Beginning in late September through early October, anglers throughout the state are asked to be on the lookout for Michigan Department of Natural Resources personnel conducting walleye recruitment surveys – a tool that helps fisheries managers determine how many walleye either were produced naturally or survived stocking in 2022 (commonly referred to as a given year’s “young-of-year” fish).

Using electrofishing boats, crews will survey the shallow areas near the shoreline of lakes at night with the goal of capturing young-of-year walleye. On larger lakes, two or more electrofishing crews using separate boats may operate at the same time to cover more area.

The crews will work both on lakes that have been stocked with walleye and lakes that have not.

“Conducting surveys on both stocked and unstocked lakes can affect decisions about future walleye research and stocking efforts and give valuable insight into the status of the younger walleye in the system,” said Emily Martin, DNR Fisheries Division biologist.

Biologists also will collect and keep a sample of young-of-year walleye from stocked lakes to determine whether the primary source of reproduction is natural or stocked. Many walleye that are stocked are marked with oxytetracycline, a chemical marker that can be observed within captured fish by using a microscope with an ultraviolet light source in a laboratory setting. Read more

After decades of fish stocking decreases to balance the alewife and Chinook salmon populations, the Michigan Department of Natural Resources is seeing good indicators that a modest stocking increase may be warranted in Lake Michigan.

To discuss this proposal and receive public feedback, the DNR will host a virtual meeting Monday, Sept. 19, from 7 to 8:30 p.m.

“We have seen several years of good Chinook salmon growth and have a slight increase in the alewife biomass, or abundance of those fish,” said Jay Wesley, the DNR’s Lake Michigan basin coordinator. “Although the alewife biomass is a fraction of what it was historically, we have a good 2021-year class and have seen up to six-year classes of alewives in our fisheries surveys – that means there are up to six different age groups in the current population of alewife.”

A “year class” refers to all of the fish of any species hatched, either through natural reproduction or through fish-rearing efforts, during that year’s spawning period.

Wesley said that a recently run predator-prey model also suggests that Lake Michigan has a good ratio of Chinook to alewife biomass, which is one of many indicators used to inform stocking decisions.

“The proposed 54% increase from 650,000 to 1 million spring fingerlings is a modest increase compared to the estimated 4.5 million wild Chinook salmon in Lake Michigan,” said Wesley. “It will allow us to increase numbers at sites like Charlevoix that contribute to the entire lake fishery and reinstate stocking sites like Ludington State Park and Fairport.”

Meeting details Read more

Decision confirms the public’s right to walk or wade streambeds that cross privately owned lands

SANTA FE, N.M. – The New Mexico Supreme Court has ruled again in support of public access to public waters in a Thursday decision that confirms the public’s right to walk or wade streambeds crossing privately owned lands.

The opinion ruling by the court follows its unanimous decision in March to strike down a regulation that allowed landowners to close access to streams flowing through their properties. The New Mexico Chapter of Backcountry Hunters & Anglers, along with the New Mexico Wildlife Federation and the Adobe Whitewater Club of New Mexico, had filed suit in 2020 asking the court to nullify the regulation as unconstitutional. That decision overturned the so-called Non-Navigability Rule and also voided closures adopted previously on several New Mexico streams. Read more

Second river in Michigan’s northern Lower Peninsula to experience nuisance didymo growth

The Michigan Department of Environment, Great Lakes, and Energy has confirmed the presence of didymo (Didymosphenia geminata), a nuisance alga also known as rock snot, in a stretch of the Boardman River in Blair Township in Grand Traverse County.

Blooms of didymo, a microscopic diatom (single-celled alga), were detected on the Upper Manistee River in Kalkaska County in December 2021 and have been found in the St. Marys River in the Upper Peninsula since 2015.

Not a typical alga

Unlike the harmful algal blooms that plague areas of the Great Lakes and some inland lakes due to warm temperatures and excess nutrients, didymo blooms form in cold, low-nutrient streams generally considered pristine – the same streams prized for their sport fisheries. Read more

About the time tulip poplars, oaks, maples, and hickories are burnished the color of an ending season, brown trout and brook trout from Georgia to Maine turn their attention to a new beginning:  procreation.  The colorful flanks of these trout mirror the spectra of leaves that carpet the floor of the Appalachian Mountains. Brown trout sport a warm honey beneath black peppercorn spots all covered in a chrome sheen. Worm-like markings lay over the dark olive backs of brook trout, flanked with shades of yellow specks punctuated by drops of ox blood, each fish dotted in its own constellation.

Brook trout are native to streams that vein over Appalachia; brown trout are a European import, well established for decades. With shortening shadows and cooler temperatures, both species lay their eggs in gravelly redds where oxygen-rich water bathes through them the winter-long as they incubate.  Brown trout may have a competitive edge over the native brook trout, particularly at lower elevations where warmer water favors brown trout. Other interactions between the two species are not well understood.

To learn more about how brook trout fare over a long span of time in the presence of brown trout, biologists John Odenkirk and Mike Isel with the Virginia Department of Wildlife Resources (VDWR) examined a large amount of data—nearly 25 years’ worth of information—on brook and brown trout in the Rapidan and Conway rivers of northern Virginia. Sport Fish Restoration dollars—federal excise taxes paid by fishing tackle manufacturers—funded their work. Odenkirk and Isel published their findings in the scientific Journal of the Southeastern Association of Fish and Wildlife Agencies, March 2022 issue. Read more

Steelhead survey – share your input

We are conducting a brief survey to learn more about steelhead anglers. The survey’s purpose is to gather input from anglers to better understand your priorities and experiences, particularly in Michigan. Your answers are important to us.

The survey should only take 10 minutes to complete, and your answers will remain anonymous.

Take survey 

Join the Department of Natural Resources, Michigan State University, Tower-Kleber Limited Partnership and Sturgeon for Tomorrow Saturday, Aug. 20, for free sturgeon hatchery tours at the Black River facility northwest of Onaway. Tours will run from 10:30 a.m. to 1 p.m.

“Visitors will see three-month-old lake sturgeon currently in the hatchery and learn about early life history and how we can all play a role to keep this species healthy in our waters,” said Tim Cwalinski, Northern Lake Huron Unit supervisor with the DNR.

Researchers from the DNR and MSU will be on hand to talk about lake sturgeon biology, early life history and current research. Sturgeon for Tomorrow representatives will discuss restoration work to improve sturgeon spawning habitat, sturgeon conservation and outreach programming. Read more