We sampled 15 individuals along a random transect with a length proportional to each fragment size (i.e. 225 individuals across fragments). The individuals sampled represent the relative abundances of the plant species in each fragment. Fungal DNA was extracted of the roots of each plant individual. All analyses were performed in the free software environment R version 3.5.2. R Core Team, R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. 2013, (2015)., R code (R v. 3.5.2) to perform the simulations to assess whether the rewiring of mycorrhizae interactions is phylogenetically conserved (i.e. the non-preferred hosts tend to be close relatives to the preferred hosts)., Impacto de la fragmentación del hábitat en la diversidad de hongos MA en ecosistemas de yesos como indicador de vulnerabilidad al cambio climático (CGL2013-42312-R), Peer reviewed