Ise Forest Reserve
West Africa > Nigeria > Ise Forest Reserve
Summary[edit]
- 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[edit]
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[edit]
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[edit]
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 |
Conservation activities[edit]
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[edit]
Table 5. Challenges reported for Ise Forest Reserve
Challenge | Source |
---|---|
Not reported |
Research activities[edit]
Documented behaviours[edit]
Table 6. Ape behaviors reported for Ise Forest Reserve
Behavior | Source |
---|---|
Not reported |
External links[edit]
References[edit]
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