Biogeochemistry

  1. Aquatic Ecosystem Biogeochemistry
    1. Freshwater Systems
      1. Lake Biogeochemistry
        1. Physical Structure
          1. Thermal Stratification
            1. Light Attenuation
              1. Mixing Processes
              2. Chemical Gradients
                1. Oxygen Profiles
                  1. Nutrient Distributions
                    1. pH Variations
                    2. Biological Processes
                      1. Primary Production
                        1. Decomposition
                          1. Food Web Dynamics
                          2. Eutrophication
                            1. Nutrient Loading
                              1. Algal Blooms
                                1. Oxygen Depletion
                                  1. Management Strategies
                                  2. Sediment Processes
                                    1. Organic Matter Burial
                                      1. Nutrient Release
                                        1. Redox Chemistry
                                      2. Stream and River Biogeochemistry
                                        1. Flow Characteristics
                                          1. Discharge Variability
                                            1. Velocity Effects
                                              1. Turbulence
                                              2. Nutrient Spiraling
                                                1. Uptake Length
                                                  1. Turnover Rate
                                                    1. Downstream Transport
                                                    2. Riparian Interactions
                                                      1. Leaf Litter Inputs
                                                        1. Shading Effects
                                                          1. Groundwater Exchange
                                                          2. Human Impacts
                                                            1. Dam Effects
                                                              1. Agricultural Runoff
                                                                1. Urban Inputs
                                                              2. Groundwater Biogeochemistry
                                                                1. Groundwater Chemistry
                                                                  1. Major Ion Composition
                                                                    1. Trace Elements
                                                                      1. Organic Compounds
                                                                      2. Microbial Processes
                                                                        1. Anaerobic Metabolism
                                                                          1. Contaminant Degradation
                                                                          2. Contaminant Transport
                                                                            1. Advection
                                                                              1. Dispersion
                                                                                1. Sorption
                                                                                  1. Biodegradation
                                                                              2. Marine Systems
                                                                                1. Coastal Biogeochemistry
                                                                                  1. Estuarine Processes
                                                                                    1. Salinity Gradients
                                                                                      1. Mixing Zones
                                                                                        1. Particle Dynamics
                                                                                        2. Riverine Inputs
                                                                                          1. Freshwater Discharge
                                                                                            1. Sediment Loading
                                                                                              1. Nutrient Delivery
                                                                                              2. Tidal Effects
                                                                                                1. Tidal Mixing
                                                                                                  1. Intertidal Exposure
                                                                                                  2. Salt Marsh Biogeochemistry
                                                                                                    1. Halophyte Adaptations
                                                                                                      1. Sulfur Cycling
                                                                                                        1. Carbon Sequestration
                                                                                                        2. Mangrove Biogeochemistry
                                                                                                          1. Root Adaptations
                                                                                                            1. Organic Matter Export
                                                                                                              1. Nutrient Cycling
                                                                                                            2. Open Ocean Biogeochemistry
                                                                                                              1. Physical Oceanography
                                                                                                                1. Ocean Circulation
                                                                                                                  1. Upwelling and Downwelling
                                                                                                                    1. Mixed Layer Dynamics
                                                                                                                    2. Nutrient Limitation
                                                                                                                      1. Nitrogen Limitation
                                                                                                                        1. Phosphorus Limitation
                                                                                                                          1. Iron Limitation
                                                                                                                            1. Silicon Limitation
                                                                                                                              1. Co-limitation
                                                                                                                              2. Biological Pump
                                                                                                                                1. Export Production
                                                                                                                                  1. Particle Flux
                                                                                                                                    1. Remineralization Profiles
                                                                                                                                      1. Efficiency Factors
                                                                                                                                      2. Microbial Loop
                                                                                                                                        1. Dissolved Organic Matter
                                                                                                                                          1. Bacterial Production
                                                                                                                                            1. Protozoan Grazing
                                                                                                                                          2. Deep Ocean Biogeochemistry
                                                                                                                                            1. Deep Water Masses
                                                                                                                                              1. Water Mass Properties
                                                                                                                                                1. Circulation Patterns
                                                                                                                                                  1. Age Dating
                                                                                                                                                  2. Benthic Processes
                                                                                                                                                    1. Sediment-Water Interface
                                                                                                                                                      1. Bioturbation
                                                                                                                                                        1. Diagenesis
                                                                                                                                                        2. Hydrothermal Vents
                                                                                                                                                          1. Chemosynthetic Communities
                                                                                                                                                            1. Metal Cycling
                                                                                                                                                              1. Heat and Chemical Fluxes
                                                                                                                                                              2. Cold Seeps
                                                                                                                                                                1. Methane Seepage
                                                                                                                                                                  1. Sulfide Oxidation
                                                                                                                                                                    1. Carbonate Precipitation

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                                                                                                                                                              10. Terrestrial Ecosystem Biogeochemistry

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                                                                                                                                                              12. Analytical Methods and Techniques