Elephant Database
African Elephant Specialist Group

Chad, 1995

All Years for Chad: 201620132007200219981995

1995 Summary Totals for Chad

Data Category Definite Probable Possible Speculative
Informed Guesses, Undocumented Aerial or Dung Surveys and GIS Extrapolations001,0400
Other Guesses and Other Extrapolations0002,100

No changes between current and previous report.

Chad : Elephant Estimates

Survey Details2 Number of Elephants Area Map Location
Input ZoneTypeReliab.YearEstimate95% C.L. SourcePFS3 (km²) Lon. Lat.
Batha Guera RegionOG3E500Daboulaye & Thomassey, 19901149,993 18.8E 13.0N
Chari Baguirmi RegionOG3E300Daboulaye pers. comm., 1995196,278 16.5E 11.6N
Chari West RegionOG3E800Daboulaye pers. comm., 1995145,315 18.5E 9.0N
Lac TchadOG3E100Daboulaye & Thomassey, 1990223,733 14.5E 13.7N
Salamat RegionOG3E400Daboulaye pers. comm., 1995164,257 20.4E 10.0N
Zakouma National ParkAS3D19911,040DPNRF, 199123,156 20.7E 11.2N

* 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.

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