Two methods (renormalization and stochastic orbit treatment) are used to discuss the ion and electron coherent responses in a turbulent Tokamak plasma. The ballooning representation for the non linear E*B term is questioned. Some coherent dissipation and saturation mechanisms are studied in detail. Specifically, it is found that the Hirshman-Molvig effect (1979) plays the dominant role in the determination of the diffusion characteristics in the Tokamak geometry. Also, using the averaged radial wave-number vector technique the ion Compton scattering is investigated analytically as an effective saturation mechanism.