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Agricultural area losses and pollinator mismatch due to climate changes endanger passion fruit production in the Neotropics

机译:由于气候变化导致的农业面积损失和粉碎机不匹配危及新生儿的激情果实产量

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Pollinator diversity and abundance are declining in the agricultural landscapes of some parts of the world along with the pollination services they provide. Among an array of reasons, climate change has been pointed out as a major player and studies suggest strong negative impacts on agricultural pollination toward the end of the 21st century. In this study, we investigated for the first time the concomitant effect of climate changes on a tropical crop, passion fruit (Passiflora edulis), and its two main pollinator bee species (Xylocopa frontalis and X. grisescens) in the Neotropics considering two of the IPCC environmental scenarios, RCP 4.5; RCP 8.5 (Representative Concentration Pathways), and in the years 2060 and 2080. We have shown that the climate changes may lead to changes in the natural ranges of Xylocopa bees, with considerable loss of habitable area (X. frontalis, RCP 4.5 = -27.3 to -15.4%; RCP 8.5 = -57.7 to -47.9%; X grisescens, RCP 4.5 = -15.4 to -27.81%; RCP 8.5 = -23.5 to -35.3%), as well as for cropping passion fruit (RCP 4.5 = -44. 9 to -51.3%; RCP 8.5 = -42.9 to -64.8%), for years 2060 and 2080, respectively. We also predicted a potential reduction between 31.9% and 54.9% in the overlapping of the remaining suitable areas for the bees and passion fruit, increasing the potential spatial mismatch between the crop and its pollinators. Based on the models forecast of climate changes, we conclude that the suitable areas to co-occurrence of passion fruit crop and its effective pollinators will be largely affected in the Neotropics and steps to mitigate the effects of the climate changes should be taken to ensure viable population of pollinators in the remaining suitable areas for both bees and the crop.
机译:粉丝器多样性和丰富正在世界某些地区的农业景观以及他们提供的授粉服务以及授粉服务。在一系列原因中,作为一个主要的球员和研究表明,气候变化表明对21世纪末对农业授粉的强烈负面影响。在这项研究中,我们首次调查了气候变化对热带作物,激情水果(Passiflora Edulis)的伴随效果及其两种主要的花粉师蜂(Xylocopa Frontalis和X. GriseScens)考虑到其中两个IPCC环境情景,RCP 4.5; RCP 8.5(代表浓度途径),以及2060年代和2080年。我们已经表明,气候变化可能导致Xylocopa蜜蜂的自然范围的变化,具有相当大的居住区(X.Prontralis,RCP 4.5 = - 27.3至-15.4%; RCP 8.5 = -57.7至-47.9%; x GRISESCENS,RCP 4.5 = -15.4至-27.81%; RCP 8.5 = -23.5至-35.3%),以及种植激情果(RCP 4.5 = -44.9至-51.3%; RCP 8.5 = -42.9至-64.8%),分别为2060和2080。我们还预测了蜜蜂和激情果实的剩余合适区域的重叠潜在降低了31.9%和54.9%,从而增加了作物与其粉丝器之间的潜在的空间不匹配。根据气候变化的模型预测,我们得出结论,共同发生激情果实作物及其有效粉碎机的合适区域将在很大程度上受到探测器的影响,减轻气候变化的影响应采取措施,以确保可行蜜蜂和作物剩余合适的地区粉碎机群体。

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