Sometimes the damage is caused by the deadly toxins that some algal species produce, but overgrowth of normally-benign algae can also wreak havoc. After a massive bloom, the algae die and the microbes ...

When the algae eventually dies, the oxygen in the water is consumed, making it impossible for aquatic life to survive (Getty Images) It causes an overgrowth of algae that consumes oxygen from ...

Early indications show a welcome reduction in the level of nitrogen pollution in Ireland's rivers last year, the ...

If your patio is covered in ugly stains and horrid green algae after months of disuse then don't worry - this cheap, easy ...

The overgrowth of algae can give the water a red, green or brown hue. After previously seeing levels as high as 20 million K. brevis cells per liter and fish kill and respiratory irritation ...

Patios and paths will have suffered after the long winter and it's common to see moss and green algae on these hardstanding ...