Collaborative Research: Ecological Engineering by Fishes: The Importance of Biodiversity to Resource Heterogeneity and the Structure of Neotropical Streams

合作研究：鱼类生态工程：生物多样性对资源异质性和新热带溪流结构的重要性

• 批准号: 9615620
• 负责人: Michael Vanni
• 金额: $ 6.96万
• 依托单位: Miami University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9615620&HistoricalAwards=false
• 关键词: Collaborative; Research; Ecological; Engineering; Fishes

9615620 Vanni The major premise of this research is that sediment-feeding and algivorous fishes and amphibians are important ecological engineers in tropical streams, and can generate significant resource heterogeneity over a variety of spatial and temporal scales. Specifically, this research will examine whether the diverse guild of epibenthic-feeding fishes is ecologically redundant, and whether species identities are important to stream community and ecosystem dynamics including the generation of resource heterogeneity. The main objective of this research focuses on the importance of biodiversity, species identities, and density to resource heterogeneity, community and ecosystem dynamics. A series of experimental and observational tests will be used to address this main objective. This study will provide insight into the importance of biodiversity to the structure and function of stream communities. The proposed research will further our knowledge of community and ecosystem roles of sediment feeding and algivorous fishes, and demonstrate whether these organisms vary significantly in their capacities as ecological engineers. Sediment and algal-feeding fish are among the most important components of the freshwater fisheries throughout South America, yet their ecology is very poorly known. Overall, this project will broaden our limited knowledge of patterns and processes in tropical stream communities.

9615620 Vanni 这项研究的主要前提是，以沉积物为食的藻类鱼类和两栖动物是热带溪流中重要的生态工程师，可以在各种空间和时间尺度上产生显着的资源异质性。具体来说，这项研究将研究底栖鱼类的多样性是否在生态上是多余的，以及物种特性对于河流群落和生态系统动态（包括资源异质性的产生）是否重要。本研究的主要目标集中于生物多样性、物种特性和密度对资源异质性、群落和生态系统动态的重要性。将使用一系列实验和观察测试来实现这一主要目标。这项研究将深入了解生物多样性对溪流群落结构和功能的重要性。拟议的研究将进一步加深我们对沉积物摄食和藻类鱼类的群落和生态系统作用的了解，并证明这些生物体作为生态工程师的能力是否存在显着差异。沉积物和以藻类为食的鱼类是整个南美洲淡水渔业最重要的组成部分，但它们的生态却鲜为人知。总体而言，该项目将拓宽我们对热带溪流群落模式和过程的有限知识。