Ise Forest Reserve

West Africa > Nigeria > Ise Forest Reserve

Summary

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• Nigeria-Cameroon chimpanzees (Pan troglodytes ellioti) are present in Ise Forest Reserve.
• The population size is unknown; in 2006 at least 5 individuals occurred in the reserve.
• The chimpanzee population trend is decreasing.
• The site has a total size of 62 km².
• Key threats to chimpanzees are logging and hunting.
• Conservation activities are not documented.

Site characteristics

Ise Forest Reserve is a small reserve in Ekiti State, Nigeria.

Table 1. Basic site information for Ise Forest Reserve

Area	62 km²
Coordinates
Designation	Forest Reserve
Habitat types	Subtropical/tropical heavily degraded forest

IUCN habitat categories Site designations

Ape status

In 2006, the eastern side of the reserve, composed of regenerated forest, was surveyed. Chimpanzees were regularly heard and sighted. Reports of sightings of 4-6 individuals and the presence of two nesting sites with 5 nests each, suggests that at least 5 individuals inhabit the area; it is probable that the site could support 10 or more individuals (Greengrass 2006). However, the population trend is decreasing due to high hunting pressure and habitat degradation caused by logging activities (Greengrass 2006).

Table 2. Ape population estimates in Ise 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	Ise Forest Reserve, eastern side	Index survey (reconnaissance walk)	Greengrass 2006	2 nesting sites observed, with 5 nests each.

Threats

High hunting and logging pressure are the main threats to chimpanzees in the reserve. Relative to nearby protected areas, Ise forest reserve has been less impacted by logging and agriculture. However, these threats are increasing, putting wildlife and chimpanzees in the reserve at greater risk (Greengrass 2006).

Table 3. Threats to apes in Ise Forest Reserve

Category	Specific threats	Threat level	Quantified severity	Description	Year of threat
1. Residential & commercial development		Unknown
2. Agriculture & aquaculture		Unknown
3. Energy production & mining		Unknown
4. Transportation & service corridors		Unknown
5. Biological resource use	5.1 Hunting & collecting terrestrial animals	High		High hunting pressure; for instance, in 2005 a chimpanzee mother was killed and her baby captured (Greengrass 2006).	Ongoing (2006)
	5.3 Logging & wood harvesting	High		Logging pressure is intense and increasing (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 Ise 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 Ise Forest Reserve

Challenge	Source
Not reported

Research activities

Documented behaviours

Table 6. Ape behaviors reported for Ise 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