Collaborative Research: Open-Water Plantivores and Turbidity: Influence on Size-Structured Interactions among Centrarchid Fishes

合作研究：开放水域食草动物和浊度：对中心鱼之间尺寸结构相互作用的影响

• 批准号: 8705518
• 负责人: Roy Stein
• 金额: $ 5.26万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-01 至 1990-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8705518&HistoricalAwards=false
• 关键词: Collaborative; Research; Open; Water; Plantivores

Most lakes and reservoirs of the southeastern and central United States differ from upper-midwestern lakes by having very turbid water and the presence of open-water fish species which feed predominantly on zooplankton (e.g., gizzard and threadfin shad). These two factors have profound effects on the production of invertebrates and fishes in lakes. This study will examine how the presence of shad affects fish species interactions, as well as studying the impact of shad on other aspects of the lake system (e.g., algae and zooplankton). It seeks to extend the substantial understanding gained from studies of northern fish communities to a geographically broader portion of the country. Because species interactions in fishes are often complex due to changes in their diet and habitat use as they grow, (e.g., many large predatory fish begin their lives feeding on small zooplankton), the impact of shad and turbidity can only be understood by considering how each factor influences all points in a fish's life history. The project will utilize a series of laboratory, pond, and whole-lake experiments designed to examine the effect of shad on the larvae, juveniles and adults of three important sport fishes; bluegill, largemouth bass, and white crappie. This work capitalizes on a unique opportunity to study fish, zooplankton and phytoplankton in two Ohio reservoirs before and after the whole-lake introduction of threadfin shad. The study will provide much needed insight into the effects of introduced planktivores on the resident fish fauna and their potential role in lake management. Ohio Department of Natural Resources is funding additional research on the study reservoirs which will add generality and depth to the total information base being generated.

东南部和中部的大多数湖泊和水库 美国与中西部湖泊不同， 浑浊的水和开放水域鱼类的存在， 主要以浮游动物为食（例如，砂囊和线鳍 鲱鱼）。 这两个因素对生产有着深刻的影响 湖泊中的无脊椎动物和鱼类。 本研究将探讨 沙德的存在如何影响鱼类物种的相互作用， 以及研究沙德对湖泊其他方面的影响 系统（例如，藻类和浮游动物）。 它旨在扩大 从北方鱼类研究中获得的实质性理解 社区扩大到全国更广泛的地理区域。 由于鱼类的物种间相互作用往往是复杂的， 随着它们的生长，它们的饮食和栖息地的使用发生变化，（例如，许多 大型掠食性鱼类开始它们的生活以小型 浮游动物），鲱鱼和浊度的影响只能是 通过考虑每个因素如何影响所有点来理解 在鱼的生活史上。 该项目将利用一系列的实验室，池塘， 全湖实验，旨在检查的影响， 三种重要观赏鱼的仔、稚鱼和成鱼; 蓝鳃鲈鱼大嘴鲈鱼和白色蟹 这项工作 利用一个独特的机会来研究鱼类，浮游动物 和浮游植物在两个俄亥俄州水库之前和之后， 全湖引种丝鳍 这项研究将 提供了急需的洞察力的影响， 对留鸟区系的影响及其潜在作用 湖泊管理。 俄亥俄州自然资源部是 资助有关水塘的额外研究， 为整个信息库增加了一般性和深度， 生成的.