Botswana, 2007

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

2007 Summary Totals for Botswana

Data Category	Definite	Probable	Possible	Speculative
Direct Sample Counts and Reliable Dung Counts	133,829	20,829	20,829	0
Totals 2006	133,829	20,829	20,829	0

Interpretation of Changes in Estimates from Previous Report

Cause of Change	Definite	Probable	Possible
Repeat Survey	+34,128	+643	+643
Different Technique	-928	-1,051	-1,051
Totals	+33,200	-408	-408

Area of Range Covered by Each Data Category (km²)

Data Category	Known Range	Possible Range	Total Range
Direct Sample Counts and Reliable Dung Counts	88,352	11,190	99,543
Unassessed Range	722	0	722
Totals	89,075	11,190	100,265

Botswana : 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.
Chobe National Park & Environs	RS	AS2	B	2006	40,767	10,539	DWNP, 2006	2	12,195	24.6E	18.5S
Nxai Pan & Makgadikgadi National Parks	RS	AS3	B	2006	1,436	1,950	DWNP, 2006	2	11,476	24.8E	20.4S
Okavango Delta	RS	AS2	B	2006	31,191	7,191	DWNP, 2006	2	17,160	23.1E	19.4S
Rest of Northern Botswana	RS	AS2	B	2006	80,226	16,334	DWNP, 2006	1	118,303	23.5E	19.7S
Tuli Game Reserve	DT	AS2	B	2006	1,038	685	DWNP, 2006	2	3,510	29.1E	22.2S

* 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.