Cottonwood and the River of Time: On Trees, Evolution, and Society

Contents

ContentS Preface and acknowledgments ix ParT i The Tree and the River 1 The tree 5 2 The River 10 3 Regeneration 18 4 water and nutrient Relations 26 5 Perpetuate and Proliferate! 33 ParT ii Variation and Variability 6 Clones 43 7 why Sex? 52 8 Password? 61 9 natural hybridization 69 ParT iii From Species to Populations to Genes 10 Common Gardens 85 11 transplanted trees 94 12 Getting Closer to the Genes 104 13 migrant trees 115 14 adaptation and its limits 126 ParT iv Trees and Society 15 Changing Rivers—Changing landscapes 143 16 The dawn of agriculture 152 17 The farmer’s trees 161 18 from farmers’ trees to tree farms 173 19 Poplar—a model tree 187 20 tree Genomics and Beyond 199 21 Between old Growth and Plantations 215 22 The essence of trees 227 23 outlook 238 notes 247 Glossary 263 Bibliography 271 index 289 ...