Environmental and Developmental Regulation of Carbon Cycling in a Warm-temperate Forest By

......................................................................................... 54 INTRODUCTION.................................................................................. 55 RESULTS............................................................................................ 56 vii DISCUSSION..................................................................................... 58 METHODS........................................................................................ 62 TABLES........................................................................................... 71 FIGURES.......................................................................................... 72 LITERATURE CITED........................................................................... 76 CHAPTER 4: MECHANISMS OF AGE-RELATED CHANGES IN FOREST PRODUCTION: THE INFLUENCE OF PHYSIOLOGICAL AND SUCCESSIONAL CHANGES ............................................................... 83 ABSTRACT......................................................................................... 83 INTRODUCTION................................................................................ 84 METHODS......................................................................................... 86 RESULTS.......................................................................................... 96 DISCUSSION..................................................................................... 100 FIGURES.......................................................................................... 104 LITERATURE CITED............................................................................ 111 CHAPTER 5: AGE-RELATED HYDRAULIC LIMITATION OF PHOTOSYNTHESIS BY LOBLOLLY PINE (Pinus taeda) TREES ................................................... 123 ABSTRACT......................................................................................... 123 INTRODUCTION................................................................................ 124........................................................................................ 123 INTRODUCTION................................................................................ 124 METHODS......................................................................................... 126 RESULTS........................................................................................... 133 DISCUSSION..................................................................................... 135 TABLES............................................................................................. 139 viii FIGURES.......................................................................................... 141 LITERATURE CITED........................................................................... 148 CHAPTER 6: SUMMARY.............................................................................. 157 EXPERIMENTAL CO2 ENRICHMENT OF A YOUNG FOREST....................... 158 LONG-TERM CONTROLS OF FOREST PRODUCTION................................. 160 EVOLUTIONARY ECOPHYSIOLOGY..................................................... 162 SUMMARY....................................................................................... 167 TABLES............................................................................................. 168 FIGURES........................................................................................... 169 LITERATURE CITED........................................................................... 170 APPENDIX I............................................................................................... 174 APPENDIX II.............................................................................................. 177 APPENDIX III............................................................................................. 178 CURRICULUM VITAE................................................................................. 179