A large proportion of ephemeral plants in the zonal communities of the desert and deserted freegana and pronounced weather fluctuations lead to very strong fluctuation and seasonal variability in the composition of phytocenoses. A comparative analysis of plant communities under these conditions is possible only by the abundance of ecological and phytocenotic groups of species. Successful monitoring in deserted communities is possible with the ability to identify dead plant remains. The optimal monitoring period in the arid regions of the Mediterranean is from mid-March to the end of the first decade of April.