Shasha Forest Reserve

West Africa > Nigeria > Shasha Forest Reserve

Summary

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• Nigeria-Cameroon chimpanzees (Pan troglodytes ellioti) might be present in Shasha Forest Reserve.
• The population size is unknown.
• The chimpanzee population trend is decreasing.
• The site has a total size of 90 km².
• Key threats to chimpanzees are logging
• Conservation activities are not documented.
• Part of the reserve was de-gazetted for oil palm plantations and cocoa farms.

Site characteristics

Shasha Forest Reserve is located in the state of Osun, Nigeria. The site is contiguous with Omo Forest to the south. Originally 120 km2, 30 km2 in the northern portion of the reserve were de-gazetted for oil palm plantations and cocoa farms (Greengrass 2006).

Table 1. Basic site information for Shasha Forest Reserve

Area	90 km²
Coordinates	7.088701, 4.418837
Designation	Forest Reserve
Habitat types	Plantations, subtropical/tropical heavily degraded forest

IUCN habitat categories Site designations

Ape status

A 2006 survey did not find any direct or indirect evidence of chimpanzees occurring in the site. Chimpanzees have not been directly observed in several years, and due to increasing logging and habitat disturbance, the population is likely to be decreasing or already extinct (Greengrass 2006).

Table 2. Ape population estimates in Shasha Forest Reserve

Species	Year	Abundance estimate (95% CI)	Density estimate [ind./ km²] (95% CI)	Encounter rate (nests/km)	Area	Method	Source	Comments	A.P.E.S. database ID
Pan troglodytes ellioti	2006			0	Shasha Forest Reserve	Index survey (reconnaissance walk)	Greengrass 2006

Threats

The main threat to wildlife in the reserve is illegal, uncontrolled logging (Greengrass 2006).

Table 3. Threats to apes in Shasha Forest 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	30 sq km	Part of the reserve was de-gazetted and converted into oil palm plantations and cocoa farms (Greengrass 2006).	Ongoing (2006)
3. Energy production & mining		Unknown
4. Transportation & service corridors		Unknown
5. Biological resource use	5.3 Logging & wood harvesting	High		Habitat loss due to illegal logging (Greengrass 2006).	Ongoing (2006)
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

Table 4. Conservation activities in Shasha Forest 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	Not reported
12. Species Management	Not reported
13. Livelihood; Economic & Other Incentives	Not reported

Conservation activities list (Junker et al. 2017)

Challenges

Table 5. Challenges reported for Shasha Forest Reserve

Challenge	Source
Not reported

Research activities

Documented behaviours

Table 6. Ape behaviors reported for Shasha Forest Reserve

Behavior	Source
Not reported

References

Greengrass, E.J. (2006). A survey of chimpanzees in south-west Nigeria. Report to the NCF-WCS Biodiversity Research Programme.

Page completed by: A.P.E.S. Wiki team Date: 07/03/2023