Nexus tree file for mcmcGLMM analyses in R. This tree was used with the data file "LaydateYr_23Jan13.txt" to conduct the analyses shown in Table 4 of the paper. Note that slightly different trees were used for some other analyses. The g in the file name indicates that we used Grafen's method to construct branch lengths. There are 172 studies in the file; multiple studies of the same species were coded as A, B, C, etc. in the phylogen
