Climate-change Impacts on Terrestrial Ecosystems: The Intersection of Restoration, Invasives, and Disturbance

这是一个关于管理生态系统以保护或加强关键生态系统服务的项目。它关注的是气候变化和恢复之间的交集。核心假设是，气候变化可以促进或阻碍加州草原生态系统向本地多年生植物的恢复，其影响方向取决于土壤肥力和野火的流行程度。在贾斯珀岭（Jasper Ridge） 10年的全球变化控制遗产（例如，氮沉积、变暖、二氧化碳升高和降水改变）的基础上，该研究将探索增强本地植物优势和增强对非本地植物入侵的抵抗力的方法。该研究包括一系列野外操作实验，探索气候变化在促进或阻碍原生多年生草地取代非原生植物方面的作用。它还将解决野火在这种恢复中的作用，并评估恢复和未恢复的草地对入侵的易感性，所有这些都是在广泛的模拟气候变化的背景下进行的。该研究的更广泛影响部分有三个部分。第一部分涉及提高政府间气候变化专门委员会报告中操纵性实验的可见度，并强调其政策相关性（气候变化专门委员会主席是影响、适应和脆弱性第二工作组的联合主席）。第二部分是基于将研究结果转化为产品和演示文稿，旨在对生态系统管理者有用。第三部分为获奖的贾斯珀岭项目增加了全球气候部分，该项目专注于吸引六年级学生参与环境研究。

This is a project on managing ecosystems to protect or enhance key ecosystem services. It focuses on the intersection between climate change and restoration. The central hypothesis is that climate change can facilitate or impede restoration of California grassland ecosystems to native perennial plants, with the direction of the effect depending on soil fertility and the prevalence of wildfire. Building on a legacy of ten years of global-change manipulations (e.g., enhanced nitrogen deposition, warming, elevated carbon dioxide and altered precipitation) at Jasper Ridge, the research will explore approaches for enhancing dominance by the native plants and increasing resistance to invasion by non-native plant species. The research involves a series of field-based manipulative experiments that will explore the role of climate change in facilitating or retarding the replacement of non-native plants with native perennial grassland. It will also address the role of wildfire in this restoration and assess the susceptibility to invasion of restored and unrestored grassland, all within the context of a wide range of simulated climate changes.The broader impacts component of the research has three parts. Part one involves enhancing the visibility and highlighting the policy relevance of manipulative experiments in the reports of the Intergovernmental Panel on Climate Change (where the PI is co-chair of Working Group 2 on impacts, adaptation, and vulnerability). Part two is based on transforming the results of the research into products and presentations designed to be useful to ecosystem managers. Part three adds a global climate component to an award-winning Jasper Ridge program focused on engaging sixth-grade students in environmental studies.