Oni Forest Reserve
West Africa >Nigeria > Oni Forest Reserve
Summary[edit]
- Nigeria-Cameroon chimpanzees (Pan troglodytes ellioti) are absent in Oni Forest Reserve
- Chimpanzees have gone extinct at Oni Forest Reserve in the 90s.
- The site has a total size of 56 km².
- Key threats to chimpanzees are habitat destruction due to extensive farming.
- Conservation activities are not documented.
Site characteristics[edit]
The site is located in the Ekiti state in Nigeria. Chimpanzees have not been observed in the reserve since 1993, and in its current condition it holds little value in terms of its natural biodiversity. Due to extensive farming, the site has in effect become unofficially de-gazetted (Greengrass 2006).
Table 1. Basic site information for Oni Forest Reserve
Area | 56 km² |
Coordinates | 7.3513, 4.80381 |
Designation | Forest Reserve |
Habitat types | Plantations, subtropical/tropical heavily degraded forest |
IUCN habitat categories Site designations
Ape status[edit]
Chimpanzees have not been observed in the reserve, nor near the reserve, since 1993 (Greengrass 2003).
Table 2. Ape population estimates in Oni 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 | 0 | Oni Forest Reserve | Index survey (reconnaissance walk) | Greengrass 2006 |
Threats[edit]
The main threats to chimpanzees and wildlife at the reserve include illegal and widespread farming in the 1990s and timber extraction that began in 1987 (Greengrass 2006).
Table 3. Threats to apes in Oni 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 | Forest clearing for farmland throughout the reserve (Greengrass 2006). | Ongoing (2006) | |
3. Energy production & mining | Unknown | ||||
4. Transportation & service corridors | Unknown | ||||
5. Biological resource use | 5.3 Logging & wood harvesting | High | Timber extraction that began in 1987 (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 Oni 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]
Illegal clearing and farming occurred with the assistance of a corrupt police administrator who prevented the forestry department from acting against it. Violent attacks on forestry staff have also occurred on several occasions (Greengrass 2006).
Table 5. Challenges reported for Oni Forest Reserve
Challenge | Source |
---|---|
Corruption | Greengrass 2006 |
Violent attacks on forestry staff | Greengrass 2006 |
Research activities[edit]
Documented behaviours[edit]
Table 6. Ape behaviors reported for Oni 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: 17/03/2023