Data Category | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
Aerial or Ground Sample Counts | 0 | 108 | 185 | 0 |
Informed Guesses, Undocumented Aerial or Dung Surveys and GIS Extrapolations | 717 | 0 | 300 | 100 |
Other Guesses and Other Extrapolations | 0 | 0 | 0 | 15,000 |
Total | 717 | 108 | 485 | 15,100 |
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. |
Central Zone | OG3 | E | 1992 | 8,175 | Chambal, 1993 | 1 | 341,339 | 33.6E | 16.6S | |
Chimanimani Mountain Range ns | IG3 | D | 100 | Anstey pers. comm., 1995 | 1 | |||||
Gorongosa National Park | AS3 | B | 1994 | 108 | 185 | Cumming et al., 1994 | 3 | 2,075 | 34.3E | 18.8S |
Maputo Game Reserve | IG3 | D | 50 | 100* | Anstey pers. comm., 1995 | 3 | 879 | 32.8E | 26.4S | |
Marromeu Game Reserve | IG3 | D | 150 | Anstey pers. comm., 1995 | 3 | 1,104 | 35.9E | 18.8S | ||
Niassa (Ruvuma) Game Reserve | IG3 | D | 717 | Anstey pers. comm., 1995 | 2 | 14,928 | 37.0E | 12.2S | ||
Northern Zone | OG3 | E | 1992 | 3,825 | Chambal, 1993 | 1 | 167,335 | 37.7E | 13.3S | |
Southern Zone | OG3 | E | 1992 | 3,000 | Chambal, 1993 | 1 | 280,137 | 33.1E | 22.3S |
* 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.