Collaborative Research: Stage-structured Interactions in Lake Communities

合作研究：湖泊群落的阶段结构相互作用

• 批准号: 9208824
• 负责人: Craig Osenberg
• 金额: $ 11.17万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-10-01 至 1995-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9208824&HistoricalAwards=false
• 关键词: Collaborative; Research; Stage; structured; Interactions

Although size and stage-structured populations are ubiquitous in natural communities few studies have examined their ecological consequences. Bluegill, the most common fish species in many small lakes throughout North America, have populations that are functionally stage-structured, with juveniles feeding on soft-bodied littoral invertebrates and adults feeding on limnetic zooplankton. The proposed research will test the hypothesis that bluegill populations link dynamics of littoral and limnetic habitats via their stage-structured habitat use and thus provide a central focus about which the rest of the fish community is organized. The research will examine processes responsible for among-lake variation in the production of large Daphnia, the primary resource of adult bluegill and the factor that explains among-lake variation in bluegill density and growth. Competition between juvenile bluegill and a suite of littoral fish species, including largemouth bass, will be examined using a combination of comparative lake surveys and experimental tests. The research will provide general understanding of the mechanisms and consequences of stage-structured interactions, and can help guide the development of specific management strategies for warm-water fisheries.

尽管大小和阶段结构的人群在自然社区中无处不在，很少有研究检查其生态后果。 Bluegill是北美许多小湖中最常见的鱼类，其种群在功能阶段结构上，少年以柔软的沿着无脊椎动物和成年人为食，以lim虫的浮游生物为食。 拟议的研究将检验以下假设，即蓝g种群通过其阶段结构的栖息地使用沿海和有限态栖息地的动态，从而提供了其余的鱼类群落的主要重点。 该研究将研究负责大水坝生产的湖泊差异的过程，成人蓝g的主要资源以及解释蓝g密度和生长的湖泊变化的因素。将使用比较湖泊调查和实验测试的组合检查少年蓝g和包括大嘴鲈在内的一系列沿海鱼类之间的竞争。 这项研究将提供对舞台结构互动的机制和后果的一般理解，并可以帮助指导制定温暖的水渔业的特定管理策略。