Table 1 Search string used to update searches from 2017 through 2019

Population terms

((Fish*) AND (“Fresh water” OR Freshwater OR Stream$ OR Water$ OR River$ OR Fluvial OR Estuar* OR Reservoir$ OR Impoundment$ OR "Hydro electric*" OR Hydroelectric* OR "Hydro dam*" OR Hydrodam* OR "Hydro power" OR Hydropower OR "Hydro" OR Dam$))

AND

Intervention/exposure terms

(Flow* OR Discharg*)

AND

Outcome terms

(Productivity OR Biomass OR Abundance$ OR Densit* OR Yield$ OR “Ecological response” OR “Ecosystem response” OR “Biotic response”)

NOT

Exclusionary terms

(Mining OR "Mine site" OR Aquaculture OR "Wastewater treatment" OR Carbon)