REU/ROA: Collaborative Research: Predation, Herbivory and Disturbance: Structuring Forces in the Littoral Zone Community of North Temperate Lakes

REU/ROA：合作研究：捕食、食草和干扰：北温带湖泊沿岸地区社区的结构力量

• 批准号: 8907407
• 负责人: David Lodge
• 金额: $ 20.45万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-01 至 1992-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8907407&HistoricalAwards=false
• 关键词: REU; ROA; Collaborative; Research; Predation

The relative importance of biotic and abiotic factors in structuring the littoral zone community in northern Wisconsin lakes will be evaluated. The proposed work builds on 5 years of collaborative research examining the major forces controlling the structure and function of the nearshore community. The approach is comprehensive. It evaluates complex interactions, direct and indirect interactions among predators and their prey, and the cascade hypothesis. They have all been recently applied to the pelagia of lakes, but are largely untested in the structurally- complex environment of the benthic, littoral cummunity. The centerpiece for this effort is a mesocosm experiment in which densities of fish predators of crayfish and crayfish are treatment variables. Treatments in which the fish predators of crayfish are reduced to mimic the impact of winterkill on the top trophic level will be used. The mesocosms represent a scale intermediate between laboratory and whole-lake experiments. The approach is tractable, realistic, and absolutely required to make progress toward understanding those forces structuring the littoral community.

生物因素和非生物因素的相对重要性 构建威斯康星州北方的沿岸的社区 将对湖泊进行评估。 拟议的工作建立在5年的 合作研究审查控制的主要力量 近岸群落的结构和功能。 的方法 是全面的 它评估复杂的相互作用，直接和 捕食者和猎物之间的间接相互作用， 级联假说 它们最近都已应用于 湖泊的浮游层，但在结构上基本上没有经过测试， 复杂的底栖环境，沿岸的群落。 的 这项工作的核心是一个中型实验， 小龙虾和小龙虾的鱼类捕食者的密度是 治疗变量 处理方法中， 小龙虾被减少以模仿冬杀动物对顶部的影响 将使用营养级。 中型生态系统代表了一个尺度 介于实验室和全湖实验之间。 的 方法是易处理的，现实的，绝对需要使 在理解那些构成世界的力量方面取得了进展。 沿岸的群落。