A meta-analysis of bees' responses to anthropogenic disturbance.
A meta-analysis of bees' responses to anthropogenic disturbance.
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DOI：
10.1890/08-1245.1
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发表时间：
2009-08
期刊：
影响因子：
4.8
通讯作者：
R. Winfree;R. Aguilar;D. Vázquez;G. LeBuhn;M. Aizen
中科院分区：
文献类型：
--
作者：
R. Winfree;R. Aguilar;D. Vázquez;G. LeBuhn;M. Aizen
传粉者可能在全球范围内减少，这是一个令人担忧的问题，因为世界上大多数植物物种都需要动物授粉，包括许多农作物。人类对土地的利用和自然栖息地的丧失被认为是野生本地传粉者数量下降的重要驱动因素，但已发表的关于这一主题的研究结果从未得到定量的综合。在这里，我们使用荟萃分析来综合有关蜜蜂这一最重要的传粉者群体如何受到人类干扰的文献，如栖息地丧失、放牧、伐木和农业。我们从54项已发表的研究中获得了130个效应大小，这些研究记录了蜜蜂数量和/或物种丰富度作为人类干扰的函数。干扰对蜜蜂丰度和物种丰富度均有显著的负向影响。然而，影响的程度并不大。此外，唯一显示出显著负面影响的干扰类型--栖息地丧失和碎片化--只有在自然栖息地仅存很少的系统中才具有统计意义。因此，在不首先评估现有研究代表全球生态系统状况的程度之前，就得出栖息地丧失导致全球传粉者减少的结论还为时过早。考虑到对土地利用变化的预测，未来传粉者的减少似乎是可能的。
Pollinators may be declining globally, a matter of concern because animal pollination is required by most of the world's plant species, including many crop plants. Human land use and the loss of native habitats is thought to be an important driver of decline for wild, native pollinators, yet the findings of published studies on this topic have never been quantitatively synthesized. Here we use meta-analysis to synthesize the literature on how bees, the most important group of pollinators, are affected by human disturbances such as habitat loss, grazing, logging, and agriculture. We obtained 130 effect sizes from 54 published studies recording bee abundance and/or species richness as a function of human disturbance. Both bee abundance and species richness were significantly, negatively affected by disturbance. However, the magnitude of the effects was not large. Furthermore, the only disturbance type showing a significant negative effect, habitat loss and fragmentation, was statistically significant only in systems where very little natural habitat remains. Therefore, it would be premature to draw conclusions about habitat loss having caused global pollinator decline without first assessing the extent to which the existing studies represent the status of global ecosystems. Future pollinator declines seem likely given forecasts of increasing land-use change.