Winter is changing across the Great Lakes region, and scientists want to know what that will mean.
The National Oceanic and Atmospheric Administration and NASA announced Thursday that 2021 was the sixth warmest year in history.TRAVERSE CITY, Mich. -- What's happening in the Great Lakes during those long, frigid months when they're often covered partially or completely with ice? A casual observer — and even experts — might be inclined to say, “Not much.”
“We've been ignoring winter on the Great Lakes for so long,” said Ted Ozersky, a lake biologist with the University of Minnesota Duluth, who announced the “Winter Grab” expedition Thursday. They'll take what Ozersky described as a midwinter “snapshot,” measuring characteristics such as light levels at different depths, water movement and the presence of carbon, bacteria and nutrients that feed fish but also can damage the environment.
“I'm especially interested in what forms of phosphorus are present in the water during wintertime,” he said."We have ways of characterizing whether it's the type that can support the food web or contribute to harmful blooms."Great Lakes ice cover has declined steadily since the 1970s and some projections indicate it could become scarce later this century.
“Winter is the season that is altered the most with climate change,” said Marguerite Xenopoulos, an ecosystem ecologist with Trent University in Peterborough, Ontario. She will take samples from Lake Huron's Georgian Bay and Lake Ontario's Bay of Quinte during the excursion.
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