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Clay spray could spell death for algal blooms

作者:那维    发布时间:2019-03-07 01:06:01    

By Ian Sample TOXIC blooms of blue-green algae could be wiped out by spraying rivers and lakes with a fine layer of special clay, say researchers in Australia. Blue-green algal blooms—dense, floating mats of cyanobacteria— have increased dramatically over recent years. They form when nutrients in rivers and lakes are particularly abundant, something often blamed on discharges from sewage works and the use of fertilisers. More than half of these blooms produce toxins, which can claim the lives of humans and animals (New Scientist, 18 May 1996, p 5). But last week,

 

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