%0 Journal Article %T Increasing aridity reduces soil microbial diversity and abundance in global drylands %A Fernando T. Maestre %A Manuel Delgado-Baquerizo %A Thomas C. Jeffries %A Farzam, Mohammad %A Naseri, Kamal %A Brajesh K. Singh %J Proceedings of the National Academy of Sciences of the United States %@ 0027-8424 %D 2015