Collaborative Research: Intermediate Regulation of Reservoir Communities: Strong Regulators, Stochasticity, and the Generality of the Trophic Cascade Hypotheses

合作研究：水库群落的中间调节：强调节器、随机性和营养级联假说的一般性

• 批准号: 9407859
• 负责人: Roy Stein
• 金额: $ 10万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-15 至 1997-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9407859&HistoricalAwards=false
• 关键词: Collaborative; Research; Intermediate; Regulation; Reservoir

9407859 Stein This project examines the trophic cascade hypothesis in lower-latitude US reservoirs, where the dominant paradigm of top-down or bottom-up trophic controls may not hold. Specifically, gizzard shad appear to neither be controlled by fish predators nor by their zooplankton prey. The investigators hypothesize that the shad themselves regulate community composition. This research will test this idea by examining larval shad-bluegill interactions in eight reservoirs in Ohio and Alabama. The investigators will also conduct experiments on zooplankton and larval shad productivity, and develop models of these trophic interactions. This research will extend the current understanding of ecosystem control and community structure, yielding a more general understanding of the dynamics of food webs. The results of this research have applications in the management of fish stocks, reservoir management, and conservation biology.

小行星9407859 本项目研究了低纬度美国水库的营养级联假说，其中自上而下或自下而上的营养控制的主导范式可能不成立。 具体来说，砂囊似乎既不受鱼类捕食者的控制，也不受浮游动物的捕食。 研究人员假设，鲱鱼本身调节社区组成。 这项研究将通过检查俄亥俄州和亚拉巴马八个水库中的幼虫阴影蓝鳃金龟相互作用来验证这一想法。 研究人员还将对浮游动物和幼鱼生产力进行实验，并开发这些营养相互作用的模型。 这项研究将扩展目前的理解生态系统控制和社区结构，产生一个更全面的了解食物网的动态。 这项研究的结果在鱼类资源管理，水库管理和保护生物学的应用。