Ise Forest Reserve

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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

Species	'Pan troglodytes ellioti
Area	62 km²
Coordinates	Lat: 7.393197 , Lon: 5.382600
Type of site	Protected area (Forest Reserve)
Habitat types	Subtropical/tropical heavily degraded forest
Type of governance

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 reported for Ise Forest Reserve

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 ellioti	2006	Present				Ise Forest Reserve, eastern side	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 reported for Ise Forest Reserve

Category	Specific threats	Threat level	Description	Year of threat
10 Geological events		Absent
12 Other threat		Absent
5 Biological resource use	5.1 Hunting & collecting terrestrial animals	High (more than 70% of population affected)	High hunting pressure; for instance, in 2005 a chimpanzee mother was killed and her baby captured (Greengrass 2006).	Ongoing (2006)
5 Biological resource use	5.3 Logging & wood harvesting	High (more than 70% of population affected)	Logging pressure is intense and increasing (Greengrass 2006).	Ongoing (2006)
1 Residential & commercial development		Unknown
2 Agriculture & aquaculture		Unknown
3 Energy production & mining		Unknown
4 Transportation & service corridors		Unknown
6 Human intrusions & disturbance		Unknown
7 Natural system modifications		Unknown
8 Invasive & other problematic species, genes & diseases		Unknown
9 Pollution		Unknown
11 Climate change & severe weather		Unknown

IUCN Threats list

Challenges

Table 5. Challenges reported for Ise Forest Reserve

Challenges	Specific challenges	Source	Year(s)
	Not reported

Enablers

Table 6. Enablers reported for Ise Forest Reserve

Enablers	Specific enablers	Source	Year(s)
1 Site management
2 Resources and capacity
3 Engaged community
4 Institutional support
5 Ecological context
6 Safety and stability

Documented behaviours

Table 7. Behaviours documented 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 created by: A.P.E.S. Wiki team Date: NA