Files containing the source data and analyses used in the manuscript "Phosphite as an Engineered Niche for Pseudomonas veronii in a Synthetic Soil Bacterial Community". Clara Bailey (1), Philip Gwyther (2), Senka Čaušević (2), Brandon L. Greene (1), and Jan Roelof van der Meer (2) 1) Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California, United States 2) Department of Fundamental Microbiology, University of Lausanne, Lausanne, Switzerland This dataset contains 16S rRNA gene amplicon sequencing data (in the form of an abundance table, "abund.csv" and combined with CFU counts in "abund_cfu.csv"), toluene quantification data, and CFU counts. All data analysis, statistical tests, and generated figures are contained in the relevant .R script. Refer to README files for data tables as well as the README section at the header of the R script. The dataset has been updated from version 1 to include manuscript revisions, and updated calculations and figures.