Solution to Harmful Algal Blooms

Harmful algal blooms are often caused by nutrient pollution via overused chemicals such as phosphorous. These algal blooms regularly represent threats to water-based freshwater ecosystems, and so it’s useful that a solution to this problem is being introduced more.

A cheap, safe and effective method of dealing with harmful algal blooms is on the verge of being introduced following successful field and lab tests.

Moves to adopt use of hydrogen peroxide (H2O2) as an effective treatment against toxic algae are already underway following the results of new research by a team from the John Innes Centre and the University of East Anglia (UEA.)

Successful trials last summer showed that H2O2 was effective against the golden algae, Prymnesium parvum. This is responsible for millions of fish kills worldwide each year and a threat to the £550m economy of the Broads National Park where trials are taking place.

Now follow up lab tests have demonstrated that controlled doses of the versatile chemical compound could be even more effective in dealing with cyanobacteria commonly known as blue green algae — a major public health hazard and potentially fatal to dogs and livestock.

Some of these exciting results are published today in the journal Biochemical Society Transactions along with a series of other scientific developments related to algal communities in the Broads National Park; one of the UK’s most popular and environmentally important network of waterways.

Dr Ben Wagstaff, one of the authors of the study from the John Innes Centre said: “We’ve demonstrated that the use of hydrogen peroxide is a practical, relatively easy way of managing these blooms.

“Work has already started to put together protocols for the use of hydrogen peroxide to control Prymnesium and our research showed that blue green algae are even more susceptible. You can potentially use even lower doses to wipe out blue-green blooms.”

The work in the Broads National Park could have widespread implications for the way harmful algal blooms are managed in waterways worldwide.

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