The thermal exposure risk of white sturgeon embryo, yolk-sac larvae, feeding larvae and juvenile life stages for the period when the life stages are present in the Nechako River under SSP2–4.5 and SSP5–8.5. For embryo, yolk-sac larvae and feeding larvae (larvae18 and larvae20) life stages by the A) mid-century (2050, average between 2050 and 2059) B) end of the century (2099s, average between 2090 and 2099) relative to the 1980s (average between 1980 and 1989). For juvenile life stage by the C) mid-century (2050, average between 2050 and 2059) D) end of the century (2099s, average between 2090 and 2099) relative to the 1980s (average between 1980 and 1989) for May–October. Error bars represent SD.