BIOL241 Final: Unit 2- Microbial Ecology
1 Apr 2016
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Document Summary
Energy flow and materials cycling in the ecosystem: we think of ecosystem (ie humans have exis in gut) Population: usually dealing with populations (binary fission identical) community for example: microbial inhabitants of a freshwater lake ecosystem. Microbial communities consist of populations of cells of different species. A freshwater lake ecosystem, for example, would likely have the communities shown here. The reduction of co2, so4 2-, s0 , no3 -, and fe3+ are examples of anaerobic respirations. The region of greatest activity for each of the different respiratory processes would differ with depth in the sediment. As more energetically favorable electron acceptors are depleted by microbial activity near the surface, less favorable. Biol241 page 1 acceptors are depleted by microbial activity near the surface, less favorable reactions occur deeper in the sediment. Take inorganic carbon split to (unicellular green algae, cyanobact) C2 oxic zones: aerobes (some( and facultative aerobes. Can grow on organic matter and oxygen i shtt terminate acc.
