Collaborative Research: Trait evolution and the stability of ecological communities

合作研究：性状演化与生态群落稳定性

• 批准号: 1312490
• 负责人: Casey terHorst
• 金额: $ 29.79万
• 依托单位: The University Corporation, Northridge
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-10-01 至 2017-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1312490&HistoricalAwards=false
• 关键词: Collaborative; Research; Trait; evolution; stability

Environmental changes, such as those associated with global climate change, can affect the stability of natural communities. These same changes may also affect how species evolve, especially on very short time scales (months to decades). The goal of this project is to understand how to measure and predict the stability of natural communities, particularly when species evolve in response to environmental changes. While ecological and evolutionary processes were traditionally not studied together, there is mounting evidence that these processes interact and affect present-day communities (i.e. eco-evo feedbacks). A fundamental challenge facing evolutionary ecologists is to determine the extent to which these eco-evo feedbacks affect species abundances and the stability of communities. This project tackles this challenge by developing a mathematical framework for analyzing eco-evo feedbacks, and applying this framework to species in a natural community. Specifically, the investigators will use pitcher plant communities to evaluate the applicability of the mathematical framework and to provide an empirical basis for extrapolating theoretical results to other natural communities. These combined theoretical and empirical efforts will provide insights into when eco-evo feedbacks stabilize or destabilize ecological communities. Understanding eco-evo feedbacks is particularly important in ecosystems where human activities are a dominant ecological and evolutionary force. Society depends on many ecosystem services, in the form of food, medicine, and energy, which in turn depend on the stability of natural communities. In analyzing the role of eco-evo feedbacks on community stability, the project will provide a framework to better understand how ecosystems respond to anthropogenic disturbances and how to potentially minimize their impact on ecosystem services. This project will also support multiple outreach activities to K-12 education. Particularly, the investigators on this project will continue their extensive work with the California State Summer School for Mathematics and Science (COSMOS) at Davis, the GK-12 program to develop Data Nuggets for use in K-12 classrooms, and continued outreach to a number of organizations aimed at promoting STEM (Science, Technology, Engineering and Mathematics) education for young women at Davis. Undergraduate students will be supported by this project and recruiting efforts will target traditionally underrepresented groups in the sciences by interfacing with Biology Undergraduate Scholars Program (BUSP), the Louis Stokes Alliance for Minority Participation (LSAMP), the McNair Scholars, and the California Alliance for Minority Participation (CAMP) at Davis.

环境变化，例如与全球气候变化有关的变化，可以影响自然群落的稳定性。这些变化也可能影响物种的进化方式，尤其是在很短的时间尺度上（几个月到几十年）。该项目的目标是了解如何测量和预测自然群落的稳定性，特别是当物种因环境变化而进化时。虽然生态和进化过程传统上没有一起研究，但越来越多的证据表明，这些过程相互作用并影响当今的社区（即生态-进化反馈）。进化生态学家面临的一个基本挑战是确定这些生态进化反馈对物种丰度和群落稳定性的影响程度。该项目通过开发一个数学框架来分析生态进化反馈，并将该框架应用于自然群落中的物种，从而解决了这一挑战。具体而言，研究人员将使用猪笼草群落来评估数学框架的适用性，并为将理论结果外推到其他自然群落提供经验基础。这些结合理论和经验的努力将提供关于生态进化反馈何时稳定或破坏生态群落的见解。在人类活动是主导生态和进化力量的生态系统中，理解生态进化反馈尤为重要。社会依赖于许多生态系统服务，以食物、医药和能源的形式，而这些服务又依赖于自然群落的稳定。在分析生态进化反馈对群落稳定性的作用时，该项目将提供一个框架，以更好地了解生态系统如何应对人为干扰，以及如何尽可能减少人为干扰对生态系统服务的影响。该项目还将支持多项面向K-12教育的外展活动。特别是，该项目的研究人员将继续与戴维斯的加州州立数学与科学暑期学校（COSMOS）， GK-12计划开发用于K-12教室的数据掘金进行广泛的合作，并继续与一些旨在促进戴维斯年轻女性STEM（科学，技术，工程和数学）教育的组织进行接触。本科学生将得到该项目的支持，通过与生物学本科学者计划（BUSP）、路易斯斯托克斯少数民族参与联盟（LSAMP）、麦克奈尔学者和戴维斯加州少数民族参与联盟（CAMP）对接，招募工作将针对传统上代表性不足的科学群体。