We consider the motion of particles and scalar flow in the defect-turb
ulent regime of the complex Ginzburg-Landau field. We find that the pa
rticle motion is diffusion-like at large time scales, whereas the moti
on is dominated by trapping of particles by defects of the field at sh
ort time scales. Consequently the diffusion constant is constrained. F
or relative motion of two paricles we find that at a relative distance
s the distribution of ds(2)/dt is exponential rather than Gaussian as
would be the case for Brownian motion.