Dissertation Research: A subalpine forb's response to long-term experimental warming

论文研究：亚高山杂草对长期实验性变暖的反应

• 批准号: 1110337
• 负责人: Maureen Stanton
• 金额: $ 1.5万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-01 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1110337&HistoricalAwards=false
• 关键词: Dissertation; Research; subalpine; forb; response

When climatic change surpasses tolerance limits, plant and animal populations have three possible general responses - they can adapt, either via plasticity or genetic change, to their local changing environment; migrate to more suitable habitats; or go extinct. This research investigates the potential roles of evolutionary adaptation and migration in preventing the extinction of a short-lived, subalpine wildflower in an experimentally warmed mountain meadow (the 'Warming Meadow'). A series of transplant experiments will 1) test for adaptation to warmed microclimates, 2) tease apart the plastic and genetic components of this adaptation, and 3) test whether immigrant seeds 'pre-adapted' to warmer, drier, low-elevation conditions can potentially rescue the declining Warming Meadow wildflower population. Understanding population-level responses to global climate change is of central concern to conservation, agricultural, and public health scientists and policy-makers. This research uses a novel combination of common gardens, reciprocal transplants, and molecular analyses to investigate evolutionary adaptation and migration in response to climate warming. Thus, the intellectual and scientific merits of this study lie in its use of a unique, long-term experiment to address issues of global importance. The investigators will communicate research findings and their enthusiasm for scientific inquiry to a broad public audience, including adults of diverse cultural, economic, and political backgrounds; grade-school students, and undergraduates in both California and Colorado.

当气候变化超过耐受极限时，动植物种群有三种可能的一般反应--它们可以通过可塑性或遗传变化适应当地不断变化的环境;迁移到更合适的栖息地;或者灭绝。本研究探讨了进化适应和迁移在防止一种短命的亚高山野花在实验温暖的山地草甸（“温暖草甸”）灭绝中的潜在作用。一系列移植实验将1）测试对温暖小气候的适应，2）梳理这种适应的塑料和遗传成分，3）测试移民种子是否“预适应”温暖，干燥，低海拔条件可以潜在地拯救正在下降的Warming Meadow野花种群。了解人口对全球气候变化的反应是保护，农业和公共卫生科学家和政策制定者的核心问题。 这项研究使用了一种新颖的共同花园，相互移植和分子分析的组合，以研究应对气候变暖的进化适应和迁移。因此，这项研究的知识和科学价值在于它使用了一个独特的长期实验来解决全球重要性问题。调查人员将向广大公众传达研究结果和他们对科学探究的热情，包括不同文化，经济和政治背景的成年人;小学生和加州和科罗拉多的本科生。