West Africa >Nigeria > Oni Forest Reserve

Summary

Loading map...

Nigeria-Cameroon chimpanzees (Pan troglodytes ellioti) are absent in Oni Forest Reserve
Chimpanzees have gone extinct at Oni Forest Reserve in the 90s.
The site has a total size of 56 km².
Key threats to chimpanzees are habitat destruction due to extensive farming.
Conservation activities are not documented.

Site characteristics

The site is located in the Ekiti state in Nigeria. Chimpanzees have not been observed in the reserve since 1993, and in its current condition it holds little value in terms of its natural biodiversity. Due to extensive farming, the site has in effect become unofficially de-gazetted (Greengrass 2006).

Table 1. Basic site information for Oni Forest Reserve

Area	56 km²
Coordinates	7.3513, 4.80381
Designation	Forest Reserve
Habitat types	Plantations, subtropical/tropical heavily degraded forest

IUCN habitat categories Site designations

Ape status

Chimpanzees have not been observed in the reserve, nor near the reserve, since 1993 (Greengrass 2003).

Table 2. Ape population estimates in Oni 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	Oni Forest Reserve	Index survey (reconnaissance walk)	Greengrass 2006

Threats

The main threats to chimpanzees and wildlife at the reserve include illegal and widespread farming in the 1990s and timber extraction that began in 1987 (Greengrass 2006).

Table 3. Threats to apes in Oni Forest Reserve

Category	Specific threats	Threat level	Description	Year of threat
1. Residential & commercial development		Unknown
2. Agriculture & aquaculture	2.1 Annual & perennial non-timber crops	High	Forest clearing for farmland throughout the reserve (Greengrass 2006).	Ongoing (2006)
3. Energy production & mining		Unknown
4. Transportation & service corridors		Unknown
5. Biological resource use	5.3 Logging & wood harvesting	High	Timber extraction that began in 1987 (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 Oni 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

Illegal clearing and farming occurred with the assistance of a corrupt police administrator who prevented the forestry department from acting against it. Violent attacks on forestry staff have also occurred on several occasions (Greengrass 2006).

Table 5. Challenges reported for Oni Forest Reserve

Challenge	Source
Corruption	Greengrass 2006
Violent attacks on forestry staff	Greengrass 2006

Research activities

Documented behaviours

Table 6. Ape behaviors reported for Oni Forest Reserve

Behavior	Source
Not reported

External links

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: 17/03/2023

Oni Forest Reserve

Contents