Missing in action: species competition is a neglected predictor variable in Species Distribution Modelling _Raw_Data

Presence data for buffalo (n = 93), warthog (n = 27), waterbuck (n =21), wildebeest (n = 24) and zebra (n =44) were collected via an aerial survey conducted in Gonarezhou National Park in October 2013. The aerial survey was a sample with transects spaced at 1.5 km and 2.5 km depending on animal density within sampling strata. A Cessna 185 fixed wing plane was used and two observers sitting at the right and left sides of the plane observed animals within strips of width 150 m. The observers searched for animals between two streamers fitted to the wing struts of the plane during pre-calibration flights in such a way that the search strip on the ground was 150 m wide. Each time animals were sighted, the location of the sighting was marked using a handheld GPS device (GPSmap 296, Garmin international). A full description of the method is provided in 'Norton-Griffiths M (1978) Counting animals. Handbooks on techniques currently used in African wildlife ecology. African Wildlife Leadership Foundation, Nairobi'.