Biogeochemistry of marine dissolved organic matter 2nd Edition by Dennis Hansell, Craig Carlson ISBN 0124059406 978-0124059405

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ISBN 10: 0124059406
ISBN 13: 978-0124059405
Author: Dennis Hansell, Craig Carlson

Marine dissolved organic matter (DOM) is a complex mixture of molecules found throughout the world’s oceans. It plays a key role in the export, distribution, and sequestration of carbon in the oceanic water column, posited to be a source of atmospheric climate regulation. Biogeochemistry of Marine Dissolved Organic Matter, Second Edition, focuses on the chemical constituents of DOM and its biogeochemical, biological, and ecological significance in the global ocean, and provides a single, unique source for the references, information, and informed judgments of the community of marine biogeochemists.

Presented by some of the world’s leading scientists, this revised edition reports on the major advances in this area and includes new chapters covering the role of DOM in ancient ocean carbon cycles, the long term stability of marine DOM, the biophysical dynamics of DOM, fluvial DOM qualities and fate, and the Mediterranean Sea. Biogeochemistry of Marine Dissolved Organic Matter, Second Edition, is an extremely useful resource that helps people interested in the largest pool of active carbon on the planet (DOC) get a firm grounding on the general paradigms and many of the relevant references on this topic.

• Features up-to-date knowledge of DOM, including five new chapters
• The only published work to synthesize recent research on dissolved organic carbon in the Mediterranean Sea
• Includes chapters that address inputs from freshwater terrestrial DOM

Biogeochemistry of marine dissolved organic matter 2nd Table of contents:

Chapter 1: Why Dissolved Organics Matter: DOC in Ancient Oceans and Past Climate Change

Abstract

Acknowledgements

I Overview

II Marine Carbon Cycling

III Interpreting the Geological Past

IV Implications for Future Global Change?

Chapter 2: Chemical Characterization and Cycling of Dissolved Organic Matter

Abstract

Acknowledgments

I Introduction

II Isolation of DOM from Seawater

III Chemical Characterization of DOM

IV Links Between DOM Composition and Cycling

V Future Research

Chapter 3: DOM Sources, Sinks, Reactivity, and Budgets

Abstract

Acknowledgments

I Introduction

II DOM Production Processes

III DOM Removal Processes

IV DOM Accumulation

V DOM Reactivity

VI The Priming Effect

VII Microbial Community Structure and DOM Utilization

VIII DOC in the Ocean Carbon Budget

IX Summary

Chapter 4: Dynamics of Dissolved Organic Nitrogen

Abstract

Acknowledgments

I Introduction

II DON Concentrations in Aquatic Environments

III Composition of the DON Pool

IV Sources of DON to the Water Column

V Sinks for DON

VI Summary

Chapter 5: Dynamics of Dissolved Organic Phosphorus

Abstract

Acknowledgments

I Introduction

II Terms, Definitions, and Concentration Units

III The Early Years of Pelagic Marine P-Cycle Research (1884-1955)

IV The Pelagic Marine P-Cycle: Key Pools and Processes

V Sampling, Incubation, Storage, and Analytical Considerations

VI DOP in the Sea: Variations in Space

VII DOP in the Sea: Variations in Time

VIII DOP Pool Characterization

IX DOP Production, Utilization, and Remineralization

X Conclusions and Prospectus

Chapter 6: The Carbon Isotopic Composition of Marine DOC

Abstract

Acknowledgments

I Introduction

II Carbon Isotope Geochemistry Primer

III DOC Isotope Ratio Methods

IV Isotopic Composition of Bulk Marine DOC

V Isotopic Composition of DOM Constituents

VI Summary and Conclusions

Chapter 7: Reasons Behind the Long-Term Stability of Dissolved Organic Matter

Abstract

Acknowledgments

I Introduction: The Paradox of DOM Persistence

II The Environment Hypothesis

III The Intrinsic Stability Hypothesis

IV The Molecular Diversity Hypothesis

V Concluding Remarks

Chapter 8: Marine Photochemistry of Organic Matter: Processes and Impacts

Abstract

Acknowledgments

I Introduction

II Impact of Photochemistry on Elemental Cycles

III DOM Photolability Spectrum and Fate of Terrestrial DOM in the Sea

IV Impact of Photochemistry on Other Marine Processes

V Modeling Photochemical Rates and Impact on Marine Carbon Cycling

VI Future Directions

Chapter 9: Marine Microgels

Abstract

Acknowledgments

I Introduction

II What Are Polymer Gels?

III Structure, Properties, and Dynamics of Marine Polymer Gels

IV Phase Transition

V Marine Gels in the Atmosphere and Their Relevance for Cloud Formation

Chapter 10: The Optical Properties of DOM in the Ocean

Abstract

Acknowledgments

I Introduction

II UV-Visible Spectroscopy of DOM

III Sources of CDOM to the Marine Environment

IV Removal of CDOM in the Marine Environment

V Distribution

VI Conclusions and Future Research Needs

Chapter 11: Riverine DOM

Abstract

Acknowledgments

I Introduction

II Land Transport

III Riverine DOM Composition

IV Anthropogenic Influences

Chapter 12: Sediment Pore Waters

Abstract

Acknowledgments

I Preface

II Introduction

III Composition and Dynamics of Bulk Pore Water DOM

IV Composition and Dynamics of DOM at the Compound and Compound-Class Levels

V Modeling DOC Cycling in Marine Sediments

VI Controls on DOC Concentrations in Sediments

VII The Role of Benthic DOM Fluxes in the Ocean Carbon and Nitrogen Cycles

VIII Concluding Thoughts

Chapter 13: DOC in the Mediterranean Sea

Abstract

Acknowledgments

I Introduction

II DOC Distribution at Basin Scale

III The Role of DOC in Carbon Export

IV DOC Inventory and Fluxes

V DOM Stoichiometry

VI DOC Dynamics in the Med Sea, a Comparison with the Oceans

VII Summary

VIII Open Questions

Chapter 14: DOM in the Arctic Ocean

Abstract

Acknowledgments

I Introduction

II Composition of DOC Within the Arctic Ocean

III Distribution and Mass Balance of DOM

Chapter 15: Modeling DOM Biogeochemistry

Abstract

Acknowledgments

I Introduction

II Modeling Approaches

III Modeling the Role of DOM in Ocean Biogeochemistry

IV Lability in Focus: Concepts and Definitions

V Discussion

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