INDIAN OCEAN BIOGEOCHEMISTRY

By L. ALURL

CONTENTS INTRODUCTION TO INDIAN OCEAN BIOGEOCHEMICAL PROCESSES AND ECOLOGICAL VARIABILITY CURRENT UNDERSTANDING AND EMERGING PERSPECTIVES 1 BIOPHYSICAL PROCESSES IN THE INDIAN OCEAN 9 WHAT DRIVES THE BIOLOGICAL PRODUCTIVITY OF THE NORTHERN INDIAN OCEAN 33 MONSOONS ISLANDS AND EDDIES THEIR EFFECTS ON PHYTOPLANKTON IN THE INDIAN OCEAN 57 IMPACT OF PHYSICAL PROCESSES ON CHLOROPHYLL DISTRIBUTION IN THE BAY OF BENGAL 71 WINTERTIME CONVECTION AND VENTILATION OF THE UPPER PYCNOCLINE IN THE NORTHERNMOST ARABIAN SEA 87 BACTERIOPLANKTON ABUNDANCE AND PRODUCTION IN INDIAN OCEAN REGIONS 119 GRAZING PROCESSES AND SECONDARY PRODUCTION IN THE ARABIAN SEA A SIMPLE FOOD WEB SYNTHESIS WITH MEASUREMENT CONSTRAINTS 133 PHYSICAL AND BIOGEOCHEMICAL CONTROLS OF THE PHYTOPLANKTON SEASONAL CYCLE IN THE INDIAN OCEAN A MODELING STUDY 147 DINITROGEN FIXATION IN THE INDIAN OCEAN 167 DISTRIBUTION AND RELATIVE QUANTIFICATION OF KEY GENES INVOLVED IN FIXED NITROGEN LOSS FROM THE ARABIAN SEA OXYGEN MINIMUM ZONE 187 NITROUS OXIDE IN THE INDIAN OCEAN 205 DISSOLVED ORGANIC CARBON IN THE CARBON CYCLE OF THE INDIAN OCEAN 217 CHALLENGES FOR PRESENT AND FUTURE ESTIMATES OF ANTHROPOGENIC CARBON IN THE INDIAN OCEAN 231 NET COMMUNITY PRODUCTION IN THE NORTHERN INDIAN OCEAN 239 IMPACT OF REGIONAL INDIAN OCEAN CHARACTERISTICS ON THE BIOGEOCHEMICAL VARIABILITY OF SETTLING PARTICLES 257 CARBON CYCLING IN THE MESOPELAGIC ZONE OF THE CENTRAL ARABIAN SEA RESULTS FROM A SIMPLE MODEL 281 RATES AND REGULATION OF MICROBIALLY MEDIATED AEROBIC AND ANAEROBIC CARBON OXIDATION REACTIONS IN CONTINENTAL MARGIN SEDIMENTS FROM THE NORTHEASTERN ARABIAN SEA PAKISTAN MARGIN 299 IS D15N OF SEDIMENTARY ORGANIC MATTER A GOOD PROXY FOR PALEODENITRIFICATION IN COASTAL WATERS OF THE EASTERN ARABIAN SEA 321 SEASONAL ANOXIA OVER THE WESTERN INDIAN CONTINENTAL SHELF 333 UNUSUAL BLOOMS OF THE GREEN NOCTILUCA MILIARIS DINOPHYCEAE IN THE ARABIAN SEA DURING THE WINTER MONSOON 347 MONSOONAL AND ENSO IMPACTS ON PARTICLE FLUXES AND THE BIOLOGICAL PUMP IN THE INDIAN OCEAN 365 BASIN WIDE MODIFICATION OF DYNAMICAL AND BIOGEOCHEMICAL PROCESSES BY THE POSITIVE PHASE OF THE INDIAN OCEAN DIPOLE DURING THE SEAWIFS ERA 385 INDIAN OCEAN RESEARCH OPPORTUNITIES AND CHALLENGES 409