Elephant Database
African Elephant Specialist Group

Chad, 2002

All Years for Chad: 201620132007200219981995

2002 Summary Totals for Chad

Data Category Definite Probable Possible Speculative
Aerial or Ground Total Counts1,989000
Informed Guesses002,000550
Total1,98902,000550

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.
Dembo AreaIG3D2002600 100*Dolmia Malachie and Lassou, 200232,409 18.0E 8.2N
Gagal-Yapala AreaIG3D2002400 100*Dolmia Malachie and Lassou, 200225,098 14.9E 9.1N
Koloudia-Doumdoum AreaIG3D200250 50*Dolmia Malachie and Lassou, 200232,180 15.3E 13.4N
Lac Fitri AreaIG3D2002200 100*Dolmia Malachie and Lassou, 2002211,670 17.6E 12.9N
Larmanaye AreaIG3D2002100 50*Dolmia Malachie and Lassou, 200232,340 15.5E 8.1N
Massenya-Mandjafa AreaIG3D2002150 50*Dolmia Malachie and Lassou, 2002210,864 16.3E 11.3N
Siniaka-Minia Faunal ReserveIG3D2002500 100*Dolmia Malachie and Lassou, 200224,743 18.2E 10.4N
Zakouma National ParkAT2A20001,989Planton, 200022,987 19.6E 10.8N

* 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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