31 July 2011


Chaoborus (phantom ghost midge) larva (10 mm in length), Rietvlei (South Africa) Photo: Bill Harding

Nebraska has issued  health alerts for three lakes. Officials said Friday that water samples taken from the Lone State Lake in Fillmore County, Rockford Lake in Gage County and Maskenthine Lake in Stanton County showed high levels of a toxin released by blue-green algae.  Oregon public health officials have issued a warning about high algae levels in Diamond Lake just north of Crater Lake National Park.

Head and mouthparts of this predator, Chaoborus. Photo: Bill Harding

In Kansas, the blue-green algae advisories for Old Herington Lake and Marion Reservoir have been lifted.

In the UK the algal bloom in Pembrokeshire continues.

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