Aquatic biologist Peter Tobiessen (shown at left) had found spiny water flea in his morning sample of Sacandaga Lake’s water, and by noon on October 10, 2014 he had several specimens under his microscope for us all to see. The occasion was the 4th annual meeting of Adirondack Wild: Friends of the Forest Preserve at Camp Fowler in Lake Pleasant.
This small aquatic “invader” from Europe has concerned lake ecologists since it first showed up among the zooplankton in southern Adirondack lakes around 2010. Spiny water flea, about ½ inch long, is related to native water flea, Daphnia, but it has a very long spine at the end of its body, reproduces rapidly and can dominate the large filter-feeder level of the lake’s food web at the expense of native species. Its long spine also gets tangled in fishing lines and can clog fishing rod guides. » Continue Reading.