Dynamics of Recruitment-Subsidized Populations

这项调查研究了受补贴的种群的动态，即新个体的增加在很大程度上或完全与当地繁殖分离的种群。这包括具有浮游生物幼虫的底栖生物的当地种群和物种（许多海洋鱼类），其中的随机变化使种群补充关系（如果有的话）无法检测。这类人群的人口统计最恰当的模型是将招聘写成外部“补贴”。种群的动态是由经过招募后生活史过滤的招募信号决定的。Caswell博士将研究补贴人口的四种模型（密度独立的人口模型、密度依赖的人口模型、耦合亚种群的超种群模型和多物种群落模型）。这些模型将为补贴人口的动态提供基本的理论见解。前两项还将为这些人口的实证人口分析提供工具。

This investigation addresses the dynamics of recruitment- subsidized populations, i.e. populations in which the addition of new individuals is largely or completely uncoupled from local reproduction. This includes local populations of benthic organisms with planktonic larvae and species (many marine fish) in which stochastic variation renders stock-recruitment relations, if any, undetectable. The demography of such populations is most appropriately modelled by writing recruitment as a external "subsidy". The dynamics of the population are determined by the recruitment signal filtered through the post- recruitment life history. Dr. Caswell will investigate four models (density-independent demographic models, density-dependent demographic models, metapopulation models for coupled subpopulations, and multi-species community models) for subsidized populations. These models will provide fundamental theoretical insight into the dynamics of subsidized populations. The first two will also provide tools for empirical demographic analysis of such populations.