Data Category | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
Aerial or Ground Total Counts | 2,121 | 0 | 0 | 0 |
Aerial or Ground Sample Counts | 71,338 | 12,199 | 12,199 | 0 |
Dung Counts | 0 | 220 | 88 | 0 |
Informed Guesses, Undocumented Aerial or Dung Surveys and GIS Extrapolations | 0 | 0 | 14 | 0 |
Total | 73,459 | 12,419 | 12,301 | 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. |
Burigi Game Reserve | AS2 | B | 1990 | 71 | 92 | TWCM, 1992a | 2 | 6,102 | 31.2E | 2.3S |
Katavi-Rukwa Area | AS2 | B | 1991 | 5,360 | 4,065 | TWCM, 1992c | 2 | 12,641 | 31.4E | 7.0S |
Kilimanjaro National Park | DC2 | C | 1990 | 220 | 88 | TWCM, 1992a | 3 | 418 | 37.3E | 3.0S |
Lake Manyara National Park | AT3 | A | 1990 | 149 | 0 | TWCM, 1992a | 4 | 246 | 35.6E | 3.7S |
Mkomazi Game Reserve | AT3 | A | 1994 | 300 | 0 | Douglas-Hamilton et al., 1994 | 3 | 3,509 | 38.3E | 4.2S |
Moyowosi/Kigosi Area | AS2 | B | 1994 | 1,583 | 1,382 | Farm, pers. comm., 1995b | 2 | 21,869 | 31.3E | 4.2S |
Ruaha-Rungwe Ecosystem | AS2 | B | 1993 | 18,864 | 3,578 | TWCM, 1993 | 1 | 41,927 | 34.4E | 6.9S |
Rubondo Island National Park | IG3 | D | 1990 | 14 | TWCM, 1992a | 4 | 400 | 31.9E | 2.3S | |
Selous Ecosystem | AS2 | B | 1994 | 52,151 | 10,661 | TWCM, 1995b | 1 | 91,981 | 37.4E | 8.9S |
Serengeti Ecosystem | AT3 | A | 1994 | 1,672 | 0 | TWCM, 1995b | 2 | 21,413 | 35.0E | 2.6S |
Tarangire Ecosystem | AS2 | B | 1994 | 3,888 | 1,832 | TWCM, 1995a | 2 | 12,826 | 36.2E | 4.1S |
Ugalla River Game Reserve | AS2 | B | 1991 | 1,620 | 749 | TWCM, 1992b | 2 | 6,984 | 31.9E | 5.8S |
* 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.