T14+Slides - Soil Organisms - Topic #14 Gaseous...

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Soil Organisms - Topic #14 Organisms found in 1 gram of soil Bacteria 3,000,000 to 500,000,000 Actinomycetes 1,000,000 to 20,000,000 Fungi 5,000 to 1,000,000 Yeasts 1,000 to 100,000 Protozoa 1,000 to 500,000 Algae 1,000 to 500,000 Nematodes 10 to 5,000 Microbes Litter Soil Organic Matter Vegetation Mycorrhizae Decomposition Soil Solution Primary minerals Secondary minerals Weathering Synthesis Litterfall U p t a k e Sorbed S o rp tio n D s Leaching Exchangeable Ions Exchange Im m b iliz M in ra liz L f w h E x u d Gaseous Inputs/Outputs Atmospheric Deposition Wet Dry Atmosphere Biosphere Geosphere Hydrosphere Mesofauna–mites Microfauna – nematodes, protozoa Macroflora – vascular plants Microflora – algae, fungi, bacteria Autotrophs Utilize CO 2 as their sole source of carbon and obtain their energy from solar radiation (photoautotrophs) or oxidation of inorganic compounds (chemoautotrophs) Heterotrophs (decomposers) Derive their energy from the decompostion of organic compounds
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This note was uploaded on 01/27/2011 for the course SSO 10 taught by Professor Randydahlgren during the Fall '10 term at UC Davis.

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T14+Slides - Soil Organisms - Topic #14 Gaseous...

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