Microbial Ecology

Microbial Ecology PowerPoint PPT Presentation


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2. The role of microorganisms ?. producers. consumers. decomposers. . . . - the decomposition of pollutants and toxic wastes- the efficient utilization of limited natural resources- transformations of chemical substances that can be used by other organisms. Help in. . 3. Carbon Cycle. critical

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Microbial Ecology

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1. 1 Microbial Ecology

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13. 13 Microbes and Soil soil consists of organic and mineral matter and capable of supporting life soil characteristics depend on 1. Climate and availability of water 2. Geologic age (young-old) 3. Biological inhabitants

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15. 15 they are responsible for many of the biochemical changes in soil the most common soil bacteria : Arthrobacter, Bacillus, Pseudomonas, Agrobacterium, Alcaligenes, Flavobacterium, Streptomyces, and Nocardia (Actinomyces)

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19. 19 Algae eucaryotic algae and cyanobacteria are found in the upper layers of soil algae do not require a source of organic carbon because …????… light accessibility, N, and P are the limiting factor in the distribution of algae

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21. 21 are found in greatest abundance near the soil surface (104 -105 cells) why ? Protozoa

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26. 26 Mycorrhiza

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30. 30 Microbial Leaching

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37. 37 Rivers also receive high concentration of bacteria and agricultural chemicals through surface runoff water Rivers can be polluted with sewage bacteria esp. E. coli, Enterococcus faecalis, Proteus vulgaris, Clostridium sp., and other intestinal bacteria

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40. 40 Quality of Water less than 2 % of the world water is potable fresh water is a precious resource that must be conserved and closely monitored Chemical and biological contaminants affect the quality of water

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47. 47 Biological Wastewater Treatment

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