Is Niagara Falls a barrier against fish movement?

New research shows that fishes on either side of Niagara Falls—one of the most powerful waterfalls in the world—are unlikely to breed with one another. Knowing how well the falls serves as a barrier to fish movement is ...

Intensive fishing finds no more Asian carp beyond barrier

Two weeks of intensive fishing in and around a Chicago waterway failed to produce any proof that more Asian carp have made it past electronic barriers intended to keep the invasive species out of Lake Michigan.

Science vs. the sea lamprey

Of all the fishy predators in the Great Lakes, few are more destructive than the sea lamprey. There's something of a horror movie in their approach: jawless, they attach to prey such as salmon, whitefish or trout with a sucker ...

Image: Landslide and Barrier Lake near Oso, Washington

On March 22, 2014, a rainfall-triggered landslide near Oso, Washington, sent muddy debris spilling across the North Fork of the Stillaguamish River. The debris swamped numerous homes, resulting in the deaths of at least 24 ...

Fence goes up to keep Asian carp out of Chicago canal

The latest weapon in the fight against Asian carp doesn't look much like a weapon at all: It's a 13-mile concrete and steel mesh fence that splits the narrow divide between the Des Plaines River and the Chicago Sanitary and ...

6-week search finds no Asian carp near Chicago

(AP) -- An initial six-week mission to catch and kill Asian carp lurking on the Great Lakes' doorstep turned up none of the despised fish, suggesting few if any have eluded an electric barrier designed to block their path ...

Asian carp raises fear and loathing on Great Lakes

(AP) -- After nearly four decades as a fishing guide on the Great Lakes, Pat Chrysler has seen enough damage from invasive species to fear what giant, ravenous Asian carp could do to the nation's largest bodies of freshwater.

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