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Deer Lake Association
A member of the Minnesota Lakes Association

Curly Leaf Pondweed: Aquatic Invasive Species

In late June, 2011, a citizen reported what could be a second aquatic invasive species (AIS) on Deer Lake (in addition to the purple loosestrife we have battled for years).  The DLA arranged for a diver, Jon Arsenault (who lives just around the bay from the access) to scour the lake bottom by the access where Curly Leaf Pondweed had been discovered. On hand was Mary Blickenderfer, shoreland educator for Extension and expert botanist, who schooled diver Jon what to look for.  A very fast learner, Jon pulled up by the roots a bucket's worth of the invasive pondweed, leaving the native variety in the water where it serves a necessary role in water ecology.  He worked for several hours and was extremely thorough.  We were very lucky to catch this invasive early, before it grew into a large and difficult mat, and (hopefully) before it spread (by boat prop) to other areas of the lake.  We have returned to the access each year since to monitor the access area and have found no more Culry Leaf Pondweed (a rare success in Minnesota).  Nevertheless:  KEEP YOUR EYES ON THE WATER!!
Below are some pictures of the dive operation: