readme.txt All files are MATLAB "m". These files relate to the fitting and testing of a boundary shift over two time periods for any given species. The main file is: mainBootStrapping.m - it need to be run with 2 arguments. the species name and the threshold value mu referenced in the manuscript this file calls 3 others: sub_ReadData.m - reads in data. this must be rewritten by user to read in new data sub_SimData.m - simulates data for the bootstrapping test. main2Times.m - fits the data to obtain the test statistic main2Times.m calls 4 files: sub_Opt1.m - fits 3 parameter model for each time period. sub_OptNull - fits 5 parameter under the null U1=U2 sub_OptAlt - fits 6 parameter under the alt under the constraint U1