Water

Study reveals the Great Lakes’ top 10 most harmful invasive species

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By Shealyn Paulis

Researchers have revealed the Great Lakes’ 10 worst aquatic invasive species, spotlighting the plants and animals that pose the greatest threat to the region’s delicate ecosystems, fisheries and recreational waters. The recent study, published in the Journal of Great Lakes Research, is the first to compare all 188 nonnative species in the lakes with the same methods and pinpoint which are causing the most harm to the region, its authors said. At the top of the list is the zebra mussel. These small but mighty mollusks are believed to have made their way into the Great Lakes in the 1980’s through ballast water in ships from Europe. They can now be found in all five Great Lakes.

Water

Great Lakes recreational fishing is worth more than anglers spend, study finds

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By Clara Lincolnhol

After a day out on the water, the total amount of money spent on fishing gear, transportation and food doesn’t truly reflect the worth of a fishing trip to Great Lakes anglers. Some people are willing to pay $100 more for a fishing trip than what it costs, according to a recent Appalachian State University study funded by the Great Lakes Fishery Commission. “This study raises awareness of the importance of managing the Great Lakes fishery,” said Rob Southwick, co-author of the study and president of Southwick Associates, an economics and market research company that specializes in outdoor recreation. The study is the first of its kind to find the surplus value — the measure of what a person is willing to pay for a good or service beyond its market cost — of recreational fishing trips in the Great Lakes region, Southwick said. The researchers asked more than 8,000 licensed anglers questions about their spending on fishing.

Water

NOAA taps invasive mussels to track Great Lakes pollution

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By Daniel Schoenherr

Zebra and quagga mussels have threatened Great Lakes ecosystems since they arrived in the 1980s. Now the invasive species are acting as unlikely allies in identifying pollution hotspots. The National Oceanic and Atmospheric Administration’s Mussel Watch program is collecting the mollusks at sites across the Great Lakes to measure the concentration of harmful pollutants in their tissue. A report with the results, expected this fall, will serve as an indicator to communities that they may be in need of cleanup, said one of the program’s leaders. Mussel Watch started along the Atlantic coast in 1986 and is the “longest running continuous contaminant-monitoring program of its kind in the United States,” according to NOAA.

Nearshore

Michigan pushes to plug orphan oil wells

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By Donté Smith

Capital News Service

Michigan’s oil industry may not be front and center, but it remains active with over 9,300 wells across the state. The U.S. Energy Information Administration ranks Michigan 18th in the nation in crude oil production. In June 2024, Michigan wells produced 211,000 barrels of crude oil — around 8.8 million gallons, the agency said. Otsego County leads the state in production, followed closely by Jackson, Kalkaska and Manistee counties. However, there’s a growing environmental concern linked to the industry: Michigan has about 230 orphan wells abandoned by their original operators or owners without being properly plugged.

Water

Wisconsin officials ask the public to report algal blooms in Lake Superior

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By Anna Barnes

The Wisconsin Department of Natural Resources is banking on public oversight of the largest Great Lake to help gauge the threat of increasingly common algal blooms.

Blue-green algae, also known as cyanobacteria, can produce toxins that pose a danger to public health, said Kait Reinl, research coordinator at the National Oceanic and Atmospheric Administration’s Lake Superior National Estuarine Reserve in Superior, Wisconsin. Symptoms from exposure include stomach cramps, diarrhea, vomiting, headache, muscle weakness, fever and difficulty breathing, according to the Wisconsin DNR. Pets and children are particularly at risk. “The reason we specifically call out children and pets is because they’re pretty indiscriminate about the water that they’re inhaling or swallowing, and that’s really where the biggest risk lies,” Reinl said. As of Sept.

Land

Illegal dumping nets probation sentence in Ohio fish kill

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By Eric Freedman

 

A federal judge has sentenced an Ohio business owner to one year on probation and a $5,000 fine for illegally dumping a hazardous ammonia-containing substance into the Scioto River near Kenton. The crime killed more than 40,000 fish. U.S. Magistrate Judge Darrell Clay also ordered Mark Shepherd, 72, to perform 150 hours of community service and pay $22,509 to the Ohio Division of Wildlife for violating the Clean Water Act. Shepherd, who co-owns a chemical and fertilizer transportation business, had pleaded guilty to the misdemeanor charge after an investigation by the Environmental Protection Agency and state agencies. Here’s what happened, according to court documents: In April 2021, Shepherd commingled water from a tanker trailer used to transport anhydrous ammonia – a nitrogen fertilizer — with 7,000 gallons of clean water, then disposed of it into a catch basin.

Paddle boarders cross Platte Lake, Michigan, where a decades-long campaign reduced algal blooms caused by runoff from a fish hatchery. Image: J. Carl Ganter/ Circle of Blue
Nearshore

Great Lakes beach closings are no protection from harmful pollutants

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By Amalia Medina

A green flag flying on a Great Lakes beach does not necessarily mean it’s safe to swim. Checking beach monitoring websites like BeachGuard is not a surefire solution either. These two findings are central to a public health research project, the Great Lakes Microbial Water Quality Assessment, that set out to measure microbial and chemical threats in Great Lakes waters, and how to reduce the number of illnesses they cause each year. A report from the project, sponsored by the International Joint Commission said decades-old testing methods are inadequate and “advances in newer methods are critically needed.” The commission is bi-national agency that advises the U.S. and Canada on managing water along the border. The need for such research is considered urgent.

Mussels native to Michigan’s fresh water. Image: Daelyn Woolnough
Water

Harnessing mussels to filter fresh water: A biological cure for contaminants is being studied

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By Amalia Medina

Water tanks line a room in Philadelphia’s Water Works on the bank of the Schuylkill River. Inside are small fish that are hosts to tiny organisms that researchers say can help solve polluted waterways. Tucked under the fish gills are microscopic mussels that will mature and become capable of filtering 10 to 15 gallons of water per day. Those data points make Lance Butler, who leads the research, hopeful. In essence, mussels are “our canaries in the coal mine for our water,” he said.

Water

From pet to ‘monster.’ The battle to rid Michigan’s Glen Lake of giant koi

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By Gabrielle Nelson

Robert Karner and the Glen Lake Association are on a mission to preserve the crystal-clear waters of Glen Lake next to Sleeping Bear Dunes and protect its ecosystem from invasive species. That includes Eurasian watermilfoil and one that’s gaining attention, Japanese koi. In May, bowfishers partnered with the association, a preservation and protection organization for the 46 square miles of the Glen Lake/Crystal River watershed, caught and removed four invasive koi from Little Glen Lake on the Leelanau Peninsula. “Not all invasive species are actionable,” or able to be removed, once they are introduced to a lake or river, said Karner, a biologist at the Glen Lake Association. “But a big fish like Japanese koi, at least that’s something we think is manageable.”

The removal is part of a three-year effort to remove invasive koi from the lake to protect native plants and animals.

: A Blanding's turtle stands at the edge of a wetland. Image: U.S. Fish & Wildlife Service
Water

Michigan and Ohio receive $500,000 to study rare turtles

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By Ruth Thornton

State wildlife agencies in Michigan and Ohio have received nearly $500,000 in federal funding to study rare turtles. The grant is part of more than $7 million distributed by the U.S. Fish and Wildlife Service to benefit rare and declining fish and wildlife and their habitats across the country. Other states receiving funding under the program this year include Minnesota, Iowa, Hawaii and North and South Carolina. Michigan’s work will focus on Blanding’s and spotted turtles, two rare species that often occur in wetlands. The funding will allow researchers to understand how the populations of both species are doing, especially the survival of nests and baby turtles.