This file contains genotypic and location data for Blanding's turtles (Emydoidea blandingii) included in this study ("Genetic effects of landscape, habitat preference, and demography on three co-occurring turtle species"). As Blanding's turtle is an endangered species and there are significant concerns associated with potential overcollecting of this species from the wild, coordinates have been rounded to one decimal place in accord with standard procedures (Chapman AD and Grafton O (2008) Guide to best practices for generalising primary species-occurrence data, version 1.0. Copenhagen: Global Biodiversity Information Facility, 27 pp. ISBN: 87-92020-02-2). Data is formatted for use in Program TESS (similar to Structure format with the addition of location information). Column 1: Individual ID. Column 2: Population identifier, with numbers corresponding to sampling site codes listed in the paper. 1 = SH 2 = MU 3 = WD 4 = MC 5 = CM 6 = FT 7 = GB 8 = KM 9 = AL 10 = MN 11 = EC 12 = MR 13 = CL 14 = NA 15 = FC 16 = MZ 17 = BR 18 = LR 19 = LK 20 = DO 21 = CR 34 = KE Column 3: Longitude Column 4: Latitude Columns 5-33: Diploid genotypic data, presented as length in base pairs of each allele. Missing data is coded as "-999". Microsatellite loci (see paper for references): GmuD70 (columns 5-6), GmuD88 (7-8), Eb17 (9-10), GmuD87 (11-12), GmuD16 (13-14), GmuD62 (15-16), GmuD90 (17-18), GmuD121 (19-20), Cp2 (21-22), GmuD55 (23-24), BTCA9 (25-26), Eb19 (27-28), Eb09 (29-30), GmuD93 (31-32).