The stingless bees of the genus Melipona play an important role as pollinators of wild and cultivated plants in the Neotropics, contributing to forest maintenance and food production. Similar to other bees, meliponids are threatened by anthropogenic impacts on the environment, such as habitat conversion and climate change. Here, we apply ecological niche models to estimate the habitat suitability for ten stingless bee species from Brazil. We quantify the impacts of land use change and climate change on their distribution. Additionally, we assess the efficiency of the Brazilian protected areas (PAs) for the conservation of these species. We found that the predicted species range increased in agricultural lands and decreased in natural vegetation between 2000 and 2014. Our models predict that seven species will face a reduction and three species an increase in their suitable habitat in the coming years. The Brazilian PAs fail in safeguarding the majority of climatically suitable habitats for the stingless bee species studied. Our findings suggest that land use and climate change pose a serious risk for the conservation of stingless bees and their pollination services in Brazil.

属的无刺蜂Melipona作为新热带地区野生和栽培植物的传粉者，发挥了重要作用，为森林维护和粮食生产做出了贡献。与其他蜜蜂类似，类人甲也受到人为环境的影响，例如栖息地转换和气候变化。在这里，我们应用生态位模型来估计来自巴西的十种无刺蜂物种的栖息地适宜性。我们量化了土地利用变化和气候变化对其分布的影响。此外，我们评估了巴西保护区（PA）保护这些物种的效率。我们发现，在2000年至2014年之间，预测的物种范围在农业用地中有所增加，而在自然植被中却有所减少。我们的模型预测，在未来几年中，七个物种的适宜生境将面临减少，而三个物种则将增加。巴西的保护区未能保障所研究的无刺蜂物种的大多数气候适宜生境。我们的发现表明，土地利用和气候变化对巴西无less蜜蜂及其授粉服务的保护构成了严重风险。