Data Category | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
Aerial or Ground Total Counts | 3,933 | 0 | 0 | 0 |
Direct Sample Counts and Reliable Dung Counts | 221 | 320 | 320 | 0 |
Informed Guesses | 0 | 0 | 200 | 0 |
Totals 2006 | 4,154 | 320 | 520 | 0 |
Cause of Change | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
New Population | +41 | 0 | 0 | 0 |
Different Technique | +2,082 | -513 | -539 | 0 |
Totals | +2,123 | -513 | -539 | 0 |
Data Category | Known Range | Possible Range | Total Range |
---|---|---|---|
Aerial or Ground Total Counts | 11,110 | 0 | 11,110 |
Direct Sample Counts and Reliable Dung Counts | 2,283 | 0 | 2,283 |
Informed Guesses | 600 | 264 | 863 |
Unassessed Range | 4,474 | 1,141 | 5,615 |
Totals | 18,468 | 1,405 | 19,872 |
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. |
Aires de l'Est Hunting Areas | DT | AT2 | A | 2003 | 2,119 | Bouché et al., 2004b | 1 | 6,077 | 1.0E | 11.6N | |
Arly National Park | DT | AT2 | A | 2003 | 422 | Bouché et al., 2004b | 2 | 1,224 | 1.4E | 11.5N | |
Bontioli Partial & Total Faunal Reserve | - | IG3 | D | 1998 | 50 | Chardonnet, quest. reply, 1998 | 2 | 420 | 3.1W | 10.8N | |
Comoé-Leraba Classified Forests | DT | AT2 | A | 2005 | 3 | Bouché, 2005 | 2 | 1,204 | 4.6W | 9.9N | |
Koakrana Hunting Zone | DT | AT2 | A | 2003 | 0 | Bouché et al., 2004b | 1 | 229 | 1.8E | 11.5N | |
Kourtiagou Partial Faunal Reserve | DT | AT2 | A | 2003 | 0 | Bouché et al., 2004b | 1 | 485 | 2.0E | 11.5N | |
Mare aux Hippopotames Biosphere Reserve | NP | AT2 | A | 2005 | 46 | Bouché, 2005 | 3 | 192 | 4.2W | 11.6N | |
Mohoun Protected Area Complex | - | AS1 | B | 2002 | 541 | 320 | Belemsobgo, 2002 | 1 | 3,296 | 3.3W | 11.6N |
Po - Nazinga - Sissili Ecosystem | DT | AT2 | A | 2003 | 603 | Bouché et al., 2004a | 1 | 6,093 | 1.5W | 11.3N | |
W du Burkina National Park | DT | AT2 | A | 2003 | 740 | Bouché et al., 2004b | 2 | 2,412 | 2.2E | 11.9N | |
Zabré Department | - | IG3 | D | 1998 | 150 | Chardonnet, quest. reply, 1998 | 2 | 600 | .6W | 11.1N |
* 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.