Democratic Republic of Congo, 2007

All Years for Democratic Republic of Congo: 2016 — 2013 — 2007 — 2002 — 1998 — 1995

2007 Summary Totals for Democratic Republic of Congo

Data Category	Definite	Probable	Possible	Speculative
Direct Sample Counts and Reliable Dung Counts	2,294	4,081	4,081	0
Other Dung Counts	0	3,874	1,516	0
Informed Guesses	153	0	3,258	207
Other Guesses	0	0	0	4,250
Totals 2006	2,447	7,955	8,855	4,457

Interpretation of Changes in Estimates from Previous Report

Cause of Change	Definite	Probable	Possible	Speculative
Repeat Survey	-1,682	+2,123	+1,508	0
New Population	0	0	+37	0
Different Technique	0	+1,430	-10,118	-2,323
Different Area	-3,111	+1,748	+94	0
New Guess	-403	0	-8,505	-5,920
New Analysis	-23	+23	-9,157	-4,854
Totals	-5,220	+5,324	-26,141	-13,097

Area of Range Covered by Each Data Category (km²)

Data Category	Known Range	Possible Range	Total Range
Direct Sample Counts and Reliable Dung Counts	1,402	1,455	2,857
Other Dung Counts	29,959	0	29,959
Informed Guesses	10,665	949	11,614
Other Guesses	59,610	1,290	60,900
Unassessed Range	121,100	37,269	158,369
Totals	222,736	40,964	263,700

Democratic Republic of Congo : 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.
Bushimae	-	IG3	E	1987	120		Won wa Musiti, quest. reply, 1991	2	5,232	23.0E	7.4S
Gangala-na-Bodio	NA	OG3	E	2002	1,000	450*	Hart, 2003	2	9,671	29.3E	3.9N
Garamba National Park	RS	AS3	B	2004	6,354	4,081	Hillman Smith et al., 2006	2	5,525	29.5E	4.2N
Kahuzi-Biega (Upland) National Park	NG	IG3	D	2005	20	30*	Hart, 2006	4	154	28.7E	2.2S
Luama Hunting Zone	NG	OG3	E	2002	110	15*	Mubalama, quest. reply, 2006	2	9,469	28.0E	4.5S
Maiko National Park	NG	IG3	D	2005	3,000		Hart, 2006	2	10,830	27.6E	0.4S
Okapi (Central) Faunal Reserve	DA	DC3	C	2006	2,688	1,348	Grossmann et al., 2006	2	5,600	28.5E	1.5N
Salonga National Park	DT	DC3	C	2004	1,186	692	Blake, 2005	2	22,100	21.2E	2.1S
Salonga (Outside)	NG	OG3	E	2006	2,800		Hart, 2006	2	25,140	21.1E	2.5S
Upemba National Park	NG	OG3	E	2005	145		Mubalama, quest. reply, 2006	2	11,730	26.6E	9.0S
Virunga (Central) National Park Sector	NG	AS2	D	2006	348	177*	Kujirakwinja et al., 2006	3	2,597	29.4E	0.4S
Virunga (Mikeno) National Park	NP	IG3	D	2003	43		Gray, quest. reply, 2005	4	256	29.5E	1.4S
Virunga (North) National Park Sector	NA	AS2	B	2003	21	39	Hillman Smith et al., 2003c	3	1,550	29.8E	0.6N
Virunga (South) National Park Sector	-	OG3	E	2002	75		L.K. Mubalama, pers. comm., 2003	3	1,290	29.2E	1.4S

* 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.