YEAR: calendar year HABITAT: A = alpine; M = moorland SITE: site (after pooling count sites in contiguous 1km squares), numbered 1-60 (note that site 24 is missing as this did not meet minimum data requirements for analysis) HARES: raw count of mountain hares NORTHING, EASTING: each calculated as mean of all component 1km squares, except for site 1 which is a mean location of all the Cairngorms peaks taken in by this high-alpine transect AREA: site area measured in hectares. BURNFOREST: numerical code (0,1,2,3) to describe sites according to presence or absence of strip burning for grouse management and/or conifer plantations in the local landscape (see paper for details). Note that this variable was only used for analyses of trends on moorland sites. BPA: numerical code (0,1) to describe sites according to presence of strip burning for grouse management in the local landscape (see paper for details). Note that this variable was only used for analyses of trends on alpine sites. Supplementary Information The number of original count sites in contiguous 1km squares (in parentheses) that were pooled to create the composite sites used in data analysis is as follows: Alpine sites: 1(1); 2(2); 3(3); 5(7); 6(2); 10(2); 11(2); 25(1); 26(1); 27(2); 28(1); 31(1); 32(1); 44(1); 50(1); 51(1); 60(1) Moorland sites: 4(2); 7(3); 8(3); 9(2); 10(2); 12(7); 13(2); 14(4); 15(2); 16(19); 17(5); 18(2); 19(2); 20(1); 21(1); 22(1); 23(1); 29(1); 30(1); 33(2); 34(1); 35(1); 36(1); 37(1); 38(1); 39(1); 40(1); 41(1); 42(1); 43(1); 45(1); 46(1); 47(1); 48(1); 49(1); 52(1); 53(1); 54(1); 55(1); 56(1); 57(1); 58(1); 59(1)