Fig. 1From: The effectiveness of spawning habitat creation or enhancement for substrate-spawning temperate fish: a systematic reviewResults of the literature search and study selection process showing the final number of studies included in the systematic review. Note, in addition to the 12 articles excluded based on a lack of comparator (see *), 16 additional articles were excluded for the same reason from other sources (i.e., websites, social media) not captured in this figure, resulting in 28 total articles excluded due to a lack of comparatorBack to article page