Data Category | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
Aerial or Ground Total Counts | 1,100 | 0 | 0 | 0 |
Dung Counts | 0 | 6,689 | 2,157 | 0 |
Informed Guesses, Undocumented Aerial or Dung Surveys and GIS Extrapolations | 0 | 0 | 6,667 | 500 |
Other Guesses and Other Extrapolations | 0 | 0 | 0 | 100 |
Total | 1,100 | 6,689 | 8,824 | 600 |
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 | 100 | Ekobo, Quest. Reply, 1994a | 3 | 1,541 | 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 | 540 | Tchamba et al., 1991 | 3 | 1,782 | 13.8E | 8.4N | ||
Bouba-Ndjidah National Park | IG3 | D | 660 | Tchamba et al., 1991 | 3 | 1,940 | 14.7E | 8.6N | ||
Boumba-Bek Forest Reserve | DC2 | C | 1991 | 1,404 | 82 | Ekobo, pers. comm., 1994b | 2 | 2,330 | 15.0E | 2.7N |
Dja Reserve | IG3 | D | 1,500 | 500* | Tchamba, pers. comm., 1995 | 2 | 6,195 | 13.0E | 3.1N | |
Faro National Park | IG3 | D | 60 | Tchamba, 1993a | 2 | 3,411 | 12.7E | 8.2N | ||
Korup National Park | DC3 | C | 1993 | 425 | 271 | Powell, Quest. Reply, 1993 | 3 | 1,250 | 8.9E | 5.2N |
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 |
Remaining Forest Area NS | EX3 | D | 3,547 | Michelmore et al., 1994 | 1 | |||||
Sudanian Zone outside Input Areas 101,102 and 103 ns | IG3 | D | 360 | Tchamba et al., 1991 | 1 | |||||
Waza National Park | AT3 | A | 1991 | 1,100 | 0 | Tchamba, 1993a; Tchamba, Quest. Reply, 1993b | 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.