An Empirical and Modeling Analysis of the Impact of Hypoxia on Copepod Population Dynamics

缺氧对桡足类种群动态影响的实证和模型分析

• 批准号: 9910846
• 负责人: Nancy Marcus
• 金额: $ 33万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9910846&HistoricalAwards=false
• 关键词: Empirical; Modeling; Analysis; Impact; Hypoxia

The occurrence of hypoxia/anoxia in coastal waters has been increasing in frequency and duration. Studies of the impact of hypoxia/anoxia on the biota of estuarine and coastal waters have typically focused on commercially important benthic or demersal fauna. The impact on zooplankton has received little attention yet micro- and meso- zooplankton are important elements in marine food webs. Copepods in particular constitute a critical component of the diet of larval fish in these regions. This research is concerned with the population -level consequences of hypoxia and anoxia for marine copepods. Because copepods are one of the most abundant zooplankton groups in pelagic marine systems, the detrimental effects of low oxygen levels on copepods can have a sizable impact on their many predators. These studies will combine experimental manipulations with matrix population models constructed from laboratory results. The final product will allow an examination of how hypoxia/anoxia affects copepod populations and by association, the juvenile fish that rely on these organisms for food during this critical life stage.

沿海沃茨缺氧/缺氧的发生频率和持续时间都在增加。关于低氧/缺氧对河口和沿海沃茨生物群影响的研究通常侧重于具有重要商业价值的底栖或底层动物。对浮游动物的影响很少受到关注，但微型和中型浮游动物是海洋食物网的重要组成部分。桡足类尤其是构成这些区域幼鱼饮食的重要组成部分。本研究关注海洋桡足类在缺氧和缺氧环境下的种群水平后果.由于桡足类是远洋海洋系统中最丰富的浮游动物群体之一，低氧水平对桡足类的有害影响可能对它们的许多捕食者产生相当大的影响。这些研究将结合联合收割机的实验操作与矩阵人口模型从实验室结果构建。最终产品将允许检查缺氧/缺氧如何影响桡足类种群，并通过关联，依赖于这些生物体的食物在这个关键的生命阶段的幼鱼。