Dissertation Research: Demographic and Genetic Processes During Population Establishment of Silene alba

本研究将重点研究影响植物定殖过程的参数。具体而言，研究人员希望研究新建立的小殖民地和相关人口增长率之间的遗传联系的作用。通过研究影响一个常见物种定殖过程的遗传和人口统计学因素，他们将获得有助于了解因栖息地破碎化而稀有物种的种群动态的信息。本文将通过三种实验方法研究白丝藻的定殖过程。首先，研究人员将建立建立的殖民地种植在一个阵列上，殖民地之间的间距是渐变的。然后，对菌落之间基因交换的测量将与诸如菌落增长率之类的人口统计学属性相关联。其次，他们将通过比较由遗传可变的异交殖民者建立的人工殖民地和由遗传近交（兄弟姐妹交配）殖民者建立的殖民地，来研究建立者的亲缘关系和隔离对殖民地建立的作用。第三，调查人员将调查发现一个群体的个体数量变化对人口统计学的影响。最后，他们将对自然殖民化事件进行人口统计学遗传研究，因为它们发生在先前人口普查的白硅烯元种群中，为解释实验结果提供自然背景。本研究将重点研究影响植物定殖过程的参数。具体地说,新台币/!!!!F (Times New Roman Symbol & Arial * " h 6 e: e V Antonovics/Richards abstract Elizabeth M. Behrens Elizabeth M. Behrens

9311635 Antonovics This study will focus on the parameters that affects the colonization process in plants. Specifically, the investigators wish to examine the role of genetic connections between small newly established colonies and the correlated rate of population increase. By studying both the genetic and demographic factors that influence the process of colonization in a common species, they will gain information useful for understanding the population dynamics of species made rare by habitat fragmentation. %%% The process of colonization in Silene alba will be studied experimentally three ways. First the investigators will establish founder colonies planted in an array with graded spacing intervals between colonies. Measurements of gene exchange between colonies will then be correlated with demographic attributes such as rates of colony growth. Secondly, they will investigate the effects of the relatedness of the founders and the role of isolation on colonization establishment by comparing artificial colonies established with genetically variable outcrossed colonists to colonies established with genetically inbred (sib-mated) colonists. Thirdly, the investigators will investigate the demographic effects of varying the number of individuals that found a colony. Finally, they will conduct demographic genetic studies of natural colonization episodes as they occur in a previously censused metapopulation of Silene alba to provide a natural backdrop against which to interpret the experimental results. *** tonovics This study will focus on the parameters that affects the colonization process in plants . Specifically, t $ / ! !. !. !. F ( Times New Roman Symbol & Arial * " h 6 e: e V Antonovics/Richards abstract Elizabeth M. Behrens Elizabeth M. Behrens