Several invasive species, such as the zebra mussel, are native to the Ponto-Caspian region, which includes the Black, Caspian and Azov Seas, and were imported to North America by transoceanic ships. These species are known to have disrupted ecosystems around the world, including those of the Great Lakes and St. Lawrence River. However, the impacts of these invaders on native biodiversity appear to have been less extensive in the St. Lawrence River than in the Great Lakes. This phenomenon might be explained by the river’s weaker conductivity. Read the full story by The Conversation.
COMMENTARY: St. Lawrence River zones that are hostile to invasive species can be refuges for native fish
