Algeria 1 Algerian steppe 1 Algerian steppes 1 Asteraceae 1 Biodiversity 1 Ecosystems 1 Extrapolation 1 Fabaceae 1 Land degradation 1 Phylogenetic diversity 1 Plant biodiversity 1 Plant communities 1 Plant community 1 Plant diversity 1 Sampling effort 1 Sampling efforts 1 Semi arid 1 Semi-arid rangeland 1 Semi-arid rangelands 1 Stipa tenacissima Taxonomic diversity 1 Vegetation 1 bedrock 1 biodiversity 1 environmental factor 1 phylogenetics 1 plant community 1 rangeland 1 semiarid region 1 species diversity 1