Journal Article MODIS burned-area product Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Review biodiversity surveillance ciencia ciudadana citizen science farmland abandonment fire disturbance grasslands grazing intensity livestock megadiverse countries países megadiversos population trends pyric herbivory sesgo taxonómico taxonomic bias tendencias poblacionales vigilancia de la biodiversidad 公民科学 生物多样性监测 种群趋势 类群偏倚 高生物多样性的国家