Vascular plant diversity on rock outcrops

Over time, the landscape of the Rouyn-Noranda region has undergone environmental degradation characterized by soil acidification, heavy metal contamination and vegetation loss. Research conducted around other smelters indicates that the release of sulfur dioxide into the atmosphere and the subsequent acidification of soils lead to soil degradation and loss of biodiversity in surrounding ecosystems. Despite the likelihood that these impacts also exist around the Horne smelter in Rouyn-Noranda, there is little research on how emissions affect vegetation diversity and carbon dynamics. This study will focus on rock outcrops and assess vegetation by determining plant species abundance, community richness and composition, and carbon content. Sampling was carried out along gradients and in different directions from the smelter. We anticipate a reduction in species diversity and biomass in the vicinity of the smelter. Species composition could change, favoring more pollution-tolerant species near the foundry, while more sensitive species should be found at greater distances. The results of this study will provide guidance for future restoration projects and improve our understanding of environmental resilience.