Archive for September 2009
By Jeff Gillies, jeffgillies@gmail.com
Great Lakes Echo
Sept. 4, 2009
Editors note: This is the final story in a three-part series about the challenges of managing non-native fish in the Great Lakes.
Managing invasive alewives in the Great Lakes is like walking a tightrope.
Too many stymie native lake trout reproduction. Too few cripple the profitable salmon fishery.
And some biologists say it is an impossible task.
“You can’t manage on that fine of a line,” said Mark Ebener, fish assessment biologist with the Chippewa Ottawa Resource Authority. “It’s an impossible tightrope to walk.”
But the state agencies …
By Jeff Gillies, jeffgillies@gmail.com
Great Lakes Echo
Sept. 3, 2009
Editors note: This is the second of three stories in a series about the challenges of managing non-native fish in the Great Lakes.
Pacific salmon, the big money species in the multi-billion dollar Great Lakes fishery, need a feast of alewives to thrive.
But alewives are an invasive species that harm lake trout, a native fish that biologists have been trying and failing to re-establish for decades.
Alewives keep lake trout down in two ways, said Mark Ebener, fish assessment biologist with the Chippewa Ottawa …
(MI) Michigan Tech News – The Great Lakes are many things: bodies of water, sources of life, a story and a poem. “Waterlife,” a film that follows the flow of the water in the Great Lakes from the Nipigon River to the Atlantic Ocean, captures the significance of the Great Lakes and the Great Lakes ecosystem in a compelling, feature-length documentary.
By Jeff Gillies, jeffgillies@gmail.com
Great Lakes Echo
Sept. 2, 2009
Editor’s note: This is the first in a series of stories about the challenges of managing non-native fish in the Great Lakes.
Fishery managers have made little progress in restoring lake trout, the Great Lakes’ dominant predator until the species collapsed in the 1940s and 1950s.
Most of them agree that alewives, a non-native fish, are a big part of the problem. They invaded the lakes from the Atlantic Ocean after the Welland Canal opened in 1932. Alewives eat young lake trout and disrupt chemical …



