11-Microbiology_Water_Mar12

Rate of oxygen dissoluon is higher than the consumpon

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Unformatted text preview: 1p7082340/fulltext.html Life in the extreme deep sea 11 hPp://www.youtube.com/watch?v=RxUZM- cLtGg Hydrothermal vent •  Source of heat, source of nutrients, electron donors, electron acceptors. •  Community of microorganisms, animals. •  Tube worms: symbiosis with sulfur oxidizing chemoautotrophs. Tube worms trap and transport nutrients to the bacterial symbionts. 12 Brock Biology of Microorganisms, 13th Edi<on. Hydrothermal vent hPp://www.youtube.com/watch?v=k0QsEpjLwPE&feature=related 13 Freshwater environment •  Highly variable (isolated system compared to ocean) •  Microbial popula<ons will depend on the availability of nutrients, and the availability of light and oxygen. Limited by the availability of nitrogen and phosphorus. •  Lakes (poor mixing/aera<on) •  Rivers (good mixing/aera<on) 14 Oligotrophic lakes...
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