Collaborative Research: BoCP-Implementation: Biodiversity and stability on a changing planet: plant traits and interactions that stabilize or destabilize ecosystems and populations

合作研究：BoCP-实施：不断变化的星球上的生物多样性和稳定性：稳定或破坏生态系统和种群的植物性状和相互作用

• 批准号: 2224853
• 负责人: Jennifer Lau
• 金额: $ 30.99万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-01-01 至 2027-12-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2224853&HistoricalAwards=false
• 关键词: Collaborative; Research; BoCP; Implementation; Biodiversity

Extreme climate events and biodiversity loss are destabilizing ecosystems. Increases in the variability of plant productivity from one year to the next could threaten the reliable supply of ecosystem services that depend on plant productivity, which include food production and climate regulation. Furthermore, extreme climate events and some other global environmental changes (e.g., nitrogen deposition and rising atmospheric carbon dioxide concentrations) could destabilize populations of individual species, potentially threatening their persistence. Species traits can determine responses to global change and influence stability. It remains unclear, however, how global changes are shifting plant species’ traits and interactions, through ecological and evolutionary responses, in ways that could stabilize or destabilize ecosystems and populations. Furthermore, it is not yet possible to predict long-term invariability from short-term estimates of resistance and resilience or to forecast the resistance of ecosystems and populations to perturbations, such as droughts, prior to their occurrence. Through theoretical modeling and ecological and evolutionary experiments this work will evaluate the effects of species traits on community resistance and resilience the face of environmental change. In addition, the project will (1) engage K-12 students and teachers from urban and rural communities on field trips to the field research site; (2) develop science kits and lessons for use in K-12 classrooms; and (3) provide research training and mentoring for undergraduate students, graduate students, and postdoctoral scholars. This project is developing and testing an integrated and predictive framework for considering how global changes are driving ecological and evolutionary shifts in plant traits in ways that can stabilize or destabilize populations or ecosystems. The proposed projects will: (1) test new theoretical predictions regarding how invariability depends on its resistance and resilience components; (2) determine how invariability, resistance, and resilience depend on plant species traits and species interactions; (3) conduct new greenhouse and field experiments, using seeds collected from ongoing long-term experiments, to determine how evolution has altered species’ traits, resistance, resilience, and invariability; and (4) scale out to other grasslands and forests and up to larger spatial scales to test theoretical predictions regarding dependence of invariability on its resistance and resilience components, and how invariability, resistance, and resilience depend on plant species traits through a synthesis working group. Much of this work uses data and seeds from BioDIV and BioCON, the world’s longest-running biodiversity experiments. These experiments fully cross biodiversity treatments with several global change treatments (warming, drought, elevated CO2, and/or enriched N), allowing tests of eco-evolutionary responses to global changes in the presence or absence of plant species interactions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

极端气候事件和生物多样性丧失正在破坏生态系统的稳定，植物生产力一年到一年的变化可能会威胁到依赖植物生产力的生态系统服务的可靠供应，其中包括粮食生产和气候调节。以及其他一些全球环境变化（例如氮沉降和大气二氧化碳浓度上升）可能会破坏单个物种的种群稳定，从而可能威胁到它们的持久性，但目前尚不清楚物种特征如何决定对全球变化的反应并影响全球稳定性。变化正在改变植物通过生态和进化反应，以稳定或破坏生态系统和种群的方式影响物种的特征和相互作用。此外，目前还不可能根据抵抗力和复原力的短期估计来预测长期不变性或预测抵抗力。这项工作将通过理论建模以及生态和进化实验，在干旱等扰动发生之前评估物种特征对群落抵抗力和恢复力的影响。 (1) 参与K-12来自城市和农村社区的学生和教师前往实地研究地点进行实地考察；(2) 开发用于 K-12 课堂的科学套件和课程；(3) 为本科生、研究生和研究生提供研究培训和指导；该项目正在开发和测试一个综合的预测框架，用于考虑全球变化如何以稳定或破坏种群或生态系统的方式驱动植物性状的生态和进化变化。拟议的项目将：（1）测试新的理论。关于不变性如何取决于的预测其抗性和恢复力组成部分；（2）确定不变性、抗性和恢复力如何取决于植物物种特征和物种相互作用；（3）使用从正在进行的长期实验中收集的种子进行新的温室和田间实验，以确定进化如何；改变了物种的性状、抵抗力、恢复力和不变性；(4)扩展到其他草原和森林以及更大的空间尺度，以测试关于不变性对其抵抗力和恢复力组成部分的依赖性以及不变性、抵抗力如何影响的理论预测。 ，而恢复能力取决于植物这项工作的大部分工作都使用来自 BioDIV 和 BioCON 的数据和种子，这是世界上运行时间最长的生物多样性实验，这些实验完全交叉了生物多样性处理与几种全球变化处理（变暖、干旱、二氧化碳浓度升高和/）。或丰富的 N），允许在存在或不存在植物物种相互作用的情况下测试对全球变化的生态进化反应。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。