Testing the Effects of Intraspecific Phenotypic Variation on Community Structure and Dynamics in Coastal Lakes: Revisiting Size Selective Predation by Alewives

测试沿海湖泊种内表型变异对群落结构和动态的影响：重新审视白鹳的大小选择性捕食

• 批准号: 0717265
• 负责人: David Post
• 金额: --
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2011-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0717265&HistoricalAwards=false
• 关键词: Testing; Effects; Intraspecific; Phenotypic; Variation

Ecologists have long studied consequences of biological diversity among species on ecological processes. For example, it is well established that species identity influences ecological interactions and that the presence or absence of dominant species, keystone species, or ecosystem engineers can regulate community structure and ecosystem function. In contrast, much less is known about how variation within a species affects ecological interactions. This project will test the effects of variation in life history among populations of anadromous and landlocked alewives, Alosa pseudoharengus, on community structure and ecosystem function in lakes. Landlocked alewives are a keystone species, and phenotypic differences between landlocked and anadromous populations are expected to affect lake ecosystems. Results from whole-lake experimental and comparative studies, and small-scale experiments will addresses fundamental questions about how biological diversity within a species influences community structure and ecosystem function. There are three broad impacts of this work. First, the research addresses questions with direct management implications for the conservation and management of anadromous alewives, a federally listed species of conservation concern. Second, the research will engage local stakeholders in a lake sampling effort providing both outreach opportunities and supplemental data collection. Third, the research will provide interdisciplinary training in aquatic ecology as outlined in the 1996 NRC report on the status of education in freshwater ecosystems.

生态学家长期以来一直研究物种间生物多样性对生态过程的影响。 例如，众所周知，物种身份影响生态相互作用，优势物种、关键物种或生态系统工程师的存在或不存在可以调节群落结构和生态系统功能。 相比之下，人们对物种内部的变异如何影响生态相互作用知之甚少。该项目将测试溯河产卵和内陆白鳉（Alosa pseudoharengus）种群生活史的变化对湖泊群落结构和生态系统功能的影响。 内陆的真鳀是一个关键物种，内陆和溯河产卵种群之间的表型差异预计会影响湖泊生态系统。 全湖实验和比较研究以及小规模实验的结果将解决有关物种内的生物多样性如何影响群落结构和生态系统功能的基本问题。 这项工作具有三个广泛的影响。 首先，该研究解决了对溯河产卵鳀鱼的保护和管理具有直接管理影响的问题，鳅鱼是联邦列出的受保护物种。 其次，该研究将让当地利益相关者参与湖泊采样工作，提供推广机会和补充数据收集。第三，该研究将提供水生生态学方面的跨学科培训，如 1996 年 NRC 关于淡水生态系统教育状况的报告所述。