Indian Ocean Biogeochemical Processes and Ecological Variability: (185 Geophysical Monograph Series)

Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 185. Indian Ocean Biogeochemical Processes and Ecological Variability provides a synthesis of current knowledge on Indian Ocean biogeochemistry and ecology and an introduction to new concepts and topical paradigm challenges. It also reports on the development of more extensive/frequent observational capacity being deployed in the Indian Ocean. This represents the first collection of syntheses that emphasize a basin-wide perspective, and the contributing authors include some of the most esteemed oceanographers and Indian Ocean experts in the world. The volume is derived from invited plenary talks that were presented at the initial Sustained Indian Ocean Biogeochemistry and Ecosystem Research (SIBER) workshop held at the National Institute of Oceanography (NIO) in Goa, India, in October 2006. The volume discusses The overlying physical processes set by monsoonal forcing and how these control biological production and variability Nutrient cycling and limitation Pelagic carbon cycling and air-sea exchange Benthic biogeochemistry and ecology The impact of climate and human activities on biogeochemistry and ecosystems. The readership for this book will consist of academic and governmental researchers interested in exploring how oceanographic, atmospheric, and hydrological processes combine to establish the environmental setting that supports and drives the pelagic system and which are especially relevant to understanding the complex biogeochemical and ecological interactions in the Indian Ocean.

Table of Contents:
Preface Raleigh R. Hood, S. Wajih A. Naqvi, and Jerry D. Wiggert vii Introduction to Indian Ocean Biogeochemical Processes and Ecological Variability: Current Understanding and Emerging Perspectives Jerry D. Wiggert, Raleigh R. Hood, S. Wajih A. Naqvi, Kenneth H. Brink, and Sharon L. Smith 1 Biophysical Processes in the Indian Ocean J. P. McCreary, R. Murtugudde, J. Vialard, P. N. Vinayachandran, J. D. Wiggert, R. R. Hood, D. Shankar, and S. Shetye 9 What Drives the Biological Productivity of the Northern Indian Ocean? S. Prasanna Kumar, Jayu Narvekar, M. Nuncio, M. Gauns, and S. Sardesai 33 Monsoons, Islands, and Eddies: Their Effects on Phytoplankton in the Indian Ocean John Marra and Thomas S. Moore II 57 Impact of Physical Processes on Chlorophyll Distribution in the Bay of Bengal P. N. Vinayachandran 71 Wintertime Convection and Ventilation of the Upper Pycnocline in the Northernmost Arabian Sea Karl Banse and James R. Postel 87 Bacterioplankton Abundance and Production in Indian Ocean Regions N. Ramaiah, V. Fernandes, V. V. Rodrigues, J. T. Paul, and M. Gauns 119 Grazing Processes and Secondary Production in the Arabian Sea: A Simple Food Web Synthesis With Measurement Constraints Michael R. Landry 133 Physical and Biogeochemical Controls of the Phytoplankton Seasonal Cycle in the Indian Ocean: A Modeling Study Vamara Koné, Olivier Aumont, Marina Lévy, and Laure Resplandy 147 Dinitrogen Fixation in the Indian Ocean Margaret R. Mulholland and Douglas G. Capone 167 Distribution and Relative Quantification of Key Genes Involved in Fixed Nitrogen Loss From the Arabian Sea Oxygen Minimum Zone Amal Jayakumar, S. Wajih A. Naqvi, and Bess B. Ward 187 Nitrous Oxide in the Indian Ocean Hermann W. Bange 205 Dissolved Organic Carbon in the Carbon Cycle of the Indian Ocean Dennis A. Hansell 217 Challenges for Present and Future Estimates of Anthropogenic Carbon in the Indian Ocean C. Goyet and F. Touratier 231 Net Community Production in the Northern Indian Ocean V. V. S. S. Sarma 239 Impact of Regional Indian Ocean Characteristics on the Biogeochemical Variability of Settling Particles Daniela Unger and Tim Jennerjahn 257 Carbon Cycling in the Mesopelagic Zone of the Central Arabian Sea: Results From a Simple Model Thomas R. Anderson and Vladimir A. Ryabchenko 281 Rates and Regulation of Microbially Mediated Aerobic and Anaerobic Carbon Oxidation Reactions in Continental Margin Sediments From the Northeastern Arabian Sea (Pakistan Margin) Gareth T. W Law, Gregory L. Cowie, Eric R. Breuer, Matthew C. Schwartz, S. Martyn Harvey, Clare Woulds, Tracy M. Shimmield, Graham B. Shimmield, and Kathleen A. Doig 299 Is δ15N of Sedimentary Organic Matter a Good Proxy for Paleodenitrification in Coastal Waters of the Eastern Arabian Sea? Rajesh Agnihotri, S. Wajih A. Naqvi, Siby Kurian, Mark A. Altabet, and J. F. Bratton 321 Seasonal Anoxia Over the Western Indian Continental Shelf S. Wajih A. Naqvi, Hema Naik, Amal Jayakumar, Anil K. Pratihary, Gayatri Narvenkar, Siby Kurian, Rajesh Agnihotri, M. S. Shailaja, and Pradip V. Narvekar 333 Unusual Blooms of the Green Noctiluca miliaris (Dinophyceae) in the Arabian Sea During the Winter Monsoon Helga do Rosario Gomes, S. G. Prabhu Matondkar, Sushma G. Parab, Joaquim I. Goes, Suraksha Pednekar, Adnan R. N. AI-Azri, and Prasad G. Thoppil 347 Monsoonal and ENSO Impacts on Particle Fluxes and the Biological Pump in the Indian Ocean T. Rixen, V. Ramaswamy, B. Gaye, B. Herunadi, E. Maier-Reimer, H. W. Bange, and V. Ittekkot 365 Basin-Wide Modification of Dynamical and Biogeochemical Processes by the Positive Phase of the Indian Ocean Dipole During the SeaWiFS Era Jerry D. Wiggert, Jérôme Vialard, and Michael J. Behrenfeld 385 Indian Ocean Research: Opportunities and Challenges Raleigh R. Hood, Jerry D. Wiggert, and S. Wajih A. Naqvi 409 Index 429

About the Author :
Jerry D. Wiggert and Raleigh R. Hood are the authors of Indian Ocean Biogeochemical Processes and Ecological Variability, published by Wiley.