ReadMe for Data from: Amundrud et al. Dispersal barriers and climate determine the geographic distribution of the helicopter damselfly Mecistogaster modesta. Freshwater Biology. DOI: 10.1111/fwb.13054 2017-11-10 This readme file describes the data files accompanying the above publication. For any further queries please contact amundrud@zoology.ubc.ca, videla.martin@gmail.com, or srivast@zoology.ubc.ca. The following files are included: 1) "Mmodesta_FB.csv" This dataset contains the data used in the above publication. 2) "Mmodesta_FB_variables.csv" This document explains the meaning of the variables in the "Mmodesta_FB.csv" file.