|Other Dung Counts||0||8,132||3,507||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.|
|Gamba Reserve Complex||IG3||D||1999||11,205||969*||Thibault et al., 2001||2||10,485||10.1E||2.4S|
|Lopé Faunal Reserve & environs||DC2||C||2000||8,132||3,507||Thomas et al., 2001||2||14,360||11.8E||0.5S|
|Rest of Gabon Forest Range||DC2||E||1988||57,340||20,678||Barnes et al., 1997||1||222,627||11.8E||0.4S|
* 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.