Data Category | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
Aerial or Ground Total Counts | 6 | 0 | 0 | 0 |
Informed Guesses | 628 | 0 | 920 | 200 |
Other Guesses | 0 | 0 | 0 | 6 |
Totals 2006 | 634 | 0 | 920 | 206 |
Cause of Change | Definite | Probable | Possible | Speculative |
---|---|---|---|---|
New Guess | +238 | 0 | -45 | -129 |
Totals | +238 | 0 | -45 | -129 |
Data Category | Known Range | Possible Range | Total Range |
---|---|---|---|
Informed Guesses | 8,988 | 15,907 | 24,895 |
Other Guesses | 1,129 | 0 | 1,129 |
Unassessed Range | 646 | 11,695 | 12,341 |
Totals | 10,763 | 27,602 | 38,365 |
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. |
Babille Elephant Sanctuary | NG | IG3 | D | 2005 | 264 | Y. Demeke, pers. comm., 2006 | 2 | 3,508 | 42.3E | 8.7N | |
Chebera-Churchura Wildlife Reserve | - | IG3 | D | 2001 | 60 | Chago et al., 2001 | 2 | 4,212 | 36.8E | 6.9N | |
Dabus Valley Controlled Hunting Area | - | IG3 | D | 1998 | 200 | M. Abdi, pers. comm., 1998 | 2 | 2,127 | 35.1E | 10.6N | |
Gambella National Park | - | IG3 | D | 2002 | 200 | EWCO, 2002 | 1 | 5,061 | 33.9E | 8.0N | |
Mago & Omo National Parks | - | IG3 | D | 2002 | 324 | 200* | Demeke, 2003 | 1 | 6,230 | 36.0E | 5.8N |
Mizan Teferi Controlled Hunting Area | - | IG3 | D | 1998 | 500 | M. Abdi, pers. comm., 1998 | 2 | 3,160 | 35.7E | 7.4N | |
Shire | - | AT2 | A | 1997 | 6 | Litoroh, 1997a | 2 | 1,123 | 37.8E | 14.3N | |
Tekezze Valley Wildlife Reserve | - | AT2 | E | 1996 | 6 | Litoroh, 1997a | 2 | 1,130 | 37.2E | 14.2N |
* 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.