Scientists from the U.S. Geological Survey found neonicotinoid insecticides in 74 percent of the water samples they analyzed from 10 major tributaries of the Great Lakes. The insecticides were "detected in every month sampled and five of the six target neonicotinoids were detected." Environmental Health News says the study "suggests the Great Lakes' fish, birds and entire ecosystems might be at risk" from the insecticides that are believed to be a factor in high mortality rates of honeybees.
The algal bloom in Lake Erie this summer, fed in part by agricultural runoff, was roughly the same size as in 2013, the third-most severe bloom in 15 years of federal records, said the Associated Press.
After a commercial fisherman pulled a live Asian carp out of a northern Illinois river that empties into Lake Michigan, authorities have expressed concern that more of the invasive species have made it past electric barriers meant to keep them out of the Great Lakes, says the LA Times.
The International Joint Commission, the U.S.-Canada group that oversees the Great Lakes, will spend the next few months studying the impact of algae blooms in Lake Erie before issuing a new report on the lake in the spring, says the Associated Press.
During the summer, green slime, also known as blue-green algae, disrupted the water supply for Toledo. Nutrient runoff from farms, especially phosphorus fertilizer, gets part of the blame for feeding the algae blooms.