Data Category | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
Direct Sample Counts and Reliable Dung Counts | 12,531 | 3,276 | 3,276 | 0 |
Informed Guesses | 0 | 0 | 20 | 0 |
Totals 2006 | 12,531 | 3,276 | 3,296 | 0 |
Cause of Change | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
Repeat Survey | +4,760 | +2,579 | +3,157 | 0 |
New Population | +4 | +159 | +402 | 0 |
Different Area | +13 | -1,334 | -2,205 | 0 |
New Guess | -16 | 0 | +70 | 0 |
Totals | +4,762 | +1,404 | +1,424 | 0 |
Data Category | Known Range | Possible Range | Total Range |
---|---|---|---|
Direct Sample Counts and Reliable Dung Counts | 73,567 | 6,964 | 80,531 |
Informed Guesses | 359 | 0 | 359 |
Unassessed Range | 15,082 | 50,949 | 66,031 |
Totals | 89,008 | 57,913 | 146,921 |
Cause of | Survey Details2 | Number of Elephants | Area | Map Location | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Input Zone | Change1 | Type | Reliab. | Year | Estimate | 95% C.L. | Source | PFS3 | (km²) | Lon. | Lat. |
Caprivi Region | RS | AS2 | B | 2004 | 8,725 | 2,206 | Kolberg, 2004 | 2 | 17,943 | 23.5E | 17.9S |
Etosha National Park | RS | AS1 | B | 2004 | 2,057 | 598 | Kilian & Kolberg, 2004 | 2 | 18,551 | 15.9E | 19.0S |
Khaudom - Kavango | RS | AS2 | B | 2004 | 3,787 | 2,289 | Kolberg, 2004 | 2 | 10,485 | 20.8E | 18.6S |
Kunene | DA | AS1 | B | 2005 | 210 | 157 | MET, 2005b | 1 | 31,144 | 13.7E | 19.3S |
Mangetti Game Reserve | NG | IG3 | D | 2005 | 20 | MET, 2005 | 3 | 762 | 19.1E | 18.7S | |
N#a-Jaqna Conservancy | NP | AS2 | B | 2004 | 61 | 115 | Kolberg, 2004 | 2 | 9,143 | 19.6E | 19.6S |
Nyae Nyae Conservancy | RS | AS1 | B | 2004 | 967 | 481 | Stander, 2004 | 2 | 2,957 | 20.5E | 19.6S |
* 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.