Tag Archive: invasive species

Jul 27

A “ruffe” road ahead for the Great Lakes

An aggressive little fish is threatening to disturb ecosystems throughout the Great Lakes. The Eurasian Ruffe is recognizable by its long spiny dorsal fin and frowning mouth. It’s native to Northern Europe and Asia, and made its first appearance in Lake Superior in the 1980s, probably after catching a ride on a freighter from Europe. …

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Permanent link to this article: http://www.currentcast.org/creature-features/a-ruffe-road-ahead-for-the-great-lakes/

Jul 24

Some big fish to fry in midwestern rivers

Bighead and silver carp can grow up to four feet long and gobble up food that native fish rely on. These invasive fish are in the Mississippi, Missouri, and Illinois rivers. And if they get into the Great Lakes, they could do enormous damage. John Dettmers, of the Great Lakes Fishery Commission, says one strategy …

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Permanent link to this article: http://www.currentcast.org/sustainable-fisheries/5040/

Jul 06

Mapping Endangered Fish in Illinois

Counting endangered fish is the first step towards protecting and improving their habitats. Dive in: One fish, two fish, red fish, blue fish…research biologist Phillip Willink, PhD, of the Shedd Aquarium is counting endangered and threatened fish. From there to here, from here to there, he’s also mapping their distribution throughout Chicagoland waters. He’s doing …

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Permanent link to this article: http://www.currentcast.org/sustainable-fisheries/endangered-fish-count/

Jun 21

European Frogbit

A bit about European Frogbit: European Frogbit  may look beautiful – like tiny, white water lilies floating on the edges of ponds and slow-moving rivers. But this plant is a ruthless invader. Frogbit was brought to Canada in 1932 as an ornamental pond plant. But it’s now spread to places such as the bays and …

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Permanent link to this article: http://www.currentcast.org/invasive-species/european-frogbit/

May 29

Too Little Phosphorus

The lowdown on phosphorus levels… Listen up: Mussels are great water filters, but too many can do more harm than good. Excess phosphorus is a problem in many parts of the Great Lakes. But in Saginaw bay, invasive mussels are removing so much that there’s not enough making its way to the deep waters of …

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Permanent link to this article: http://www.currentcast.org/biodiversity/too-little-phosphorus/

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