Skip to main content


TableĀ 3 Intervention types assessed in this review along with definitions and codes

From: The effectiveness of spawning habitat creation or enhancement for substrate-spawning temperate fish: a systematic review

Intervention type Code Definition Intervention category Definition
Sediment SED Sediment addition Rock material Aggregate/rock (additions/alterations)
Gravel GRAV Gravel Addition
Cobble ROCK Addition of cobble, boulders, small rocks, artificial reefs made of rocks
Sediment trap TRAP Removal of sediment using a sediment trap
Gravel washing WASH Gravel washing using pressure washers, or mixing substrate and allowing fine sediment to wash downstream, includes substratum raking, flooding to clean sediment
Excavate EXCAV Excavation Waterbody modification Waterbody modifications (physical alterations)
Riparian RIP Riparian modifications, grading of banks
Nutrient NUTR Addition of a nutrient
Bay BAY Creation of bays Waterbody creation Creation of a new waterbody or extension of an existing waterbody
Stream STREAM Artificial stream, creek, spawning channels
Structure STRUC Human-made structure (e.g., mesh tubes, PVC, masonry blocks, ceramic tiles) Human-made structures Human-made structures (additions)
Log LOG Addition of logs, large woody debris Plant material Plant material
Brush BRUSH Addition of brush bundles/straw bails
Vegetation VEG Planting of vegetation including macrophytes
  1. Intervention types were assigned based on intervention details provided by authors. Intervention categories were assigned to combinations of one or more similar intervention types (i.e., Intervention type) and used in the Narrative and Quantitative Syntheses (i.e., to increase sample sizes of intervention type categories for meta-analyses). Intervention codes were used in forest plots for meta-analyses (i.e., visualize aids that plot mean effect sizes and 95% confidence intervals from individual comparisons)