Species and genetic diversity of Draba [Elektronische Ressource] : phylogeny and phylogeography / presented by Ingrid Jordon-Thaden

Dissertationsubmitted to theCombined Faculties for Natural Sciences and for Mathematicsof the Ruperto-Carola University of Heidelberg, Germanyfor the degree ofDoctor of Natural Sciences presented byMasters of Biology Ingrid Jordon-Thadenborn in Omaha, Nebraska, USAOral examination: 11 December 2009Species and Genetic Diversity of Draba:Phylogeny and PhylogeographyReferees:Prof. Dr. Marcus KochProf. Dr. Thomas RauschContents1 Introduction 31.1 Evolutionary Biology: Why plants? Why Draba? . . . . . . . . . . . . . . . . . . . . . . . 31.2 Stresses that increase diversity and speciation . . . . . . . . . . . . . . . . . . . . . . . . . 41.3 Species Radiations and Migrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.4 Overview of the Chapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Species Richness Patterns of Draba 72.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.2 Materials and Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.2.1 Compilation of species for alpha diversity . . . . . . . . . . . . . . . . . . . . . . . 102.3 Results and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.3.1 Levels of Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.3.2 North America . . . . . . . . . . . . . . . . . . . . . . . . . . . . .