Data Category | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
Aerial or Ground Total Counts | 1,071 | 0 | 0 | 0 |
Dung Counts | 0 | 5,285 | 2,156 | 0 |
Informed Guesses | 0 | 0 | 6,548 | 500 |
Other Guesses | 0 | 0 | 0 | 175 |
Total | 1,071 | 5,285 | 8,704 | 675 |
No changes between current and previous report.
Survey Details2 | Number of Elephants | Area | Map Location | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Input Zone | Type | Reliab. | Year | Estimate | 95% C.L. | Source | PFS3 | (km²) | Lon. | Lat. |
Abong-Mbang Forest Reserve | OG3 | E | 1994 | 100 | Ekobo, Quest. Reply, 1994a | 3 | 1,540 | 13.1E | 4.2N | |
Banyang-Mbo Forest Reserve | DC3 | C | 1993 | 368 | 236 | Powell, Quest. Reply, 1993 | 3 | 426 | 9.6E | 5.3N |
Benoué National Park | IG3 | D | 1991 | 540 | Tchamba et al., 1991 | 3 | 1,800 | 13.8E | 8.3N | |
Bouba Ndjidah National Park | IG3 | D | 1991 | 660 | Tchamba et al., 1991 | 3 | 2,200 | 14.7E | 8.6N | |
Boumba-Bek Forest Reserve | DC3 | D | 1998 | 1,250 | Ekobo, pers. comm., 1998 | 3 | 2,500 | 15.0E | 2.7N | |
Dja Faunal Reserve | IG3 | D | 1995 | 1,500 | 500* | Tchamba, pers. comm., 1995 | 2 | 5,260 | 13.0E | 3.1N |
Faro National Park | IG3 | D | 1991 | 60 | Tchamba, 1993 | 2 | 3,300 | 12.7E | 8.2N | |
Korup National Park | DC3 | C | 1993 | 425 | 271 | Powell, Quest. Reply, 1993 | 3 | 1,259 | 9.0E | 5.2N |
Lake Lobeke Forest Reserve | DC2 | C | 1993 | 3,719 | 2,125 | Ekobo, 1995 | 3 | 1,985 | 15.9E | 2.3N |
Mongokele Forest Reserve | DC2 | C | 1991 | 773 | 53 | Ekobo, pers. comm., 1994b | 3 | 850 | 16.0E | 2.1N |
Mount Cameroon | OG3 | E | 1993 | 75 | Wanzie, 1993 | 3 | 485 | 9.2E | 4.2N | |
Nki Forest Reserve | DC3 | D | 1998 | 2,178 | Ekobo, pers. comm., 1998 | 3 | 1,815 | 14.5E | 2.4N | |
Remaining Sudanian Area | IG3 | D | 1991 | 360 | Tchamba et al., 1991 | 2 | 24,985 | 13.7E | 8.3N | |
Waza National Park | AT3 | A | 1991 | 1,071 | Tchamba & Elkan, 1995 | 3 | 1,700 | 14.7E | 11.3N |
* Range of informed guess
1Key to Causes of Change (only tracked since 2007): DA: Different Area; DD: Data Degraded; DT: Different Technique; NA: New Analysis; NG: New Guess; NP: New population; PL: Population Lost; RS: Repeat Survey (RS ́ denotes a repeat survey that is not statistically comparable for reasons such as different season); –––: No Change
2Key to Survey Types: AC: Aerial Count, not specified; AS: Aerial Sample Count; AT: Aerial Total Count; DC: Dung Count; EX: Extrapolation from GIS; GD: Genetic Dung Count; GS: Ground Sample Count; GT: Ground Total Count; IG: Informed Guess; IR: Individual Registration; OG: Other Guess. Survey Type is followed by an indicator of survey quality, ranked from 1 to 3 (best to worst). Survey Reliability is keyed A-E (best to worst) as outlined in this table.
3PFS: Priority for Future Surveys, ranked from 1 to 5 (highest to lowest). Based on the precision of estimates and the proportion of national range accounted for by the site in question, PFS is a measure of the importance and urgency for future population surveys. All areas of unassessed range have a priority of 1. See Introduction for details on how the PFS is derived.