Ise Forest Reserve

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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

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: 03/03/2023