2007 Regional Totals for West Africa

All Years for West Africa: 2016 — 2013 — 2007 — 2002 — 1998 — 1995

2007 Summary Totals for West Africa

Data Category	Definite	Probable	Possible	Speculative
Aerial or Ground Total Counts	6,001	0	0	0
Direct Sample Counts and Reliable Dung Counts	947	375	375	0
Other Dung Counts	125	360	96	0
Informed Guesses	414	0	658	308
Other Guesses	0	0	0	2,631
Totals 2006	7,487	735	1,129	2,939

Interpretation of Changes in Estimates from Previous Report

Cause of Change	Definite	Probable	Possible	Speculative
Repeat Survey	+13	0	0	0
New Population	+30	0	+9	+12
Different Technique	+1,963	-453	-1,732	-485
New Guess	+22	0	+13	-107
Population Lost	0	0	0	-159
Data Degraded	0	0	-200	+181
Totals	+2,029	-453	-1,910	-559

Area of Range Covered by Each Data Category (km²)

Data Category	Known Range	Possible Range	Total Range
Aerial or Ground Total Counts	25,117	3,280	28,397
Direct Sample Counts and Reliable Dung Counts	5,123	0	5,123
Other Dung Counts	8,205	24	8,229
Informed Guesses	52,380	1,267	53,647
Other Guesses	8,075	13,017	21,093
Unassessed Range	26,499	32,557	59,056
Totals	125,399	50,146	175,545

Elephant Estimates

Country	Definite	Probable	Possible	Speculative	Range Area (km²)	% of Regional Range	% of Range Assessed	IQI¹	PFS²
Benin	1,223	0	0	0	13,673	8	51	.51	3
Burkina Faso	4,154	320	520	0	19,872	11	72	.64	2
Côte d'Ivoire	188	152	119	506	33,985	19	72	.25	2
Ghana	789	387	241	12	23,301	13	42	.35	2
Guinea	135	79	79	57	1,524	1	78	.47	4
Guinea Bissau	0	0	7	13	1,346	1	100	.00	3
Liberia	0	0	0	1,676	15,977	9	60	.00	2
Mali	357	0	141	156	31,878	18	100	.55	2
Niger	85	0	17	0	2,683	2	100	.83	3
Nigeria	348	0	105	375	22,968	13	37	.16	2
Senegal	1	0	0	9	1,090	1	100	.10	4
Sierra Leone	0	0	80	135	1,804	1	59	.00	3
Togo	4	0	61	0	5,444	3	69	.04	3
Totals	7,487	735	1,129	2,939	175,545	5	66	.44	3

¹IQI: Information Quality Index: This index quantifies overall data quality at the regional level based on the precision of estimates and the proportion of assessed elephant range (i.e. range for which estimates are available). The IQI ranges from zero (no reliable information) to one (perfect information).

²PFS: 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.