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Grayling are poised for a comeback in Michigan

Posted on September 20, 2020 by admin

For Ed Eisch, the ongoing effort to reintroduce the grayling to northern Michigan streams is nothing less than an opportunity to right what he considers a historical wrong.
After all, the fish’s demise in Michigan more than a century ago was caused by both unchecked logging that destroyed spawning grounds and unregulated fishing that further decimated grayling populations.
“I think for us to be able to bring them back would be sort of a testament to all of the good work that’s been done to restore aquatic habitats in Michigan and a testament to the high-quality streams in our state,” said Eisch, who is the fish production program manager for the Michigan Department of Natural Resources and is based out of the DNR’s Traverse City Customer Service Center.
Armed with modern-day scientific techniques and knowledge, Eisch and other biologists are heading what figures to be a years-long effort to return the native species to Michigan waters.
Not since the late 1800s has the iridescent fish with the distinctive sail-shaped dorsal fin roamed the Lower Peninsula’s coldwater streams, where it was the dominant salmonid and also served as the namesake for the Crawford County seat in northern Michigan.
“We’re trying to restore something in the state that’s been lost for nearly 150 years,” said Troy Zorn, a Marquette-based fisheries research biologist specialist for the DNR. “I think as much as anything, it’s a piece of our state’s history and natural heritage. I think the idea of bringing some of that back here is kind of a homecoming, an opportunity to restore something that’s been lost.”
Building on past successes
The grayling initiative is also in keeping with broader efforts to manage the state’s outdoor resources for the enjoyment of current and future generations, said Nick Buggia, chair of the Michigan Wildlife Council. State legislators created the council in 2013 to boost public knowledge of the importance of wildlife management and conservation, as well as the positive impact that hunting and fishing have on Michigan’s wildlife and natural resources.
“We have to actively manage wildlife populations and habitats if we want to ensure their long-term survival,” Buggia said. “It’s the basic idea of ecology, which is that everything affects everything else.”
Reintroduction of the grayling would also represent another in a long line of Michigan wildlife conservation success stories, he said. For example, elk, moose and wild turkey, all of which were native to the state, became extinct in Michigan and then were brought back through concerted management programs.
As with the grayling, long-ago logging practices and other human-made activities and environmental changes decimated those species’ native populations, Buggia noted.
“Grayling were kind of in trouble for a while, but what really got them was the rapid deforestation of the northern Lower Peninsula,” he said. “The loggers thought they had an inexhaustible supply of timber. They took all that timber off and totally changed the stream habitat. Between that and the overfishing, it just spelled the death knell for grayling. But we know better than that now.”
Indeed, not only were practices such as unfettered logging and fishing abandoned years ago, but the people working on grayling restoration in Michigan are also relying on more recent scientific breakthroughs.
For instance, they will apply lessons learned by their counterparts in Montana, who have helped replenish grayling populations in that state. Because of geology’s variations, Michigan and Montana are the only places where grayling were native in the contiguous United States.
“It makes me much more optimistic than I would have been without knowing what Montana has learned,” Eisch said.
But there’s still no guarantee that Michigan will achieve its goal of reestablishing a self-sustaining grayling population, Zorn said, noting the failures of similar attempts over the years.
“The whole thing is an experiment,” he said. “The reintroduction process and conditions in the streams have to be just right to achieve success.”
Building a brood stock
So far, funding …

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