Supplement 1. Data matrices and source codes of the software used in the paper. UlrichWerner J. GotelliNicholas 2016 <h2>File List</h2><blockquote> <p><a href="Matrices.txt">Matrices.txt</a></p> <p><a href="SourceCodes.txt">SourceCodes.txt</a></p> </blockquote><h2>Description</h2><blockquote> <p>Matrices.txt contains raw data and references to 185 real abundance matrices used in the present paper. SourceCodes.txt consists of source code of Matrix.exe and CoOcurrence.exe. </p> </blockquote>