Regeneration after fire in campo rupestre: Short- and long-term vegetation dynamics

摘要: The Cerrado (Brazilian savanna) is the second largest biome in Brazil, covering 22% of country, and campo rupestre one most biodiverse ecosystem. Campo are extremely old mountaintop tropical ecosystems, composed a mosaic herbaceous, shrubland savanna vegetation, generally located above 900 m sea level characterized by shallow, acidic nutrient-poor soils. In context increased land-use changes, effective conservation management projects appear necessary to guarantee these ecosystems. Although fire natural disturbance rupestre, effects on vegetation dynamics remain poorly understood. Our objective was assess recovery plant composition both short- long-term main herbaceous types: sandy stony grasslands. We monitored community before after wildfire order short-term recovery. Diachronic analyses grasslands burnt at various dates were used understand dynamics. results highlighted rapid wildfires, suggesting high adaptation communities. did not find significant variation species richness according time fire, whereas higher observed recently No change response highlighted, probably due heterogeneity this After biomass gradually over types. High accumulation could lead stronger fires. Further studies relationship between intensity set up adapted strategies conserve biodiversity.