Bagnomba
West Africa > Senegal > Bagnomba
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Summary
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
- Western chimpanzees (Pan troglodytes verus) are present in Bagnomba.
- The population size is unknown.
- The chimpanzee population trend is unknown.
- The size of the site is unknown.
- Key threats to chimpanzees are logging and transformation of land for agriculture.
- Conservation activities have focused on research activities; the site is also an offset site of the Petowal mining company.
Site characteristics
The site is located in the savanna-woodlands of southeastern Senegal, 15 km away from the Fongoli research site (Badji et al. 2018).
Table 1. Basic site information for Bagnomba
Species | Pan troglodytes verus |
Area | km² |
Coordinates | Lat: 12.713017 , Lon: -12.376238 |
Type of site | Non-protected area |
Habitat types | Savanna, Subtropical/tropical dry forest |
Type of governance |
IUCN habitat categories Site designations
Ape status
Chimpanzees are present in the area but the population size is currently unknown.
Table 2. Ape population estimates reported for Bagnomba
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 verus | 2014-2015 | Present | Bagnomba | Reconnaissance walk | Ndiaye et al. 2017 | ||||
Pan troglodytes verus | 2015 | Present | Bagnomba Hill, 5 sq. km | Reconnaissance walk | Badji et al. 2018 | survey effort: 65 km. 550 nests recorded | |||
Pan troglodytes verus | 2020 | Bagnomba | Line transects, Camera trap | Diallo, D. pers. comm. 2023 |
Threats
Direct threats at Bagnomba include deforestation around the base of the hill due to agriculture and livestock grazing. Gold mining is present within a 3 km radius from the hill (Badji et al. 2018).
Table 3. Threats to apes reported for Bagnomba
Category | Specific threats | Threat level | Description | Year of threat |
---|---|---|---|---|
1 Residential & commercial development | Unknown | |||
2 Agriculture & aquaculture | 2.1 Annual & perennial non-timber crops | High | Expansion of agricultural land in the area (Diallo, D. pers. comm. 2023). | Ongoing (2023) |
3 Energy production & mining | Unknown | |||
4 Transportation & service corridors | Unknown | |||
5 Biological resource use | 5.3 Logging & wood harvesting | High | Extraction of timber for construction (Diallo, D. pers. comm. 2023). | Ongoing (2023) |
5 Biological resource use | 5.2 Gathering terrestrial plants | High | Competition for Adansonia digitata, baobab, which chimpanzees also feed on (Diallo, D. pers. comm. 2023). | Ongoing (2023) |
6 Human intrusions & 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 threat | Absent |
Conservation activities
Challenges
Table 5. Challenges reported for Bagnomba
Challenges | Specific challenges | Source | Year(s) |
---|---|---|---|
Not reported |
Enablers
Table 6. Enablers reported for Bagnomba
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 |
Research activities
A few studies have been conducted at the site, including the investigation of chimpanzee nesting behavior (Badji et al. 2018), and surveys that have included the area (Ndiaye et al. 2017, Diallo, D. pers. comm. 2023).
Documented behaviours
Table 7. Behaviours documented for Bagnomba
Behavior | Source |
---|---|
Ground nest | Badji et al. 2018 |
Exposure to climate change impacts
External links
Relevant datasets
References
Badji, L., Ndiaye, P. I., Lindshield, S. M., Ba, C. T., & Pruetz, J. D. (2018). Savanna chimpanzee (Pan troglodytes verus) nesting ecology at Bagnomba (Kedougou, Senegal). Primates, 59, 235-241.
Ndiaye, P. I., Lindshield, S. M., Badji, L., & Pruetz, J. D. (2017, January). Survey of Chimpanzees, Pan troglodytes verus (Schwarz, 1934), Outside the Protected Areas in Senegal (West Africa). In FOLIA PRIMATOLOGICA (Vol. 88, No. 2, pp. 113-114). ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND: KARGER.
Page created by: Dame Diallo Date: NA