial plantations. Among these forest relics, the study by Bohoussou et al. 2018 reported the presence of chimpanzees (Pan troglodytes verus) in the largest of the relics, covering an area of 1,450 hectares. Other animals with special status are also scattered throughout these plots. The village forests of coastal south-west Côte d'Ivoire show that there are still a few chimpanzee individuals scattered in refuge forests that are difficult for humans to penetrate and unsuitable for agriculture (Bohoussou et al. 2018, Soiret et al. 2019).

Table 1. Basic site information for SOGB concession

Species	Pan troglodytes verus
Area	16.14 km²
Coordinates	Lat: 4.708474 , Lon: -7.124997
Type of site	Agro-industrial plantation
Habitat types	Subtropical/tropical moist lowland forest, Subtropical/tropical heavily degraded former forest, Agricultural land
Type of governance	Private governance

Types of sites Governance types Habitat types

Ape status

Table 2. Ape population estimates reported for SOGB concession

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 verus	2018		0.12			SOGB concession (14.5 km²)	Line transects		Bohoussou et al. 2018

Sampling methods Analytical frameworks

Threats

In the southwest coastal forests, the high concentration of human populations near the sites increases threats such as hunting and the creation of plantations. There is also the removal of firewood and timber. All of these actions could lead to the disappearance of these village forests, which represent a major conservation priority, if nothing is done (Soiret pers. obs. 2023).

Table 3. Threats to apes reported for SOGB concession

Category	Specific threats	Threat level	Description	Year of threat
2 Agriculture & aquaculture	2.1 Annual & perennial non-timber crops	High (more than 70% of population affected)	Cocoa, coconut and palm plantations (Bohoussou et al. 2018).	Ongoing (2018)
5 Biological resource use	5.1 Hunting & collecting terrestrial animals	Present (unknown severity)	Soiret pers. obs. 2022	Ongoing (2022)
5 Biological resource use	5.3 Logging & wood harvesting	Present (unknown severity)	Soiret pers. obs. 2022	Ongoing (2022)

Threats

Conservation activities

Challenges

Enablers

Research activities

Documented behaviours

Exposure to climate change impacts

External links

References

Bohoussou, K. H., Akpatou, K. B., Kouassi, Y. W. R., & Kpangui, K. B. (2018). Diversité des Mammifères et valeur pour la conservation des reliques forestières au sein d’une concession agro-industrielle au sud-ouest de la Côte d’Ivoire. VertigO - la revue électronique en sciences de l'environnement, 18(1). https://doi.org/10.4000/vertigo.19947
Soiret, S. P. K., Kouakou, C. Y., Koffi, B. J.-C., Kadjo, B., Kouassi, P., Gomez, P. J., Goodwin, R. M., & Koné, I. (2019). The diversity and conservation of mammals in the Dodo Coastal Forest in southwestern Côte d’Ivoire, western Africa: A preliminary study. Journal of Threatened Taxa, 11(6), 13654–13666. https://doi.org/10.11609/jott.4641.11.6.13654-13666

Page created by: Serge Soiret Date: 2023-01-30