UID:
edocfu_9960074058102883
Umfang:
1 online resource (712 p.)
Ausgabe:
2nd ed.
ISBN:
0-12-407153-8
Inhalt:
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 biogeoch
Anmerkung:
Description based upon print version of record.
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Front Cover; Biogeochemistry of Marine Dissolved Organic Matter; Copyright; Dedication; Contents; List of Contributors; Foreword; References; Preface; Chapter 1: Why Dissolved Organics Matter: DOC in Ancient Oceans and Past Climate Change ; I. Overview; II. Marine Carbon Cycling; A. A Tale of Three Ocean Carbon "Pumps"; B. A Fourth Appears-The Microbial Carbon Pump; III. Interpreting the Geological Past; A. Carbon Isotopes as Proxies for Past Global Carbon Cycle Changes; B. Reconstructing Past Steady-State Modes of Global Carbon Cycling; C. Interpreting Transient Carbon Cycle Perturbations
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D. Ocean DOC and Ancient Carbon Cycling: An Example from the Paleocene and EoceneE. Ocean DOC and Ancient Carbon Cycling: An Example from the Precambrian; IV. Implications for Future Global Change?; Acknowledgements; References; Chapter 2: Chemical Characterization and Cycling of Dissolved Organic Matter; I. Introduction; II. Isolation of DOM from Seawater; A. Isolation of Hydrophobic DOM by Solid-Phase Extraction; B. Isolation of High Molecular Weight DOM by Ultrafiltration; C. Isolation of DOM by Reverse Osmosis/Electrically Assisted Dialysis; III. Chemical Characterization of DOM
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A. Polysaccharides in DOMB. Proteins and Amino Acids in DOM; C. Humic Substances in Solid-Phase Extractable DOM (SPE-DOM); 1. Characterization of SPE-DOM by High-Field NMR; 2. Characterization of SPE-DOM by High-Resolution MS; IV. Links Between DOM Composition and Cycling; A. Composition and the Cycling of Labile DOM; B. Composition and the Cycling of Semi-Labile DOM; C. Composition and the Cycling of Refractory DOM; V. Future Research; Acknowledgments; References; Chapter 3: DOM Sources, Sinks, Reactivity, and Budgets; I. Introduction; II. DOM Production Processes
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A. Extracellular Phytoplankton Production1. Extracellular Release Models; a. Overflow Model; b. Passive Diffusion Mode; c. Model Comparison; 2. Experimental and Field Observations; a. Using Radioisotopic Tracers; b. Microcosm, Mesocosm, and Field Observations; c. ER Quality and Transparent Exopolymer Particles; B. Grazer-Induced DOM Production; 1. Herbivory; a. Mesozooplankton; b. Microzooplankton; 2. Omnivory and Carnivory; 3. Bacterivory; 4. Biogeochemical Significance; C. DOM Production via Cell Lysis; 1. Viral Lysis and the Viral Shunt; a. Biogeochemical Significance; 2. Bacterial Lysis
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3. AllelopathyD. Solubilization of Particles; E. Prokaryote Production of DOM; 1. Chemoautotrophy; 2. Chemoheterotrophy; III. DOM Removal Processes; A. Biotic Consumption of DOM; 1. Prokaryotes; a. Bacterial Growth Efficiency; b. Bacterial Carbon Demand; c. Photoheterotrophy; 2. Eukaryotes; B. Abiotic Removal Processes; 1. Phototransformation; 2. Sorption of DOM onto Particles; 3. Condensation of Marine Microgels; 4. Hydrothermal Circulation; IV. DOM Accumulation; A. Abiotic Formation of Biologically Recalcitrant DOM; B. Biotic Formation of Recalcitrant DOM; 1. Microbial Carbon Pump
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a. Direct Source via the MCP
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English
Weitere Ausg.:
ISBN 0-12-405940-6
Sprache:
Englisch
