09_Rizzo_Prokaryote_Diversity_Outline - BIS2C W2011 19...

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BIS2C W2011 19 January 2011 Lecture 9 - Prokaryote diversity How to study microbes Some questions people ask about microbes found in various places: o Who are they? (i.e., what kinds of microbes are they) o What are they doing? (i.e., what functions and processes do they possess) The principles here apply to bacteria, archaea and eukaryotic microbes Method 1: Observe in the Field Who are they? o Can look at organisms in a microscope What are they doing? o Can take measurements in the field CO 2 uptake decomposition rates o Can observe changes over time or in response to perturbations o Many other possibilities . .. Some major limitations: o Appearance (e.g., as in a microscope) is not a good indicator of type Rapid divergence erases similarities Frequent convergence creates similarities not due to homology Few character traits to use o Field measurements in complex communities are quite complicated Challenging to determine which organism(s) are responsible
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This note was uploaded on 03/09/2011 for the course BIS 2 taught by Professor Coolprof during the Spring '11 term at Bank Street College of Education.

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09_Rizzo_Prokaryote_Diversity_Outline - BIS2C W2011 19...

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