Data Category | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
Aerial or Ground Total Counts | 469 | 0 | 0 | 0 |
Aerial or Ground Sample Counts | 4,001 | 7,174 | 7,174 | 0 |
Dung Counts | 0 | 6,000 | 1,000 | 0 |
Informed Guesses, Undocumented Aerial or Dung Surveys and GIS Extrapolations | 0 | 0 | 57,800 | 0 |
Total | 4,470 | 13,174 | 65,974 | 0 |
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. |
Bushimae | IG3 | D | 1987 | 120 | Won wa Musiti, Quest. Reply, 1991 | 3 | 5,266 | 23.0E | 7.4S | |
Garamba National Park and Surrounding Reserves | AS2 | B | 1995 | 11,175 | 7,174 | Smith et al., 1995a | 2 | 15,125 | 29.3E | 4.0N |
Ituri | IG3 | D | 1989 | 6,730 | Alers et al., 1992 | 2 | 30,000 | 27.3E | 2.1N | |
Kahuzi-Biega National Park | IG3 | D | 1989 | 9,000 | Alers et al., 1992 | 3 | 6,000 | 28.1E | 2.1S | |
Lomami | IG3 | D | 1989 | 8,000 | Alers et al., 1992 | 2 | 32,000 | 24.7E | 1.2S | |
Maiko National Park | DC2 | C | 1992 | 6,000 | 1,000 | Hart & Sikubwabo, 1994 | 3 | 10,800 | 27.6E | 0.4S |
Rest of Forest | IG3 | D | 1989 | 27,620 | Alers et al., 1992 | 1 | 1,061,000 | 23.4E | 0.5N | |
Salonga Nord National Park | IG3 | D | 1989 | 2,650 | Alers et al., 1992 | 2 | 19,000 | 21.7E | 1.6S | |
Salonga Sud National Park | IG3 | D | 1989 | 3,680 | Alers et al., 1992 | 3 | 17,000 | 20.9E | 2.5S | |
Virunga National Park | AT2 | A | 1990 | 469 | 0 | Aveling, 1990 | 3 | 7,506 | 29.5E | 0.4S |
* 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.