In what ways can an algal bloom affect pond life?

An algal bloom can significantly impact pond life by depleting oxygen levels in the water, leading to hypoxia and potentially causing fish kills and the decline of other aquatic organisms. The dense growth of algae can block sunlight, inhibiting the photosynthesis of submerged plants and disrupting the entire ecosystem. Additionally, some algal blooms produce toxins that can harm or kill fish, invertebrates, and even mammals that rely on the pond for drinking water. These changes can result in a loss of biodiversity and alter the natural balance of the pond ecosystem.