In the boreal biome, natural disturbances shape vegetation dynamics and forest recovery. However, increasing anthropogenic disturbances raise concerns about their combined effects on forest regeneration. This is especially relevant in Alberta's boreal forest, where oil exploration creates seismic lines that fragment forests and often coincide with forest harvesting. An important question for seismic line restoration is whether forest harvesting can naturally restore composition and structure, potentially eliminating the need for further restoration efforts. We measured the abundance and composition of trees and shrubs at 15 mesic upland forest sites that were recently harvested and contained within them a conventional seismic line. For each site, we compared two pairs of plots on and off seismic lines to inside and outside of forest harvests to test differences in woody stem regeneration and relative abundance in plant communities. We discovered that harvested seismic lines exhibited approximately 130% more woody stems compared to untreated lines adjacent to mature forests, indicating that forest harvesting contributed to the structural recovery of the forest within the line. However, the co-occurrence of both disturbances resulted in an increase in deciduous stem abundance while decreasing shrub species abundance. Furthermore, we observed a significant interactive effect of the two disturbances on the relative abundance of around 40% of the species assemblage. We demonstrate that the spatial overlap of seismic lines and forest harvesting can facilitate the restoration of forest structure, but also produces a distinct signature on species composition through composite effects. While forest harvesting appeared effective in "erasing" seismic lines without further active restoration efforts, emerging composite effects can significantly influence forest composition, with potential long-term implications for regeneration that require further investigation.