Climate & Environment
Retired Teacher Spends Three Decades Reviving Minnesota Wetlands to Create Wildlife Havens
Mike Niziolek, a former AP biology teacher, has dedicated the past thirty years to restoring his 150-acre property in Elk River, Sherburne County, Minnesota, to its natural condition from centuries ago, before human development altered the landscape. His efforts focus on reviving wetlands, converting pastured land into oak savanna, tilled fields into prairie, and drainage ditches back into wetlands.
Niziolek's work addresses a significant environmental issue: Minnesota has lost approximately 50% of its original wetlands, with losses exceeding 90% in the southern part of the state. "In this case, we're trying to restore them, which is a much more difficult task than saving the ones that we already have," Niziolek said. "But we're going to try, because it's definitely worth the effort."
His conservation efforts have been recognized by the Minnesota Land Trust, which named him Landowner of the Year in 2018. The organization describes his approach as "slowly and methodically transforming pastured land to oak savanna, tilled land to prairie, and ditches to wetlands." In 2024, Niziolek completed another wetland restoration project on his property.
His work has been supported financially and technically by the U.S. Fish and Wildlife Service's Partners for Fish and Wildlife Program. John Riens, a biologist with the agency, explained that restoration involves analyzing historical site data, including old imagery, to understand what the land originally looked like. Based on this research, experts design tailored restoration plans and hire local contractors to reshape the land and establish native plant species while controlling invasive species such as buckthorn.
"We help the landowner try to manage the site in perpetuity so that they can be successful," Riens said. Over the past five years, the Fish and Wildlife Service and the Nature Conservancy have completed 72 wetland restoration projects together.
Niziolek describes the results of his efforts as remarkable. A wetland he restored in the early 1990s now hosts an estimated 15 to 20 types of unique plants and countless invertebrate species. "There are so many critters that use these spaces, either directly or indirectly. It's amazing," he said, referring to these restored areas as "bio supermarkets" due to their rich biodiversity.
These wetlands attract migrating sandhill cranes and monarch butterflies and provide habitat for threatened species like Blanding's turtles, now found on his property. Beyond supporting wildlife, wetlands help manage excess water from heavy rains and snowmelt by storing floodwaters and releasing them gradually. They also filter nutrients and sediment from runoff, improving water quality, and help replenish underground aquifers. Wetlands with peat bogs are particularly effective at sequestering carbon dioxide, functioning as carbon sinks that help mitigate climate change. "That's a carbon storage system that we can utilise to mitigate the human cost of climate change," Niziolek said.
Despite their ecological importance, wetlands across the United States face significant threats. A 2024 report by the U.S. Fish and Wildlife Service found that wetland loss is accelerating, with approximately 670,000 acres lost between 2009 and 2019 — an area comparable to the size of Rhode Island. Martha Williams, Director of the U.S. Fish and Wildlife Service, stated, "Wetland loss leads to the reduced health, safety and prosperity of all Americans."
Wetlands now cover only 6% of the nation, half the area they occupied in the 1780s. Minnesota, however, stands out as one state that has achieved a net gain in wetlands in recent years due to conservation efforts like Niziolek's.
"I still have lots more to do, but I'm happy that this land is protected forever for future generations," Niziolek told the Minnesota Land Trust.