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Article from a recent MPBN Report by Iselin Bratz
Swollen bladderwort, an invasive aquatic plant first discovered in Maine two years ago, has made its way into eight water bodies in southern and western parts of the state.
John McPhedron, head of the invasive aquatic species unit at the Maine Department of Environmental Protection, said the bladderwort poses a risk to local ecosystems.
“Any infestation of an aquatic invasive plant is a concern,” McPhedron said.
Native to the Atlantic Ocean, McPhedron said the bladderwort threatens native ecosystems, reduces water quality, and can impact recreational access and shoreline property. He said that while manual and chemical control methods are in place, there is not yet a long-term fix.
The plant likely arrived in Maine through human activity, and McPhedron said it spreads fast.
“It is a free-floating plant, so it can be blown around or moved around by waves or wind action throughout the water body,” McPhedron said. “So, it does add a little bit of complexity there.”
McPhedron stresses the importance of preventing the spread of the invasive plant. He said lake and pond users should “Clean, Drain, and Dry” their boats and gear whenever moving from one body of water to another.
Resources:
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For the most recent map of aquatic invasives in Maine, click HERE.
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For more about how to identify Swollen Bladderwort, see pages I-L of Lake Stewards of Maine’s Supplement to their invasive species guide HERE.
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Join the fight to stop the spread of invasive aquatic species by joining an Invasive Plant Patrol Team at the Lake Stewards of Maine. You’ll become an expert in invasive plant identification and help a state-wide effort for early detection and action. FMI, visit the IPP page HERE.
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