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Table 6 Distributions of kelp species at different depths in homogenous or stratified water masses

From: Regional-scale analysis of subtidal rocky shore community

Depth Homogeneous water Stratified water Mann and Whitey test results
N Mean (%) N Mean (%) p value U
−3 m C.D. 18 5.2 16 94.4 <0.0001*** 0
−8 m C.D. 14 15.7 12 69.0 0.0006*** 17.5
−13 m C.D. 7 0.8 3 8.3 0.5150 8.0
  1. Sp relative abundance, Abundance of Saccorhiza polyschides to total kelp (Laminaria hyperborea, Laminaria ochroleuca and Saccorhiza polyschides) densities; p values represent the significance of differences between Sp relative abundance in different water masses based on the Mann–Whitney U test; *** p < 0.001