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Table 2 Definitions of terms used throughout the systematic review

From: What are the relative risks of mortality and injury for fish during downstream passage at hydroelectric dams in temperate regions? A systematic review

ArticleAn independent publication (i.e., the primary source of relevant information). Used throughout the review
SiteA specific hydroelectric facility (i.e., hydro dam) or research laboratory/testing facility (lab) where experiment(s) or observation(s) were undertaken and reported from the same or different article. Used throughout the review
StudyIf at a given site, evaluations of responses were conducted for different: (1) operational conditions (e.g., turbine discharge, wicket gate opening width, dam height); (2) modifications of a specific intervention (e.g., number of turbine runner blades); or (3) depth at fish release; we considered these separate studies and each were given a “Study ID”. If at a given site, evaluations of responses were conducted for different interventions (e.g., mortality at turbines and at spillways), we only considered these separate studies if the fish were released separately for each intervention (i.e., different release points immediately above the intervention under evaluation, within the same or different years). When studies released a group of fish at a single location above all interventions, and the outcomes came from route-specific evaluations, these were considered the same study and received the same Study ID. Used throughout the review
ProjectIndividual investigations within a study that differed with respect to ≥ 1 aspects of the study validity criteria (e.g., study design). Used in Review descriptive statistics and narrative synthesis
Data set(1) A single study from a single article; or (2) when a single study reported separate comparisons for different: (a) species, and/or (b) the same species but responses for different: (i) outcome subgroup categories (i.e., injury, immediate mortality, delayed mortality, number of fish entrained); (ii) life stages for the same outcome subgroup; and/or (iii) sources of fish for the same outcome subgroup. The number of datasets was only considered for quantitative analyses