Contributors |
Preface |
Sources and Composition / Section 1: |
Supply of Dissolved Organic Matter to Aquatic Ecosystems: Autochthonous Sources / Stefan Bertilsson ; Jeremy B. Jones, Jr.1: |
Introduction / I.: |
Algal Sources of Dissolved Organic Matter / II.: |
Macrophyte Production of Dissolved Organic Matter / III.: |
Summary / IV.: |
References |
Sources, Production, and Regulation of Allochthonous Dissolved Organic Matter Inputs to Surface Waters / J. A. Aitkenhead-Peterson ; W. H. McDowell ; J. C. Neff2: |
Source, Production, and Fractions of Dissolved Organic Matter |
Regulation of Allochthonous Dissolved Organic Carbon and Dissolved Organic Nitrogen |
Trace Organic Moieties of Dissolved Organic Material in Natural Waters / D. M. McKnight ; E. Hood ; L. Klapper3: |
Tracers of the Source of DOM in Aquatic Ecosystems |
Biogeochemical Processes: Interactions with Mineral Surfaces |
Biogeochemical Processes: Surface Water to Sediments |
Conclusions / V.: |
The Role of Monomers in Stream Ecosystem Metabolism / L. A. Kaplan ; J. D. Newbold4: |
Monomer Sources and Concentrations |
Factors Affecting Biological Lability |
Molecular Indicators of the Bioavailability of Dissolved Organic Matter / R. Benner5: |
Chemical Composition of Dissolved Organic Matter |
Bioreactivity of Dissolved Organic Matter |
Relationships between the Chemical Composition and Bioreactivity of Dissolved Organic Matter |
Large-Scale Patterns in Dissolved Organic Carbon Concentration, Flux, and Sources / P. J. Mulholland6: |
Dissolved Organic Carbon Concentrations |
Dissolved Organic Carbon Exports in Rivers and Streams |
Sources of Dissolved Organic Carbon |
Synthesis and Future Research Needs |
The Speciation of Hydrophobic Organic Compounds by Dissolved Organic Matter / Yu-Ping Chin7: |
Theoretical Considerations |
Analytical Methods for Measuring K[subscript dom] |
The Effect of Dissolved Organic Matter Composition on Hydrophobic Organic Contaminant Speciation |
Effects of Dissolved Organic Matter on Hydrophobic Organic Contaminant Bioavailability to Aquatic Organisms |
Elemental Complexation by Dissolved Organic Matter in Lakes: Implications for Fe Speciation and the Bioavailability of Fe and P / R. Maranger ; M. J. PullinVI.: |
Biological Importance of Fe |
Biological Fe Demand in Brown- versus Clear-Water Systems |
DOM and Fe Chemistry in Freshwater |
The DOM-Fe-P Complex in Lakes |
Factors Influencing the Bioavailability of Fe and P Bound to DOM |
Elemental Acquisition in Humic Lakes: Implications for Ecosystem Structure and Function / VII.: |
Transformation and Regulation / VIII.: |
The Contribution of Monomers and Other Low-Molecular Weight Compounds to the Flux of Dissolved Organic Material in Aquatic Ecosystems / D. L. Kirchman9: |
Uptake of Amino Acids and Glucose |
Uptake of Other Monomers and LMW Compounds: Organic Acids |
Respiration of Monomers |
Coupling Polymer Hydrolysis and Monomer Uptake |
Specific Bacteria Using Amino Acids and Protein: Functional Groups of Heterotrophic Bacteria |
Heterotrophic Bacteria as More Than One Functional Group: Does It Matter? |
Unknowns, Unresolved Issues, and Conclusions |
Photochemically Mediated Linkages between Dissolved Organic Matter and Bacterioplankton / M. A. Moran ; J. S. Covert10: |
Is Dissolved Organic Matter Photoproduct Formation Predictable? |
Is Dissolved Organic Matter Photoproduct Formation Ecologically Significant? |
Photochemical Modifications of Dissolved Organic Nitrogen and Dissolved Organic Phosphorus |
The Importance of Organic Nitrogen Production in Aquatic Systems: A Landscape Perspective / N. F. Caraco ; J. J. Cole11: |
Model |
System Results |
Discussion |
The Role of Biofilms in the Uptake and Transformation of Dissolved Organic Matter / Helmut Fischer12: |
Biofilm Structure |
Supply of Dissolved Organic Matter to Biofilm Bacteria |
Effects of the Biofilm on Microbial Activity |
Effects of Dissolved Organic Matter Quality and Quantity on the Activity of Biofilm Bacteria |
Ecosystem Consequences |
Microbial Extracellular Enzymes and Their Role in Dissolved Organic Matter Cycling / C. Arnosti13: |
The Role of Extracellular Enzymes in Carbon Remineralization |
Biochemical Aspects of Enzyme Production and Activity |
Measuring Enzyme Activities in Aquatic Systems |
Extracellular Enzyme Activities in the Water Column and Sediment |
Patterns of Enzyme Activities |
Relationships between Hydrolysis and Uptake |
Some Key Questions |
Research Needs |
Linkages between Dissolved Organic Matter Composition and Bacterial Community Structure / C. M. Foreman14: |
Methodological Shift |
Relationship between Bacterial Community Structure and Dissolved Organic Matter Composition |
Bacterial Response to Variation in Dissolved Organic Matter / S. Findlay15: |
Bacterial Response Variables |
Time Scale and Scope of Bacterial Response Variables |
Approaches to Synthesis / Section 3: |
Physiological Models in the Context of Microbial Food Webs / T. Frede Thingstad16: |
Trophic Mechanisms Controlling Bacterial Consumption |
Organic Forms of Limiting Element (Labile Dissolved Organic Nitrogen and Dissolved Organic Phosphorus) |
Bacterial Physiology |
Dissolved Organic Matter Production Side |
Patterns in Dissolved Organic Matter Lability and Consumption across Aquatic Ecosystems / P. A. del Giorgio ; J. Davis17: |
Data Collection |
Data Analysis |
Patterns of Dissolved Organic Matter Lability among Systems |
Lability of Specific Types of Dissolved Organic Matter |
Cross-System Patterns in Dissolved Organic Matter Consumption |
Patterns of Lability along Dissolved Organic Matter Gradients |
Temporal Patterns in Dissolved Organic Matter Lability |
Bioassay versus Metabolic Estimates of Dissolved Organic Matter Consumption / IX.: |
Factors That Influence Dissolved Organic Matter Lability in Bioassays / X.: |
Integrating Dissolved Organic Matter Metabolism and Microbial Diversity: An Overview of Conceptual Models / R. L. SinsabaughXI.: |
Community Structure Domain |
Biogeochemical Domain |
Trophic Domain |
Dissolved Organic Carbon: Detrital Energetics, Metabolic Regulators, and Drivers of Ecosystem Stability of Aquatic Ecosystems / Robert G. Wetzel19: |
Seven Directions of DOM Thought and Understanding |
Dissolved Organic Matter: Out of the Black Box into the Mainstream / 20: |
DOM-Microbial Interactions |
DOM-Physicochemical Interactions |
Contributors |
Preface |
Sources and Composition / Section 1: |
Supply of Dissolved Organic Matter to Aquatic Ecosystems: Autochthonous Sources / Stefan Bertilsson ; Jeremy B. Jones, Jr.1: |
Introduction / I.: |
Algal Sources of Dissolved Organic Matter / II.: |