Supplementary Material for 'A citation-based map of concepts in invasion biology' by Martin Enders, Frank Havemann, Jonathan M. Jeschke Please read this file first. The scripts are for the R statistical environment and were created in Version 3.1.0. y.papers.1518.RObj are the years of the citing papers. y.key.31.RObj are the years of the 31 key hypotheses we defined. P.31.1999-2017.RObj are the significant links made following Marshakova (1973). hypos.network.R is the script we used for the publication. hypo.labels.31.RObj are the labels for the key hypotheses. cc.31.RObj are the coordinates for the network. C.31.1999-2017.RObj contains the co-citation numbers of the key hypotheses from 1999 to 2017.