Appendices.

Further detail on laboratory and statistical procedures. Table I, Landscape descriptor codes used to record landscape description in the field. Figure A, Normalised log proportion of occupied burrows for each of the landscape descriptions, in rank order. Figure B, Frequency of single letter landscape descriptor codes across 3 groups of proportion of occupied burrows. Figure C, Median flea index associated with burrows possessing each of the unique landscape descriptors where a flea index had been recorded. Figure D, Frequency of each of the landscape code across three strata of flea index scores. Table II, Landscape descriptor codes included in predictive factors. Figure E, Predicted proportion of seasons occupied for burrows with and without dunes or clay, and combinations thereof. Figure F, Plots showing coefficient estimates and P values for the model using the sector and burrow random effects and for the iterative model using sector random effects but random samples of burrows. Figure G, Plots showing coefficient estimates and P values for the model using the sector and burrow random effects and for the iterative model using sector random effects but random samples of burrows. Figure H, Flea index and tick index scores, with predictions from the minimal model. (DOCX)