|Aerial or Ground Total Counts||1,750||0||0||0|
|Informed Guesses, Undocumented Aerial or Dung Surveys and GIS Extrapolations||0||0||2,640||0|
|Other Guesses and Other Extrapolations||0||0||0||4,894|
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.|
|Bamingui-Bangoran Complex||AS3||E||1985||1,607||1,896||Douglas-Hamilton et al., 1985||2||32,000||20.0E||7.7N|
|Bangassou Forest||DC3||D||1989||2,640||Fay & Agnagna, 1991a; Fay, 1991||2||5,550||23.3E||5.2N|
|Dzanga-Sangha Reserve||IR1||A||1993||1,750||Turkalo, Quest. Reply, 1993; Turkalo & Fay, 1995||2||3,293||16.2E||3.0N|
|Manovo-Gounda-Saint Floris Complex||AS3||E||1985||2,701||1,837||Douglas-Hamilton et al., 1985||2||32,400||21.6E||9.2N|
|Manovo Intensive||AS2||E||1985||444||319||Douglas-Hamilton et al., 1985||2||4,800||21.2E||8.7N|
|Rhino Sector||AS2||E||1985||51||48||Douglas-Hamilton et al., 1985||3||2,700||20.9E||7.4N|
|Vassako-Bolo||AS2||E||1985||91||120||Douglas-Hamilton et al., 1985||3||2,500||19.8E||8.0N|
* 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.