Electronic conductivity/ electrode potential and microbes

[biologically-yours]

Hello eveyone,

I tried to search the net about this two terms;

1. Electronic conductivity
2. Electrode potential versus standard hydrogen electrode

But i cant still understand what they really mean. Anubody here who can help me explain in a layman' s language the above terms. What is the effect of these two factors on the population of microorganisms in water environment.

Many thanks