ArcticBuzz: bumblebee community responses to climate change in Lapland

ArcticBuzz：拉普兰大黄蜂群落应对气候变化

• 批准号: 2445781
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2445781
• 关键词: ArcticBuzz; bumblebee; community; responses; climate

Insect pollinator declines are of global concern and understanding the factors driving this trend is a research priority. Yet to date, we still have limited knowledge of how climate change can affect insect pollinator populations. For instance, why have some species shown evidence of latitudinal range shifts in apparent response to climate change when others have not? Addressing these types of questions requires us to understand the mechanisms and processes by which insect pollinator populations are dynamically responding as well as how the structure of plant-pollinator networks respond under climatic variation. This project will study an Arctic bumblebee community and the host plants they visit in Lapland, Sweden. As ectotherms, bumblebee life-histories are mediated by temperature and thus by understanding intra- and interannual population and community turnover we can look to inform predictive models under warming scenarios and identify early warning signs of climate change impacts. Furthermore, this project will reveal the spatio-temporal variation (non-static) in the bumblebee-plant visitation network to reveal how resistant and resilient the mutualistic interaction network is to climate change. The project takes advantage of a unique phenology transect established over a century ago allowing us to compare past data on bumblebee/plant community composition and phenology with contemporary data spanning the major warming over the last four decades. The transect runs along an altitudinal gradient on Mount Nuolja, Abisko, providing a thermal cline with the study taking a space-for-time substitution approach. A number of important questions will be addressed by the student, which can include: i) how preceding and current environmental variables determine population demography and queen turnover; ii) what phenological variation is apparent across years, and how this relates to population and community-level responses; iii) how climatic variation determines floral availability and floral acquisition by bumblebees and whether there is evidence of thermal tracking; iv) how the topology and structure of the mutualistic network responds to climatic variation; v) how population variability in the traits of individuals of a species aggregate determines network structure ; vi) whether we can predict non-random changes to the mutualistic networks by consideration of data on metabolic, phylogenetic and functional trait variation across species.

昆虫传粉者的减少是全球关注的问题，了解推动这一趋势的因素是研究的重点。然而，到目前为止，我们对气候变化如何影响昆虫传粉者种群的了解仍然有限。例如，为什么有些物种在对气候变化的明显反应中表现出纬度范围变化的证据，而其他物种则没有？解决这些类型的问题需要我们了解昆虫传粉者种群动态响应的机制和过程，以及植物-传粉者网络的结构如何在气候变化下响应。 该项目将研究北极熊蜂群落和它们在瑞典拉普兰访问的宿主植物。作为外温动物，大黄蜂的生活史是由温度介导的，因此通过了解年内和年际的种群和群落更替，我们可以在变暖的情况下为预测模型提供信息，并确定气候变化影响的早期预警信号。此外，该项目将揭示大黄蜂-植物访问网络的时空变化（非静态），以揭示互惠互动网络对气候变化的抵抗力和弹性。 该项目利用了一个独特的物候样带建立在一个世纪前，使我们能够比较过去的数据大黄蜂/植物群落组成和物候与当代数据跨越主要变暖在过去的四十年。样带运行沿着海拔梯度的Nuolja山，阿比斯科，提供了一个热跃层的研究，采取了空间换时间的替代方法。学生将讨论一些重要的问题，其中包括：i）以前和当前的环境变量如何决定人口统计和女王周转; ii）多年来明显的物候变化，以及这与人口和社区水平的反应有何关系; iii）气候变化如何决定花卉的可用性和熊蜂的花卉收购以及是否有热跟踪的证据; iv）互惠网络的拓扑结构和结构如何对气候变化作出反应; v）物种个体特征的群体变异如何决定网络结构; vi）我们是否可以通过考虑物种间代谢、系统发育和功能特征变异的数据来预测互惠网络的非随机变化。