11-Microbiology_Water_Mar12

Aerobic and facultave organisms oxidize organic maper

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: lake (nutrient rich) •  BoPom sediments are anaerobic and contain organic maPer (dead primary producers, etc.) which support the growth of denitrifiers, methanogens and sulfate reducers (H2S). •  Anaerobic photosynthesis uses H2S as electron donor and produces sulfate, which is used by sulfate reducers. •  Excessive produc<on of H2S and the produc<on of organic acids from fermenta<on can give the water a bad odor. The lack of oxygen and/or presence of H2S may kill fish and other aerobic organisms. 17 Lakes in temperate climates •  Anaerobic zones may develop as a result of summer stra<fica<on. Lakes become thermally stra<fied. •  As the air temperature increases, the surface water is warmed resul<ng in the forma<on of a warm upper layer – epilimnion – less dense, aerobic. •  The colder, boPom layer – hypolimnion, denser, anaerobic – is separated from the epilimnion by a zone of rapid temp. change – thermocline. •  Mixi...
View Full Document

This note was uploaded on 03/20/2014 for the course PSYC 101 taught by Professor Catone during the Spring '07 term at CSU Fullerton.

Ask a homework question - tutors are online