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Table 6 Sample sizes (number of data sets) for the three different outcome metrics by life stage and interventions

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

  Abundance Survival Length
Total Egg Age 0 Adult Total Egg Age 0 Adult Total Egg Age 0 Adult
Alone
 Rock material 6 5 (1) 0 (1) 4 3 1 0 2 2 0 0
 Plant material 4 2 2 0 0 0 0 0 3 1 2 0
 Waterbody creation 14 2 12 0 0 0 0 0 0 0 0 0
Combinations
 Rock material + human-made structures 0 0 0 0 1 1 0 0 0 0 0 0
 Rock material + plant material 4 0 4 0 0 0 0 0 3 0 3 0
 Rock material + plant material + human-made structures 1 0 1 0 0 0 0 0 0 0 0 0
 Rock material + plant material + waterbody modifications 2 0 2 0 0 0 0 0 0 0 0 0
 Plant material + human-made structures 1 1 0 0 1 1 0 0 0 0 0 0
 Plant material + waterbody modifications 7 0 7 0 0 0 0 0 0 0 0 0
Total 39     6     8    
  1. Numbers in brackets indicate a data set that included > 1 life stage