Microbial Group and Principle of Microbial Ecology.

 Microbial group is based on size of population and not individual growth. The methods of microbial growth are;

Binary fission--budding--fragmentation--formation of spores--sexual reproduction.

 

The physical growth requirements are;

light--temperature--pH--water activity and osmotic pressure.

The chemical growth requirements are;

water--carbon--oxygen--nitrogen,phosphorus,sulfur--special growth factors--trace elements

 

 There are 2 major nutritional concern; 

source of energy and source of carbon(light, carbon dioxide, organic molecules,inorganic molecules)

 

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We learned about what is ecology and the hierarchy

(species--populations--communities--ecosystems--biosphere)

 

Homeostasis is dynamic balance of processes materials and organisms in the ecosystem and biosphere. 

 But, how to balance the ecosystem?

 

The flow of energy balance the ecosystem.

 

This flow of energy starts with producers--consumers--decomposers.

And there are few important things about energy; energy itself does not recycle-- it cannot be created or destroyed, but it can be transferred. However, conversion of energy is never 100% efficient.