Occurrence data for the coffee white stem borer in Zimbabwe obtained from biological surveys

Data collected from biological field surveys done in 2003. The data shows the XY cordinates of coffee farms surveyed and the occurrence of CWB (1 present, 0 absent) The data is in decimal degrees format (WGS84) and unprojected

Map of the study areas showing the districts and coffee zones in Zimbabwe.

<p>The closed and open circles indicate locations where CWB was sampled as present and absent respectively. A context map is given to provide location of the study area in Zimbabwe.</p

Probability of occurrence of CWB that determines its distribution surface in the four Districts.

<p><a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0073432#pone-0073432-g002" target="_blank">Figure 2(a)</a> shows the probability of CWB occurrence for each area obtained from BRT model. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0073432#pone-0073432-g002" target="_blank">Figure 2(b)</a> shows the probability of CWB occurrence for each area obtained from GLM.</p

Environmental layers used for current and predicted climate in the study.

<p>Environmental layers used for current and predicted climate in the study.</p

Comparison of area suitable for CWB for each district as determined by BRT and GLM under current (•) and projected (♦) climatic conditions.

<p>Comparison of area suitable for CWB for each district as determined by BRT and GLM under current (•) and projected (♦) climatic conditions.</p

Distribution of CWB in coffee zones from GLM.

<p><a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0073432#pone-0073432-g004" target="_blank">Figure 4(a)</a> shows the current distribution of CWB from the GLM. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0073432#pone-0073432-g004" target="_blank">Figure 4(b)</a> shows the projected distribution of CWB from the GLM. The red zones are areas with a probability of occurrence above 0.5 indicating CWB is likely to occur and the yellow zones are areas that have a probability below 0.5 indicating CWB is less likely to occur.</p

Evaluation of model performance.

<p>Evaluation of model performance.</p

Distribution of CWB in coffee zones from BRT Model.

<p><a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0073432#pone-0073432-g003" target="_blank">Figure 3(a)</a> shows the current distribution of CWB from the BRT model. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0073432#pone-0073432-g003" target="_blank">Figure 3(b)</a> shows the projected distribution of CWB from the BRT. The red zones are areas with a probability of occurrence above 0.5 indicating CWB is likely to occur and the yellow zones are areas that have a probability below 0.5 indicating CWB is less likely to occur.</p

Relative importance of factors in each model.

<p>Relative importance of factors in each model.</p

Area and percentage change in area suitable for CWB with climate change. The mean is the average of the GLM and BRT models.

<p>Area and percentage change in area suitable for CWB with climate change. The mean is the average of the GLM and BRT models.</p