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We analyze the clustering properties of ultraviolet selected galaxies byusing GALEX-SDSS data at z<0.6 and CFHTLS deep u' imaging at z=1. Thesedatasets provide a unique basis at z< 1 which can be directly compared withhigh redshift samples built with similar selection criteria. We discuss thedependence of the correlation function parameters (r0, delta) on theultraviolet luminosity as well as the linear bias evolution. We find that thebias parameter shows a gradual decline from high (b > 2) to low redshift (b ~0.79^{+0.1}_{-0.08}). When accounting for the fraction of the star formationactivity enclosed in the different samples, our results suggest that the bulkof star formation migrated from high mass dark matter halos at z>2 (10^12 <M_min < 10^13 M_sun, located in high density regions), to less massive halos atlow redshift (M_min < 10^12 M_sun, located in low density regions). This resultextends the ``downsizing'' picture (shift of the star formation activity fromhigh stellar mass systems at high z to low stellar mass at low z) to the darkmatter distribution.

Clustering Properties of restframe UV selected galaxies II: Migration of Star Formation sites with cosmic time from GALEX and CFHTLS