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'.