How do you interpret this?
My guess is:
Greater than 8 surfactant molecules are required to form a functional micelle.
Non-ionic surfactant behaviour is affected by solution temperature.
Ionic surfactant behaviour is affected by electrolytes in solution.
Seems reasonable :)
What it really means is that you need at least 8 carbons in your alkyl chain before you start to form stable micelles. It isn't impossible for C7 compounds to do it but http://pubs.acs.org/doi/abs/10.1021/jm00228a025" [Broken]
The other part of your notes can be interpreted as: As you change the temperature in solutions of non-ionic surfactants you can see different behavior (different behavior = changes in CMC for example). In ionic surfactants, electrolytes can cause these changes as well (as does temperature but they are not as sensitive to temperature as the non-ionic ones).
Separate names with a comma.