|Aerial or Ground Sample Counts||62,998||8,588||8,588||0|
|Informed Guesses, Undocumented Aerial or Dung Surveys and GIS Extrapolations||0||0||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.|
|Northern Botswana||AS1||B||9394||70,755||8,576||ULG, 1993, 1994a,b||1||159,013||23.6E||19.6S|
|Rest of Botswana||AS3||D||1994||0||ULG, 1994a,b||1||419,019||23.9E||23.2S|
|Tuli Game Reserve||AS1||B||1994||831||456||ULG, 1994a,b||2||927||29.1E||22.2S|
* 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.