Alvars have been identified as an ecosystem essential to the conservation of biodiversity in the Ottawa Valley natural area. The Aylmer area holds the record of having first discovered alvar landscapes in Quebec in 1992. With a sprawling alvar complex of 43 hectares (106 ac.), distributed across 6 sectors, the site supports rare and diverse species such as the eastern whip-poor-will, milksnake and the endangered monarch butterfly. However, the presence of residential developments and illicit uses make it vulnerable to habitat fragmentation, threatening the stability of this globally rare natural environment.
Decodon, pontederia and buttonbush (Photo by Caroline Tanguay/NCC)