Soils Geography

  1. Biological Properties and Soil Organisms
    1. Soil Biota Classification
      1. Macrofauna
        1. Earthworms
          1. Ecological Functions
            1. Casting Production
              1. Burrow Formation
              2. Arthropods
                1. Termites
                  1. Ants
                    1. Beetles
                    2. Vertebrates
                      1. Burrowing Mammals
                        1. Soil Disturbance
                      2. Mesofauna
                        1. Mites
                          1. Springtails
                            1. Enchytraeids
                            2. Microfauna
                              1. Nematodes
                                1. Feeding Groups
                                  1. Population Dynamics
                                  2. Protozoa
                                    1. Flagellates
                                      1. Amoebae
                                        1. Ciliates
                                        2. Rotifers
                                        3. Microorganisms
                                          1. Bacteria
                                            1. Heterotrophic Bacteria
                                              1. Autotrophic Bacteria
                                                1. Nitrogen-Fixing Bacteria
                                                2. Fungi
                                                  1. Saprophytic Fungi
                                                    1. Mycorrhizal Fungi
                                                      1. Pathogenic Fungi
                                                      2. Actinomycetes
                                                        1. Algae and Cyanobacteria
                                                      3. Biological Processes in Soil
                                                        1. Organic Matter Decomposition
                                                          1. Litter Breakdown
                                                            1. Enzymatic Processes
                                                              1. Mineralization Rates
                                                              2. Nutrient Cycling
                                                                1. Nitrogen Transformations
                                                                  1. Phosphorus Mobilization
                                                                    1. Sulfur Cycling
                                                                      1. Micronutrient Cycling
                                                                      2. Soil Structure Development
                                                                        1. Aggregate Formation
                                                                          1. Binding Agent Production
                                                                            1. Pore Creation
                                                                            2. Bioturbation
                                                                              1. Soil Mixing
                                                                                1. Horizon Development
                                                                                  1. Profile Modification
                                                                                2. Soil Food Web Dynamics
                                                                                  1. Energy Flow Pathways
                                                                                    1. Bacterial Channel
                                                                                      1. Fungal Channel
                                                                                      2. Trophic Interactions
                                                                                        1. Primary Decomposers
                                                                                          1. Secondary Consumers
                                                                                            1. Predators
                                                                                            2. Nutrient Release Mechanisms
                                                                                              1. Microbial Turnover
                                                                                                1. Predation Effects

                                                                                            Previous

                                                                                            4. Chemical Properties of Soil

                                                                                            Go to top

                                                                                            Next

                                                                                            6. Soil Formation Processes and Factors