Success of natural tree regeneration was studied in urban forest of Ljubljana. The canopy gap, which emerged during the ice storm in 2014 was located under Rožnik hilly area. On the same plots the measurements were already performed during the growing season in 2014 before and in 2015 after the salvage logging. Data for this study were acquired in 2016 and were then compared to the data from 2015. Measurements of regeneration tree species composition, density and height distribution were performed on 19 sample plots. The density of seedlings was reduced from 130,460 to 89,045, but was still estimated to be sufficient for normal stand development. The regeneration was of good quality. The reduction of the densities was attributed to more extreme ecological conditions inside regeneration layer in heights up to 50 cm. The proportion of bramble coverage increased distinctively, for it was present on almost 70 % of the surface. Invasive black locust and the tree of heaven were also present among the young trees. Black locust was especially successful in recruiting into upper regeneration layers.
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