Global Environmental Change: Consequences for Multitrophic Interactions Across Genotypes and Scales

全球环境变化：跨基因型和尺度的多营养相互作用的后果

• 批准号: 0129123
• 负责人: Richard Lindroth
• 金额: $ 30万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0129123&HistoricalAwards=false
• 关键词: Global; Environmental; Change; Consequences; Multitrophic

AbstractRick Lindroth and Caroline AwmackProposal 0129123Increasing concentrations of atmospheric carbon dioxide (CO2) and ozone (O3) are anticipated to exert widespread impacts on ecosystems. Exceedingly little is known, however, about the effects of these factors on the dynamics and genetic structure of populations of interacting species. The purpose of this research is to assess the independent and interacting effects of elevated CO2 and O3 on the dynamics of a host plant - herbivore - natural enemy model system. This research will be conducted at the Aspen FACE (Free Air CO2 Enrichment) facility in northern Wisconsin. Studies will be conducted to evaluate the long-term impacts of CO2 and O3 on the population dynamics of natural assemblages of red clover, pea aphids, and two natural enemies (ladybeetles and a parasitic wasp), and the importance of genotype in influencing such interactions. Results will improve our understanding of the relative importance of competition as well as bottom-up and top-down trophic interactions for community dynamics, in the context of global environmental change.

Abtractrick Lindroth和Caroline AwmackPropossos 0129123注入了大气二氧化碳（CO2）和臭氧（O3）的浓度，预计将对生态系统产生广泛影响。然而，关于这些因素对相互作用物种种群的动态和遗传结构的影响，鲜为人知。这项研究的目的是评估升高的二氧化碳和O3对宿主植物动力学的独立和相互作用的影响 - 食草动物 - 天然敌人模型系统。这项研究将在威斯康星州北部的阿斯彭面（自由空气二氧化碳富集）设施进行。将进行研究，以评估二氧化碳和O3对红三叶草，豌豆蚜虫和两个天然敌人（瓢虫和寄生虫黄蜂）的天然组合的长期影响，以及基因型在影响这种相互作用中的重要性。结果将提高我们对在全球环境变化的背景下对竞争以及自下而上和自上而下的营养相互作用的相对重要性的理解。