Around 9:30 a.m. on March 25, officers from the Ontario Provincial Police’s (OPP) Bancroft detachment received a report that a 28-year-old man from the Hastings Highlands area had not returned home after going ice fishing on Bark Lake, Ont., the night before.
After arriving at the lake, the OPP called in assistance from its Underwater Search and Recovery Unit. Divers searched the lake, locating the man’s body on Sunday morning just after 11 a.m. He was pronounced dead on the scene. The OPP’s investigation into the incident is ongoing and a post-mortem examination has yet to be conducted.
The local community has set up a GoFundMe page to provide financial support to the deceased’s family, which includes his wife, his one-and-a-half-year-old son, and a second baby expected in October.
Bark Lake is approximately 15 kilometres east of Barry’s Bay and is a popular ice fishing spot in the winter. The lake, which stretches 14 kilometres in length and six kilometres in width, is known for its lake trout.
While stable throughout colder months, Bark Lake operates on a dam system and is fed by the Madawaska River, which can cause more rapid changes in water depth and ice thickness. This, combined with March’s warm weather, can cause the ice to be less predictable.
“Be familiar with the lake you’re on,” says Joel Devenish, a Constable with the OPP’s Bancroft detachment.
Before heading out on a frozen lake, you should be aware of its changing conditions. Measure the ice in several locations to ensure it’s thick enough to be on. The Red Cross says that ice should be 15 centimetres thick for walking and 25 centimetres thick for snowmobiling.
Looking for a few more ice safety tips? Always travel with a companion. That way, if you fall through the ice, they may be able to rescue you or at least call for help. Wear a lifejacket or some type of buoyant suit. If you go through the ice, this will increase your chances of surviving. Finally, stay off ice where there are fast-moving currents or narrows. The fast-moving water can cause the ice in those areas to be much thinner.
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Every winter when Lake Suwa in Japan freezes, locals believe that the Shinto male god Takeminakata crosses the frozen lake with his dragon to visit the female god Yasakatome. He leaves only his footsteps on the ice in the form of a sinusoidal ice ridge called the omiwatari.
In 1397, Shinto priests began celebrating and recording the appearance of the omiwatari. They used the direction of the cracks left by the omiwatari to forecast the agricultural harvest for the upcoming summer. In the first 250 years of the ice record, Lake Suwa froze every year, except for three years during which time the region saw widespread famine. Since the turn of the millennium, however, the lake has only frozen seven times.
If the ice cover in northern lakes continues to decline at the same pace, it will have severe ecological and cultural consequences.
Lakes in the Northern Hemisphere are losing their ice cover faster than ever. (Midge Eliassen), Author provided
Lakes losing ice at rapid rates
Ice duration was more than two weeks shorter per century, on average, since the Industrial Revolution, with lakes losing up to 34 per cent of their total ice cover. In the past 25 years, the loss of ice escalated with lakes losing ice six times faster than any other period in the past 100 years.
Around 15,000 lakes, including Lake Suwa and the North American Great Lakes — Lake Michigan and Lake Superior — are beginning to remain ice-free in some winters. Lakes situated at lower latitudes and in some coastal regions, where winter air temperatures hover around 0 C (the freshwater freezing point) in addition to large, deep lakes in colder regions, are most sensitive to experiencing ice-free winters.
Large, deep lakes, such as the North American Great Lakes, require sustained cold temperatures to sufficiently cool their waters to allow ice to form, as deeper lakes take longer to cool in autumn due to their immense thermal mass.
Larger lakes with a longer fetch — the area over which the wind blows — also tend to freeze later because they are more sensitive to increased wind action breaking up the initial skim of ice on the lake surface.
Why does ice loss matter?
Lake Superior is one of the fastest warming lakes in the world. Since 1867, it has lost over two months of ice cover. By removing the “lid” of ice, evaporation rates can increase in Lake Superior, as well many other lakes across the Northern Hemisphere, further affecting water availability. As lakes transition to becoming ice-free and the physical barrier between the lake surface and the atmosphere is removed, the potential for evaporation to occur year-round increases.
Less ice cover, warmer temperatures, and increased storm events deliver more nutrients to the lakes, leading to widespread summer blue-green algal blooms, also known as cyanobacterial blooms, which were once thought to be implausible in the cold, deep and pristine waters of Lake Superior.
In some lakes, algal blooms are becoming particularly thick, decreasing the amount of sunlight that reaches deeper waters. With less sunlight, photosynthesis is reduced, ultimately leading to a decrease in the concentration of dissolved oxygen available to support aquatic life.
Some fish communities rely on long winters. For example, following short winters, Lake Erie yellow perch produced smaller eggs and weaker young fish that were less likely to survive to adulthood. Fish life stages most sensitive to temperature changes in the earlier part of the open-water season include embryos and spawning adults. Furthermore, an earlier start to summer (i.e., due to earlier ice loss) can cause mismatches in the timing of critical activities, such as spawning and foraging, often with widespread ramifications across the food web.
Reducing greenhouse gases and slowing down climate change is the only way to save lake ice cover, and protect the local ecology and culture that depends on it. (Johanna Korhonen), Author provided
Our research has shown that the global decline of lake ice cover in recent decades can only be explained by increased greenhouse gas emissions since the Industrial Revolution. There is no magic solution beyond limiting greenhouse gas emissions to slow climate change and ultimately preserve lake ice cover.
For northern communities, ice cover provides a way of life in the winter. Countless Canadian kids have learned how to skate and play hockey at nearby lakes, local ponds, and backyard ice rinks, just as hockey legend, Wayne Gretzky, did in Brantford, Ont. Warmer winters are contributing to shorter outdoor ice hockey and skating seasons.
Ice fishing tournaments are increasingly cancelled, with widespread consequences for local economies. For example, the winter ice fishing season in Lake Winnipeg alone generates over $200 million each year.
The ice ridges on Lake Suwa form an integral part of the community’s spiritual traditions and culture. (Satoe Kasahara), Author provided
Finally, for the Shintos living in Suwa, protecting ice cover is essential to preserving the spiritual traditions maintained by generations of Shinto priests. At current rates of greenhouse gas emissions, climate projections predict that the lake will rarely freeze in the very near future, and following 2040 will never freeze again.
However, slowing climate change and limiting temperature increases below 1.5 C will allow Takeminakata to periodically cross the frozen lake to visit Yasakatome as he has done for centuries.
