EAGER: The Role of Plant-Soil Feedbacks on Species Potential to Expand their Distributional Ranges in Response to Climate Change

许多植物物种预计将改变其分布范围，以应对全球变暖。这种转变的生态和经济后果可能是巨大的，并对保护当地生物多样性、当地森林的经济价值（例如，与经济有关的物种可能扩展到新的地区，或可能在其现有范围上有所减少）以及保护有关的生态系统功能（例如，防止土壤侵蚀、补充地下水位、碳储存和娱乐活动）产生严重影响。重要的是要考虑到，除了气候之外，许多其他因素也将影响植物群落的未来组成。例如，植物可以改变土壤生物的组成和丰度，以及土壤的化学和结构，从而改变植物随后的生存和生长。这一过程被称为植物-土壤反馈，可能会对迁移植物物种的定植成功产生重大影响，因为它们可能会从自然土壤病原体中释放出来，并且/或被剥夺了在其原生范围内已经成为专门针对它们的关键有益生物。目前，我们对植物-土壤相互作用如何影响植物物种对气候变化的反应知之甚少。本项目的总体目标是开展探索性工作，评估植物-土壤反馈对大湖区温带优势树种迁移潜力的作用。我们正在进行的实地研究和拟议的温室研究相结合，将为自然资源管理者提供有关物种的现实信息，这些物种将能够在气候变化的地区建立或持续存在，有助于实施成功的保护和管理计划。

Many plant species are expected to shift their distributional ranges in response to global warming. The ecological and economic consequences of such shifts could be enormous and have serious implications for conservation of local biodiversity, for the economic value of local forests (e.g., economically relevant species might expand to new areas, or might experience a reduction on their current ranges), and also for preservation of relevant ecosystem functions (e.g., soil erosion prevention, replenishment of water table, carbon storage, and recreational activities).It is important to consider that in addition to climate, many other factors will also shape the future composition of plant communities. For instance, plants can change the composition and abundance of soil organisms as well as the chemistry and structure of soil in ways that alter subsequent plant survival and growth. This process, referred to as plant-soil feedbacks will likely have a large impact on colonization success of migrant plant species as they may be released from their natural soil pathogens and/or deprived of key beneficial organisms that have become specialized on them in their native range. At this time, we have little or no information on how plant-soil interactions may influence plant species responses to climate change. The overarching goal of this project is to conduct exploratory work that evaluates the role that plant-soil feedbacks may play on the migratory potential of dominant temperate tree species within the Great Lakes region. The combination of our ongoing field and proposed greenhouse studies will supply natural resources managers with realistic information on the species that will be able to establish or persist within the region under changing climate, helping to implement successful conservation and management programs.