oa Madoqua - Bias in aerial censuses of elephants in Etosha National Park, Namibia
|Article Title||Bias in aerial censuses of elephants in Etosha National Park, Namibia|
|© Publisher:||Namibian Ministry of Environment and Tourism|
|Affiliations||1 Ministry of Environment and Tourism, Windhoek, Namibia|
|Publication Date||Jan 1997|
|Pages||143 - 147|
|Keyword(s)||Accuracy, Binomial model, Calibrated barometric aircraft altimeter, Elephant counting technique, Logistical constraints, Low-intensity elephant censuses, Mark resighting, Multi-species censuses, Pennycuick's shadowmeter, Photographic counts, Topographical map and Transect width|
Experimental counts of elephants in Etosha National Park wereused to estimate the bias associated with low intensity counting methods developed for this species. Repeated counting of the same area showed that precise population estimates can be obtained from the method used, and that elephants react to survey aircraft by breaking up into smaller groups.
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