Révision de l’indigénat des taxons de quatre flores couvrant le territoire du Bic et de la péninsule gaspésienne et de la flore exotique des montagnes Blanches du New Hampshire

An atlas of naturalized exotic plants (NEP) was generated based on an exhaustive inventory of trails and service areas in Gaspésie National Park in 2021 and 2022. Colonies of 107 NEP taxa were recorded on the territory, and this richness was then compared with that of other protected areas in Québec and New Hampshire. Our comparative results suggest that colonization by exotic plants is a relatively recent phenomenon in the study area. NEP colony size and species richness are highest at low elevations where the main service areas of Gaspésie National Park are located. Eight exotic plant species are already reaching the alpine tundra, a number that could increase in the near future.