Kruger National Park ecological aerial survey data (1998-2012)

From the late 1970's the KNP made use of aerial surveys to estimate ungulate populations in the KNP. In the beginning the entire KNP was subdivided in smaller blocks and the entire area was covered. This method was very time and labour intensive, expensive and the estimates had no confidence intervals associated with them. It was also suspected that this technique resulted in an undercount bias. For these reasons in 1997 it was decided to change to a sample count using transects placed from east to west and use the distance statistical method to analyse the data. There was no survey in 2009 or in 2011