Meta-analysis dataset of fish recruitment enhancement in coastal nursery habitats across North America

This dataset compiles 2,002 independent effect sizes from 102 published
studies quantifying fish density in structured coastal habitats (submerged
aquatic vegetation, salt marsh, and oyster reef) relative to adjacent
unstructured bottom across North America and the Caribbean. Each row
represents one spatially and temporally independent comparison. For each
comparison, the dataset includes mean fish density or catch per unit
effort (CPUE), standard deviation, replicate sample size, sampling gear,
taxonomic identity (species and family), functional guild classification,
habitat type, restoration status, abiotic variables (temperature,
salinity, tidal regime), and habitat attributes (e.g., percent cover,
structure biomass, reef relief, and adjacent habitat type). Recruitment
enhancement (RE) is calculated as the log response ratio of mean fish
density in structured habitat relative to adjacent unstructured habitat.
Fish abundance values are retained in original study units (e.g.,
individuals per m², per haul, per tow) as documented in the unit column.
Missing values are coded as NA. The dataset enables comparative analyses
of recruitment enhancement among major North American nursery habitats and
evaluation of how restoration, habitat attributes, abiotic conditions, and
fish traits shape recruitment responses. All data were extracted from
published sources and involve no new ethical considerations. The dataset
is publicly available for reuse.