The Great Lakes have been invaded by more non-native species than any
other freshwater ecosystem in the world. In spite of increasing efforts to stem
the tide of invasion threats, the lakes remain vulnerable, according to
scientists from McGill University and colleagues in Canada and the United
States. If no new regulations are enforced, they predict new waves of invasions
and identify some species that could invade the Lakes over the next 50 years.
Over the past two centuries, more than 180 non-native species have been
recorded in the Great Lakes and the rivers that flow into them. Nearly 20% of
these species are considered to be harmful ecologically and economically,
posing threats to the Lakes' native biodiversity and multibillion dollar
fishery. New threats are emerging because of risks associated with trade in
live organisms and climate change, the researchers caution in a study in the
Journal of Great Lakes Research……To Read More......
No comments:
Post a Comment