Idanre Forest Reserve

West Africa > Nigeria > Idanre Forest Reserve

Summary

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• Nigeria-Cameroon chimpanzees (Pan troglodytes ellioti) are present in Idanre Forest Reserve.
• The population size is unknown.
• The chimpanzee population trend is unknown.
• The site has a total size of 540 km².
• Key threats to chimpanzees are logging, hunting, and agricultural activities.
• Conservation activities are not documented.

Site characteristics

Idanre Forest Reserve is located in Ondo state. Only a patch of natural forest remains at the centre of the reserve, smaller than 50 km².

Table 1. Basic site information for Idanre Forest Reserve

Area	540 km²
Coordinates	6.857147, 5.105385
Designation	Forest Reserve
Habitat types	Plantations, subtropical/tropical heavily degraded forest, subtropical/tropical moist lowland forest

IUCN habitat categories Site designations

Ape status

Vocalisations and nests were documented in a 2006 survey (Greengrass 2006).

Table 2. Ape population estimates in Idanre 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			Present	Idanre Forest Reserve	Index survey (reconnaissance walk)	Greengrass 2006	Vocalisations and 3 nests recorded.

Threats

The eastern side of the forest reserve has been converted to teak plantations and farms. The presence of several camps on this side of the reserve indicates a high human population. Logging activity is very high and illegal hunter camps are found throughout the reserve (Greengrass 2006).

Table 3. Threats to apes in Idanre 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		Farms in the eastern side of the forest reserve (Greengrass 2006).	Ongoing (2006)
	2.2 Wood & pulp plantations	High		Land cleared for teak plantations (Greengrass 2006).	Ongoing (2006)
3. Energy production & mining		Unknown
4. Transportation & service corridors		Unknown
5. Biological resource use	5.1 Hunting & collecting terrestrial animals	High		Illegal huntings camps found scattered throughout the remaining forest (Greengrass 2006).	Ongoing (2006)
	5.3 Logging & wood harvesting	High		High logging pressure; chainsaws seen and heard frequently during a 2006 survey (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 Idanre 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 Idanre Forest Reserve

Challenge	Source
Not reported

Research activities

Documented behaviours

Table 6. Ape behaviors reported for Idanre 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: 03/03/2023