Cameroon, 2007

All Years for Cameroon: 2016 — 2013 — 2007 — 2002 — 1998 — 1995

2007 Summary Totals for Cameroon

Data Category	Definite	Probable	Possible	Speculative
Other Dung Counts	0	726	295	0
Informed Guesses	179	0	4,670	1,320
Other Guesses	0	0	0	8,197
Totals 2006	179	726	4,965	9,517

Interpretation of Changes in Estimates from Previous Report

Cause of Change	Definite	Probable	Possible	Speculative
Repeat Survey	0	-368	+219	0
New Population	0	0	+1,405	+345
Different Technique	0	+178	+147	-157
New Guess	+175	0	-2,212	+1,025
Data Degraded	-2,002	-2,142	-3,610	+5,144
Totals	-1,827	-2,332	-4,052	+6,357

Area of Range Covered by Each Data Category (km²)

Data Category	Known Range	Possible Range	Total Range
Other Dung Counts	1,503	0	1,503
Informed Guesses	7,767	734	8,501
Other Guesses	17,269	26,597	43,865
Unassessed Range	31,842	32,860	64,702
Totals	58,381	60,190	118,571

Cameroon : Elephant Estimates

	Cause of	Survey Details²			Number of Elephants				Area	Map Location
Input Zone	Change¹	Type	Reliab.	Year	Estimate	95% C.L.	Source	PFS³	(km²)	Lon.	Lat.
Abong-Mbang Forest Reserve	-	OG3	E	1994	100		A. Ekobo, pers. comm., 1994	2	1,540	13.1E	4.2N
Bayang-Mbo Wildlife Sanctuary	RS	DC2	D	2001	457		Bechem & Nchanji, 2001	3	662	9.6E	5.3N
Benoué National Park	-	IG3	E	1991	540		DFPN, 1991	2	1,800	13.8E	8.3N
Bouba Ndjidah National Park	-	IG3	E	1991	660		DFPN, 1991	2	2,200	14.7E	8.6N
Boumba-Bek National Park	NG	IG3	D	2004	318		Blake, 2005	2	2,383	15.0E	2.7N
Campo (South) National Park	-	DC2	C	2001	548	255	Bekhuis & Prins, 2003	3	648	10.1E	2.3N
Dja Faunal Reserve	DD	IG3	E	1995	1,500	500*	M.N. Tchamba, pers. comm., 1995	2	5,260	13.0E	3.1N
Faro National Park	-	IG3	E	1991	60		Tchamba, 1993	2	3,300	12.7E	8.2N
Korup National Park	DD	DC3	E	1993	425	271	Powell, quest. reply, 1993	2	1,259	9.0E	5.2N
Lobéké National Park	DD	DC2	E	1993	3,719	2,125	Ekobo, 1995	2	1,985	15.9E	2.3N
Ma'an Region	-	IG3	D	2000	4	10*	Matthews & Matthews, 2000	3	654	10.4E	2.3N
Mengame Wildlife Sanctuary	NP	IG3	D	2003	1,354	269	Halford et al., 2003	2	1,425	12.3E	2.3N
Mongokele Forest Reserve	-	DC2	E	1991	773	53	A. Ekobo, pers. comm., 1994	3	850	16.0E	2.0N
Mt. Cameroon	DT	DC3	C	2003	178	148	Ekobo, 2003	3	676	9.2E	4.2N
Nki Forest Reserve	-	DC3	D	1998	2,178		A. Ekobo, pers. comm., 1998	2	1,815	14.5E	2.4N
Sudanian Area	-	IG3	E	1991	360		DFPN, 1991	1	24,985	13.7E	8.3N
Waza National Park	NG	IG3	D	2002	475	1025*	Saleh et al., 2002	2	1,700	14.7E	11.3N
Yabassi Area	NP	IG3	D	2002	63		WWF Cameroon, 2003	2	2,425	10.3E	4.5N
Yoko Area	NP	OG3	E	1999	60		T. Sánchez Ariño, pers. comm., 2004	4	25	12.4E	5.6N

* 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.