Elephant Database
African Elephant Specialist Group

Equatorial Guinea
Provisional African Elephant Population Estimates: update to 31 Dec 2013

All Years for Equatorial Guinea: 201620132007200219981995

Summary Totals for Equatorial Guinea

Estimates from SurveysGuesses% Known and
Possible Range
Area (km2)
Survey categoryEstimate± 95% CLFromTo
Reliable Dung Counts884676100.019,704
Totals 201588467600  
Totals 2006001,0001,330  
Assessed Range100.019,704
Unassessed Range-0.0-2
Total Range10019,701

Summary Totals for Equatorial Guinea

Data Category Definite Probable Possible Speculative
Direct Sample Counts and Reliable Dung Counts2086766760
Totals 20132086766760
Totals 200600700630

Interpretation of Changes in Estimates from Previous Report

 Estimates from SurveysGuessesArea
Cause of Change Estimate ± 95% CL From To% Known and PossibleTotal
Different Area+884±676-1,000-1,330100.019,704
Totals+884±676-1,000-1,330100.019,704

Interpretation of Changes in Estimates from Previous Report

Cause of Change Definite Probable Possible Speculative
Different Area+208+676-24-630
Totals+208+676-24-630

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

Cause of Change Definite Probable Possible Speculative
Different Area+208+676-24-630
Totals+208+676-24-630

Area of Range Covered by Each Data Category (km²)

Data CategoryKnown RangePossible RangeTotal Range
Direct Sample Counts and Reliable Dung Counts9,8089,89519,704
Unassessed Range0-2-2
Totals9,8089,89319,701

Equatorial Guinea: Elephant Estimates

Cause ofSurvey Details2 Number of Elephants Area Map Location
Input ZoneChange1TypeReliab.YearEstimate95% C.L. SourcePFS3 (km²) Lon. Lat.
+ Rio Muni RegionDADCB2011884 676Murai et al., 2013124,635 10.5E 1.7N
DADCB2011884 676Murai et al., 201324,635 10.5E 1.7N

* 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.

IUCNSpecies Survival Commission

All materials on this site are Copyright (C) 1995-2024 IUCN - The International Union for the Conservation of Nature. Use is permitted only under the Creative Commons Attribution-NonCommercial-ShareAlike license (https://creativecommons.org/licenses/by-nc-sa/4.0).