Biodiversity 1 Biodiversity loss 1 Community stability 1 Complementarity effect Disturbance 1 Drought 1 Drought resistance 1 Indicator indicator 1 Pilot plants 1 Plant communities 1 Selection effect 1 Soil moisture 1 Soil water content 1 Species evenness 1 Species richness 1 biodiversity 1 complementarity 1 disturbance 1 drought 1 drought resistance 1 plant community 1 species evenness 1 species richness 1