Ashes spewed by Bulusan and Mayon volcanoes have been found to be preventing the recurrence of algae that cause red tide in Sorsogon Bay, a marine scientist based in the Bicol University (BU) here said yesterday. “Blooms of microalgae after a volcanic eruption have been documented worldwide. In Sorsogon Bay, the frequent eruption of Mt. Bulusan, whose major river systems deliver volcanic materials to the Casiguran-Juban side of the bay, may be preventing the harmful algal bloom (HAB) that produces the red tide toxin,” Dioneda told The STAR.

Dematera, C. (2015, June 29). Volcanic ash prevents red tide in Sorsogon Bay. The Philippine Star, p. A-30.