Lake Erie can look deceptively uniform from the surface. Beneath it, however, temperature, oxygen and nutrients divide the water into shifting layers, creating habitats that can change over surprisingly short distances.

Lake Erie can look deceptively uniform from the surface. Beneath it, however, temperature, oxygen and nutrients divide the water into shifting layers, creating habitats that can…

Lake Eries seasonal hypoxia is changing where fish gather. For years, scientists watched oxygen levels fall and fish move around the lake. Then came a surprising pattern. Fish…