Data and code from: Effects of prescribed fire on plant α- and ꞵ-diversity and the regulating role of soil in a mesquite-oak savanna

This dataset supports spatial ecological analysis of plant diversity patterns in response to fire disturbance within a mesquite-oak savanna ecosystem. The dataset comprises 288 systematically collected quadrat samples (1-m²) stratified across three soil series types (TA: 120 quadrats, VaB: 120 quadrats, KaB: 48 quadrats) with pre-fire (September-December 2018) and post-fire (September-December 2019) temporal comparisons. Each observation includes spatial coordinates, binary fire treatment status, and comprehensive diversity metrics encompassing three alpha diversity measures (Shannon diversity, species richness, and evenness) and six beta diversity indices, including both incidence-based measures (Sørensen dissimilarity and its turnover and nestedness components) and abundance-based measures (Bray-Curtis dissimilarity and its balanced variation and abundance gradient components).