Sierra Leone, 2007

All Years for Sierra Leone: 2016 — 2013 — 2007 — 2002 — 1998 — 1995

2007 Summary Totals for Sierra Leone

Data Category	Possible	Speculative
Informed Guesses	80	20
Other Guesses	0	115
Totals 2006	80	135

Interpretation of Changes in Estimates from Previous Report

Cause of Change	Possible	Speculative
New Guess	+80	-30
Data Degraded	-5	-40
Totals	+75	-70

Area of Range Covered by Each Data Category (km²)

Data Category	Known Range	Possible Range	Total Range
Informed Guesses	358	0	358
Other Guesses	349	356	705
Unassessed Range	265	476	742
Totals	972	832	1,804

Sierra Leone : 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.
Bagbe River Forest	DD	IG3	E	1995	5	45*	A. Kortenhoven, pers. comm., 2002	1	349	11.1W	9.3N
Gola East Forest Reserve	-	OG3	E	1987	60		Grubb et al., 1998	1	287	11.1W	7.4N
Gola North Forest Reserve	-	OG3	E	1987	50		Grubb et al., 1998	1	242	10.9W	7.6N
Outamba-Kilimi	NG	IG3	D	2006	80	20*	A. Nandjui & E.K.A. Danquah, pers. comm., 2006	1	358	12.1W	9.7N

* 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.