DISSERTATION RESEARCH: Biotic controls of the ecology and evolution of plant growth and defense

论文研究：植物生长和防御的生态和进化的生物控制

• 批准号: 1110809
• 负责人: Evan Siemann
• 金额: $ 1.48万
• 依托单位: William Marsh Rice University
• 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 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1110809&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Biotic; controls; ecology

Changes in species interactions between native and introduced ranges of exotic species are important determinants of invasion success. Despite this, little is known about how predation and competition interact to affect the evolution of traits that increase the impacts of invasive species. Underlying predictions of plant invasiveness is the assumption that individuals tradeoff energy devoted to growth and defense, and that the effects of this tradeoff depend on the biotic environment. The goal of this research is to understand how variation in important species interactions contributes to invasive species success and to predict when certain traits that may influence invasiveness are likely to evolve. The project relies on multiple lines of a rapidly growing model plant that differ in lifetime intensity of competition and predation, will characterize differences in life history strategies among these lines, and will use a field invasion experiment to detect the effects of both historic and current biotic interactions on plant success. Exotic species threaten global biodiversity by damaging native ecosystems and the services they provide. This project will increase understanding of the evolution in exotic species and bridges the gap between plant ecology and evolution. The project includes a collaboration with Chinese scientists. One of the investigators has considerable experience mentoring undergraduate students, and particularly those from under-represented groups, and plans to continue these training activities during the proposed project.

外来物种的本地和引进范围之间的物种相互作用的变化是入侵成功的重要决定因素。尽管如此，很少有人知道捕食和竞争如何相互作用，以影响性状的进化，增加入侵物种的影响。对植物入侵性的潜在预测是假设个体权衡用于生长和防御的能量，并且这种权衡的影响取决于生物环境。这项研究的目的是了解重要物种相互作用的变化如何有助于入侵物种的成功，并预测可能影响入侵性的某些特征可能会在何时进化。该项目依赖于一个快速增长的模型植物，不同的竞争和捕食的生命周期强度的多个行，将这些行之间的生活史策略的差异，并将使用现场入侵实验，以检测历史和当前的生物相互作用对植物成功的影响。 外来物种通过破坏本地生态系统及其提供的服务威胁全球生物多样性。这个项目将增加对外来物种进化的理解，并弥合植物生态学和进化之间的差距。该项目包括与中国科学家的合作。其中一名调查员在指导本科生，特别是来自代表性不足群体的本科生方面有相当丰富的经验，并计划在拟议项目期间继续开展这些培训活动。