Elephant Database
African Elephant Specialist Group

Nigeria, 1995

All Years for Nigeria: 201620132007200219981995

1995 Summary Totals for Nigeria

Data Category Definite Probable Possible Speculative
Informed Guesses, Undocumented Aerial or Dung Surveys and GIS Extrapolations001,065210
Other Guesses and Other Extrapolations000340

No changes between current and previous report.

Nigeria : Elephant Estimates

Survey Details2 Number of Elephants Area Map Location
Input ZoneTypeReliab.YearEstimate95% C.L. SourcePFS3 (km²) Lon. Lat.
Andoni IslandIG3D199330 20*Thouless, 19933118 7.5E 4.5N
Kamuka Game Reserve and Kwiambana Game ReserveIG3D199380 40*Hurst, Quest. Reply, 1994; Anstey & Dunn, Quest. Reply23,730 6.6E 11.1N
Lake Chad nsOG3E300NRCC, 199123,508
Okomu Game ReserveOG3E40NCF, 19913245 5.1E 6.5N
Omo Biosphere ReserveDC3D199330Coad, 19932871 3.4E 7.1N
Sambisa Game ReserveIG3D1993300 100*Hurst, Quest. Reply, 1994; Anstey & Dunn, Quest. Reply2518 13.6E 11.4N
Taylor CreekIG3D25Powell, pers. comm., in Thouless, 19933144 6.4E 5.2N
Yankari National ParkIG3D1993600 50*Hurst, Quest. Reply, 199422,244 10.5E 9.8N

* 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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