Seasonal dynamics in terrestrial insect communities after the impact of the Brumadinho Tailings Dam Disaster

This dataset contains species richness, Sorensen dissimilarity and its components of species turnover (total and proportional) and nestedness-resultant (total and proportional) data for five groups of insects (ants, bees, butterflies, dung beetles, and termites) sampled in 20 sites across three habitat categories: legally protected areas (PRO), reference sites (REF), and forest fragments adjacent to the mudflow (MUD), conducted in the municipality of Brumadinho, Minas Gerais State, southeastern Brazil. The region gained international attention following the collapse of a tailings dam on 25 January 2019, owned by the Brazilian mining company Vale S.A. The original vegetation of the region was predominantly Atlantic Forest, mainly composed of semideciduous forests, with patches of savanna and rocky-shrubby vegetation at higher altitudes, owing to its location near the transition zone between the Atlantic Forest and Cerrado biomes. Eight sites were in legally protected areas (PRO), with wh..., We sampled six sites in areas adjacent to the mudflow (MUD), within the Ferro-Carvão stream subbasin, which was the area where the mudflow affected secondary forest patches that were directly impacted by the tailings flow, as it removed part of their areas and at least marginally invaded their interior, which we refer to as mud-adjacent sites. Our first sampling campaign was conducted in January 2021, two years after the event. We sampled the areas every three months, totaling nine expeditions and covering two years (2021 – 2023) of sampling effort. Insect sampling was standardized using 400 m transects at each site for all campaigns. We positioned traps in designated areas specific to target taxa (ants, dung beetles, bees, butterflies, and termites) along each transect. For ants, we deployed 10 non-baited pitfall traps at 40 m intervals along each transect, each trap comprising a 9 cm deep, 15 cm diameter container filled with a 250 ml saline-detergent solution (5 % salt, 5 % detergent..., # Title of Dataset: Dataset_Brumadinho_Dam_Failure.csv

## Description of the Data and file structure

This .csv type dataset provides the response variables (species richness, Sorensen dissimilarity and its species turnover and nestedness-resultant components) of five insect groups (ants, bees, butterflies, dung beetles, and termites) sampled in 20 sites across three habitat categories: legally protected areas (PRO), reference sites (REF), and forest fragments adjacent to the mudflow (MUD), conducted in the municipality of Brumadinho, Minas Gerais State, southeastern Brazil, after the 2019 dam collapse.
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