Blue-green algae are a natural part of the ecosystem. Algae can “bloom” or grow rapidly under ideal conditions, which include warm water temperature, calm conditions, and certain nutrients in the water. An algal bloom becomes harmful when it produces toxins.
Over 20 Utah waterbodies remain under warning advisory for harmful algal blooms
More harmful algal blooms expected from intense aquaculture and human activities: UN report
Harmful Algal Blooms and Our Water. • Groundswell Center
The Recurring Plague of Lake Erie's Persistent Harmful Algae Blooms - Environmental Defence
Harmful Algal Blooms - Florida Sea Grant
Study Shows Novel Way to Manage Harmful Algal Blooms and Toxins in Ponds
The pollution causing harmful algal blooms
A Growing Epidemic of Toxic Algal Blooms
Toxic Algal Blooms Are Worsening with Climate Change - Eos