Tag Archive: invasive species

Feb 15

Grass carp putting down roots

There are extensive efforts underway to keep invasive Asian carp out of the Great Lakes. But one variety has already been popping up there for over 30 years. For decades, people have used sterilized grass carp to control pond vegetation. Over time, some of those fish have escaped to the Great Lakes. Because they could …

Continue reading »

Permanent link to this article: http://www.currentcast.org/sustainable-fisheries/grass-carp-putting-down-roots/

Jan 25

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. …

Continue reading »

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

Jan 22

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 …

Continue reading »

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

Dec 13

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 …

Continue reading »

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

Nov 08

Great Lakes Villains on the Move

Cue the scary music! If Asian carp barge into Lake Erie, Ohio’s tourism and travel industries are at stake. Listen up: Imagine 40-pound fish taking over a lake, and stealing food from smaller species. It may sound like a horror flick, but the threat of Asian carp is real—and breeding populations exist in rivers near the …

Continue reading »

Permanent link to this article: http://www.currentcast.org/water-and-recreation/villains-on-the-move/

Older posts «