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European Frogbit Detected in West Michigan Lakes
A native of Europe and parts of Africa and Asia, European frogbit is an aquatic plant with small (half-inch to 2.5 inch), heart-shaped leaves resembling miniature water lilies. Unlike similar aquatic plants, European frogbit does not anchor its roots in the lake or stream bed but remains free-floating.

The plant quickly forms dense colonies or mats in shallow, slow-moving waters. These thick mats prevent native plant growth, make movement difficult for ducks and large fish, and cause problems for boaters, anglers and swimmers.

European frogbit is spread by plant fragments or by turions - small, quarter-inch buds that break off the plant and overwinter in lake or stream beds. Plant parts easily can be transported to new water bodies on boat motors or trailers, fishing gear and other recreational equipment.


 
 


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Hormone Disruptors Broken Down by Sunlight, but Regenerate at Night - After testing the 17a-trenbolone though several cycles of light and dark, scientists were surprised to see that levels rebounded during the dark periods. This information could help explain harmful effects in aquatic wildlife when concentrations tested during the day seemed too low to be harmful.


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