Fish die-offs are concurrent with thermal extremes in north temperate lakes

Nature Climate Change, Published online: 08 July 2019; doi:10.1038/s41558-019-0520-y

Mass summertime fish die-offs across 359 Wisconsin lakes are attributed to high lake temperatures during periods of extreme heat, while infectious disease and winter conditions are shown to be poor predictors. Die-offs are projected to double by 2050 and quadruple by 2100 in north temperate lakes.