2007 Regional Totals for Central Africa

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

2007 Summary Totals for Central Africa

Data Category	Definite	Probable	Possible	Speculative
Aerial or Ground Total Counts	3,885	0	0	0
Direct Sample Counts and Reliable Dung Counts	6,166	4,260	4,260	0
Other Dung Counts	0	44,676	8,775	0
Informed Guesses	332	0	30,063	4,105
Other Guesses	0	0	0	30,024
Totals 2006	10,383	48,936	43,098	34,129

Interpretation of Changes in Estimates from Previous Report

Cause of Change	Definite	Probable	Possible	Speculative
Repeat Survey	+548	+1,431	+1,768	0
New Population	0	0	+2,210	+1,376
Different Technique	-3,130	+29,895	+3,641	-5,239
Different Area	-1,130	-10,826	-4,363	0
New Guess	-171	-1,645	-11,848	-4,749
New Analysis	-21	+20	-9,536	-44,862
Data Degraded	-2,163	-2,202	-3,250	+5,040
Totals	-6,067	+16,673	-21,379	-48,434

Area of Range Covered by Each Data Category (km²)

Data Category	Known Range	Possible Range	Total Range
Aerial or Ground Total Counts	3,151	0	3,151
Direct Sample Counts and Reliable Dung Counts	62,012	1,800	63,812
Other Dung Counts	71,491	0	71,491
Informed Guesses	77,576	1,816	79,392
Other Guesses	258,652	27,890	286,542
Unassessed Range	323,430	147,263	470,693
Totals	796,310	178,769	975,079

Elephant Estimates

Country	Definite	Probable	Possible	Speculative	Range Area (km²)	% of Regional Range	% of Range Assessed	IQI¹	PFS²
Cameroon	179	726	4,965	9,517	118,571	12	45	.03	1
Central African Republic	109	1,689	1,036	500	73,453	8	95	.51	2
Chad	3,885	0	2,000	550	149,443	15	26	.15	1
Congo	402	16,947	4,024	729	135,918	14	23	.18	1
Democratic Republic of Congo	2,447	7,955	8,855	4,457	263,700	27	40	.18	1
Equatorial Guinea	0	0	700	630	15,008	2	13	.00	2
Gabon	1,523	23,457	27,911	17,746	218,985	22	94	.33	1
Totals	10,383	48,936	43,098	34,129	975,079	29	52	.22	1

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.