Fire and herbivory are major drivers in tropical savanna ecosystems and they selected a flora composed of species able to cope with recurrent aboveground biomass removal. Renewal of the herbaceous stratum is made possible by resprouting, mostly through a belowground bud bank. Evaluating the impacts of disturbances on the bud bank can assist in predicting post-disturbance responses and system resilience. In a semi-arid savanna, we aimed to verify whether lower fire frequency, fire and herbivory exclusion could affect belowground bud bank and organs diversity and consequently, the resprouting potential. Lower fire frequency or suppression and absence of herbivory were expected to reduce the bud bank density, which was confirmed by our results. If the fire is suppressed or fire frequency is reduced, the total, graminoid and the shrub bud bank decreased, whereas herbivory exclusion resulted in total and a forb bud bank of lower densities. Belowground buds were identified in non-woody and woody rhizomes, stolons, root crowns, and bulbs or corms. Despite having bud banks of lower density, disturbance exclusion promoted belowground biomass accumulation. Our results indicated the importance of maintaining the endogenous disturbances to the preservation of the belowground community and regeneration strategy, guaranteeing resilience in semi-arid savanna communities.

火和食草是热带稀树草原生态系统的主要驱动力，他们选择了一个由能够应对经常发生的地上生物量去除的物种组成的植物群。草本层的更新是通过重新发芽来实现的，主要是通过地下芽库。评估扰动对芽库的影响有助于预测扰动后的响应和系统恢复力。在半干旱的稀树草原中，我们旨在验证较低的火灾频率、火灾和草食性排斥是否会影响地下芽库和器官多样性，从而影响重新发芽的潜力。预计较低的火灾频率或抑制以及没有食草动物会降低芽库密度，我们的结果证实了这一点。如果火灾被扑灭或火灾频率降低，总的，禾本科和灌木芽库减少，而草食性排斥导致总和较低密度的杂草芽库。在非木质和木质根茎、匍匐茎、根冠、鳞茎或球茎中发现了地下​​芽。尽管具有较低密度的芽库，干扰排除促进了地下生物量的积累。我们的结果表明维持内源性干扰对保护地下群落和再生策略的重要性，保证半干旱稀树草原群落的恢复力。干扰排除促进地下生物量积累。我们的结果表明维持内源性干扰对保护地下群落和再生策略的重要性，保证半干旱稀树草原群落的恢复力。干扰排除促进地下生物量积累。我们的结果表明维持内源性干扰对保护地下群落和再生策略的重要性，保证半干旱稀树草原群落的恢复力。