10 - Decomposition - Decomposition Decomposition Many...

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Decomposition
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Decomposition Many organisms are very beneficial in ecosystems as decomposers. Breakdown of organic matter recycles nutrients Decomposition = important for recycling of C and energy, as well as all nutrient elements (N, P, K, etc.).
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Types of Decomposition Abiotic processes - fire, etc. OM + O 2 CO 2 , etc. Biotic processes: Aerobic respiration OM + O 2 CO 2 , etc. Anaerobic respiration OM CH 4 , etc. Organisms most directly responsible for decomposition are bacteria and fungi .
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Decomposition Rates Decomposition rates vary (measured in litter bags), depending on: Climate and temperature Soil organisms present Aeration of the soil Composition of the material (C:N ratio) Etc.– season, tillage
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Litter Bag removed from Soil
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Decomposition rates vary (measured in litter bags), depending on: Climate and temperature Soil organisms present Aeration of the soil Composition of the material (C:N ratio)
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This note was uploaded on 03/01/2010 for the course PCB 4683 taught by Professor Williams,j during the Spring '08 term at University of Central Florida.

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10 - Decomposition - Decomposition Decomposition Many...

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