THE REGULATION OF PRIMARY PRODUCTIVITY IN THE SOUTHERN

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Duke University Marine Laboratory

2005

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TABLE OF CONTENTS

ABSTRACT iv

ACKNOWLEDGMENTS vi

LIST OF FIGURES ix

LIST OF TABLES xii

LIST OF SYMBOLS xiv

LIST OF ABBREVIATIONS xvii

CHAPTER

I. Introduction 2

II. Methods 6

III. Quantum yield drives Southern Ocean iron response 18

IV. Primary productivity and its regulation in the Pacific Sector of the Southern Ocean 46

V. The effect of iron on photosynthetic competency: the dependence on size and environmental

factors 87

VI. Modified Circumpolar Deep Water regulates primary productivity in the Ross Sea 102

VII. Conclusions 133

REFERENCES 137

BIOGRAPHY 156