Size Structured Models for Copepods: Applications to Optimal Body Size

桡足类尺寸结构化模型：在最佳体型中的应用

• 批准号: 9115562
• 负责人: Hal Caswell
• 金额: $ 10万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-03-15 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115562&HistoricalAwards=false
• 关键词: Size; Structured; Models; Copepods; Applications

Adult body size in marine zooplankton varies with season and latitude. Larger body sizes are associated with colder seasons and higher latitudes. Since warmer environments and seasons also tend to process less prey, the interaction of food and temperature may have important influences on body size. Because body size affects all aspects of an individual's ecology, explanations of body size must consider it a possible life history adaptation to a changing environments in ways that are not yet well understood. This project will begin the development of a set of size-classified population models, and use them to predict optimal body size patterns on the basis of maximization of individual fitness. The models will incorporate size-specific growth, mortality, and fecundity rates and the responses of those rates to temperature and food. Models will be parameterized based on information in the literature. The resulting models will be simulated in the context of seasonally varying temperature and food signals, to see how the optimal life history responses affect population dynamics.

海洋浮游动物的成体大小随季节和纬度的变化而变化。较大的体型与较冷的季节和较高的纬度有关。由于温暖的环境和季节也倾向于处理较少的猎物，食物和温度的相互作用可能对身体大小有重要影响。由于体型影响个体生态的方方面面，对体型的解释必须将其视为一种可能的生活史，以一种尚未被很好理解的方式适应不断变化的环境。该项目将开始开发一套按体型分类的种群模型，并使用它们在最大化个体适应度的基础上预测最佳体型模式。这些模型将纳入特定大小的生长、死亡率和繁殖率，以及这些比率对温度和食物的反应。模型将根据文献中的信息进行参数化。所得到的模型将在季节变化的温度和食物信号的背景下进行模拟，以了解最优的生活史反应如何影响种群动态。