Data Category | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
Aerial or Ground Total Counts | 414 | 0 | 0 | 0 |
Direct Sample Counts and Reliable Dung Counts | 198 | 1,569 | 1,569 | 0 |
Informed Guesses | 35 | 0 | 80 | 20 |
Total | 647 | 1,569 | 1,649 | 20 |
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. |
Kasungu National Park | AS2 | B | 1995 | 391 | 349 | Bhima, 1996 | 1 | 2,316 | 33.1E | 12.9S |
Liwonde National Park | AT3 | A | 1995 | 414 | Bhima, 1996 | 2 | 538 | 35.3E | 14.9S | |
Nkhota-Kota Wildlife Reserve | AS2 | B | 1995 | 1,037 | 1,511 | Japan International Cooperation Agency and Government of Malawi, 1997 | 1 | 1,802 | 34.0E | 12.9S |
Nyika National Park | AS1 | B | 1997 | 339 | 239 | Gibson, 1997b | 1 | 3,134 | 33.8E | 10.6S |
Phirilongwe Forest Reserve | IG3 | D | 1998 | 50 | Munthali pers. comm., 1998 | 2 | 640 | 35.0E | 14.6S | |
Thuma Forest Reserve | IG3 | D | 1998 | 30 | 20* | Munthali pers. comm., 1998 | 2 | 370 | 34.2E | 13.9S |
Vwaza Marsh Wildlife Reserve | IG3 | D | 1997 | 35 | Gibson, 1997b | 2 | 986 | 33.4E | 11.0S |
* 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.