Elephant Database
African Elephant Specialist Group

Provisional African Elephant Population Estimates: update to 31 Dec 2013

All Years for Togo: 201620132007200219981995

Summary Totals for Togo

Estimates from SurveysGuesses% Known and
Possible Range
Area (km2)
Survey categoryEstimate± 95% CLFromTo
Degraded Data656572.34,560
Totals 2015006565  
Totals 2006406161  
Assessed Range72.34,560
Unassessed Range27.71,747
Total Range1006,307

Summary Totals for Togo

Data Category Definite Probable Possible Speculative
Other Guesses40061
Totals 201340061
Totals 200640610

Interpretation of Changes in Estimates from Previous Report

 Estimates from SurveysGuessesArea
Cause of Change Estimate ± 95% CL From To% Known and PossibleTotal
Data Degraded-40+4+472.34,560

Interpretation of Changes in Estimates from Previous Report

Cause of Change Definite Probable Possible Speculative
Data Degraded00-61+61

Interpretation of Changes in Estimates from Previous Report (2007 scaling)

Cause of Change Definite Probable Possible Speculative
Data Degraded00-61+61

Area of Range Covered by Each Data Category (km²)

Data CategoryKnown RangePossible RangeTotal Range
Other Guesses1,9862,5744,560
Unassessed Range6571,0901,747

Togo: Elephant Estimates

Cause ofSurvey Details2 Number of Elephants Area Map Location
Input ZoneChange1TypeReliab.YearEstimate95% C.L. SourcePFS3 (km²) Lon. Lat.
+ Abdoulayé Faunal Reserve-OE20024Okoumassou, pers. comm., 20022300 1.3E 8.7N
-OE20024Okoumassou, pers. comm., 2002300 1.3E 8.7N
+ Fazao Malfakassa National Park-OE200261Okoumassou, quest. reply, 200211,920 0.8E 8.7N
-OE200261Okoumassou, quest. reply, 20021,920 0.8E 8.7N
+ Fosse aux Lions-OE20020Okoumassou, pers. comm., 2002317 0.2E 10.8N
-OE20020Okoumassou, pers. comm., 200217 0.2E 10.8N
+ Kéran National Park-ATE20030Bouché et al., 2004b11,402 0.7E 10.1N
-ATE20030Bouché et al., 2004b1,402 0.7E 10.1N
+ Oti Mandori Faunal Reserve-ATE20030Bouché et al., 2004b11,484 0.7E 10.6N
-ATE20030Bouché et al., 2004b1,484 0.7E 10.6N

* 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.

Note that totals for the Definite, Probable, and Possible categories are derived by pooling the variances of individual estimates, as described at http://www.africanelephantdatabase.org/reliability. As a result, totals do not necessarily match the simple sum of the entries within a given category.

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