Elephant Database
African Elephant Specialist Group

Nigeria, 1998

All Years for Nigeria: 201620132007200219981995

1998 Summary Totals for Nigeria

Data Category Definite Probable Possible Speculative
Informed Guesses1570860196
Other Guesses00040

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, 19933215 7.5E 4.5N
Chingurmi-Duguma Sector, Chad Basin National ParkIG3D1994100Mshelbwala, 199822,160 14.4E 11.7N
Gashaka-Gumti National ParkIG3D199710Gawaisa, Quest. Reply, 199815,860 11.7E 7.5N
KambariIG3D19985 10*Gawaisa, Quest. Reply, 199822,000 10.6E 8.8N
Kwiambana Game ReserveIG3D199380 40*Hurst, Quest. Reply, 199421,715 6.6E 11.3N
Madagali and KopreIG3D1996200 50*Gawaisa, Quest. Reply, 199815,600 12.8E 11.1N
Okomu Game SanctuaryOG3E199140NCF, 199121,082 5.1E 6.4N
Okwangwo Division, Cross River National ParkDC3D199874 56*Obot et al., 19983239 9.2E 6.3N
Omo Forest ReserveIG3D199430 20*Mshelbwala, 199821,300 3.6E 6.8N
Taylor CreekIG3D199325Powell, in Thouless, 19933145 6.4E 5.2N
Yankari National ParkIG3D1993463Mshelbwala, 199822,254 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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