How do dead zones affect biodiversity?

"Dead zones result from these impacts, which include algal blooms and hypoxia. Phosphorous, nitrogen, and other nutrients increase the productivity or fertility of marine ecosystems ... By depriving organisms of sunlight and oxygen, algal blooms negatively impact a variety of species that live below the water's surface."

Dead zones result from these impacts, which include algal blooms and hypoxia. Phosphorous, nitrogen, and other nutrients increase the productivity or fertility of marine ecosystems ... By depriving organisms of sunlight and oxygen, algal blooms negatively impact a variety of species that live below the water's surface.