Table 2 Search terms for each PICO element and the resultant final search string

POPULATION (P)

riparia*^a OR floodplain$ OR creek$ OR stream$ OR river* OR wetland$ OR lake$

INTERVENTION (I)

restor* OR reclaim* OR regen* OR “re-establish*”, OR renew* OR reveg* OR rehabilitation OR reconstruct* OR replant* OR engineer* OR protect* OR “set-aside” OR remediat* OR revitaliz* OR “de-canalisation”, OR “re-meandering”, OR “re-wetting”, OR reforest*

OUTCOME (O)

biodivers* OR divers* OR "ecosystem service$", OR "ecological service$", OR “ecological function$", OR “ecosystem function$”,OR "species richness", OR “species abundance", OR pollination OR “pest control”, OR “ seed dispersal”, OR “carbon sequestration”, OR “carbon storage”, OR “natural capital", OR "water quality", OR "crop yield$", OR "crop production", OR connectivity OR resilien* OR flood$ OR erosion OR "bank stability", OR "flood protection", OR "flood mitigation", OR "human health", OR "food security", OR nutrition OR safety

LOCATOR

tropic* OR “global south", OR "southern hemisphere",

SEARCH STRING

riparia* OR floodplain$ OR creek$ OR stream$ OR river* OR wetland$ OR lake$ AND restor* OR reclaim* OR regen* OR “re-establish*”, OR renew* OR reveg* OR rehabilitation OR reconstruct* OR replant* OR engineer* OR protect* OR “set-aside”, OR remidiat* OR revitaliz* OR “de-canalisation”, OR “re-meandering”, OR “re-wetting”, AND biodivers* OR divers* OR "ecosystem service$", OR "ecological service$", OR “ecological function$", OR “ecosystem function$”, OR "species richness", OR “species abundance", OR pollination OR “pest control”, OR “seed dispersal”, OR “carbon sequestration”, OR “carbon storage”, OR “natural capital", OR "water quality", OR "crop yield$", OR "crop production", OR resilien* OR flood$ OR erosion OR "flood protection", OR "flood mitigation", OR "human health", OR "food security", OR nutrition OR safety AND tropic* OR "global south", OR "southern hemisphere",