Invasive Species Control in the North American Great Lakes

Invasive Species Control in the North American Great Lakes

Source: greatlakesnow

12/17/2024

Credit: Johns Hopkins University Press

Biological invasions sometimes are seen as an inevitable result of modern life, but like other human impacts on inland waters, we can control them if we choose to do so. The North American Great Lakes have been heavily invaded by nonnative species: almost 200 nonnative species have been established in the Great Lakes basin, chiefly since the mid-twentieth century. Although most of these species have had small impacts, a few dozen problematic species have had strong ecological and economic effects.

No control has been attempted for most of the established invaders, which are not thought to have troublesome impacts. Other invaders that have had serious harmful effects (common carp and the problematic wetland plant phragmites, for example) have not yet been brought under control, despite repeated efforts. Nevertheless, experience from the Great Lakes shows that biological invasions can be managed or prevented.

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