Biogeochemistry

  1. The Global Phosphorus Cycle
    1. Phosphorus Reservoirs
      1. Lithospheric Phosphorus
        1. Apatite Minerals
          1. Fluorapatite
            1. Hydroxyapatite
              1. Chlorapatite
              2. Other Phosphate Minerals
                1. Strengite
                  1. Variscite
                2. Soil and Sediment Phosphorus
                  1. Organic Phosphorus
                    1. Phospholipids
                      1. Nucleic Acids
                        1. Phosphoproteins
                          1. Inositol Phosphates
                          2. Inorganic Phosphorus
                            1. Adsorbed Phosphorus
                              1. Precipitated Phosphorus
                                1. Occluded Phosphorus
                              2. Biotic Phosphorus
                                1. Plant Phosphorus
                                  1. Structural Phosphorus
                                    1. Metabolic Phosphorus
                                    2. Microbial Phosphorus
                                      1. Bacterial Phosphorus
                                        1. Fungal Phosphorus
                                      2. Aquatic Phosphorus
                                        1. Dissolved Inorganic Phosphorus
                                          1. Orthophosphate
                                            1. Polyphosphates
                                            2. Dissolved Organic Phosphorus
                                              1. Phosphoesters
                                                1. Phosphonates
                                                2. Particulate Phosphorus
                                                  1. Biogenic Particles
                                                    1. Mineral Particles
                                                3. Phosphorus Processes
                                                  1. Weathering
                                                    1. Apatite Dissolution
                                                      1. Acid Weathering
                                                        1. Biological Weathering
                                                        2. Soil Phosphorus Dynamics
                                                          1. Sorption Processes
                                                            1. Iron and Aluminum Oxides
                                                              1. Clay Minerals
                                                                1. Organic Matter
                                                                2. Precipitation Reactions
                                                                  1. Calcium Phosphates
                                                                    1. Iron Phosphates
                                                                      1. Aluminum Phosphates
                                                                      2. Biological Mobilization
                                                                        1. Phosphatase Enzymes
                                                                          1. Mycorrhizal Associations
                                                                            1. Root Exudates
                                                                          2. Aquatic Phosphorus Cycling
                                                                            1. Uptake by Phytoplankton
                                                                              1. Regeneration in Water Column
                                                                                1. Sediment-Water Exchange
                                                                                  1. Luxury Uptake
                                                                                  2. Transport Processes
                                                                                    1. Riverine Transport
                                                                                      1. Dissolved Transport
                                                                                        1. Particulate Transport
                                                                                          1. Dam Effects
                                                                                          2. Atmospheric Transport
                                                                                            1. Dust Deposition
                                                                                              1. Aerosol Phosphorus
                                                                                            2. Long-term Cycling
                                                                                              1. Sedimentation
                                                                                                1. Diagenesis
                                                                                                  1. Tectonic Uplift

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                                                                                              6. The Global Nitrogen Cycle

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                                                                                              8. The Global Sulfur Cycle