| Data Category | Definite | Probable | Possible | Speculative |
|---|---|---|---|---|
| Other Guesses | 0 | 0 | 0 | 1,783 |
| Total | 0 | 0 | 0 | 1,783 |
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. |
| Barrobo National Forest | OG3 | E | 1990 | 99 | Anstey & Dunn, 1991 | 2 | 640 | 8.0W | 4.9N | |
| Gola, Kpelle and Lorma National Forest | OG3 | E | 1990 | 495 | Anstey & Dunn, 1991 | 1 | 4,255 | 10.4W | 7.5N | |
| Grebo National Forest | OG3 | E | 1990 | 231 | Anstey & Dunn, 1991 | 2 | 2,510 | 7.6W | 5.5N | |
| Krahn Bassa National Forest | OG3 | E | 1990 | 495 | Anstey & Dunn, 1991 | 1 | 5,142 | 8.8W | 5.8N | |
| North East National Forest | OG3 | E | 1990 | 33 | Anstey & Dunn, 1991 | 3 | 130 | 9.5W | 8.1N | |
| Sapo National Park | DC3 | E | 1990 | 430 | Anstey & Dunn, 1991 | 2 | 1,292 | 8.5W | 5.4N | |
* 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.
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