  We investigate time-series obtained from gyrofluid simulations in coupled
edge/scrape-off layer turbulence characteristic for fusion edge-region plasmas.
Blob birth near the separatrix produces intermittent signals whose statistics
depend on the ion mass of the reactor fuel, pointing towards overall slower
dynamics for heavier isotopes. We find that a recently established shot-noise
stochastic model for scrape-off layer fluctuations coincides reasonably well
with the numerical simulations performed in this contribution.
