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Fig. 4 | Helgoland Marine Research

Fig. 4

From: Species richness and diversity across rocky intertidal elevation gradients in Helgoland: testing predictions from an environmental stress model

Fig. 4

Trends in species diversity (mean ± SE) across a intertidal elevation (with data for the 3 shores combined; main effects), b the 3 studied shores (with data for the 3 elevations combined; main effects), and c across elevation separately for each shore (simple effects). In graphs a and b, significant differences between means are indicated by different letters (see “Results” for P values). In graph c, the upper row of letters compares means for elevations separately for each shore, while the lower row compares means for shores separately for each elevation (see “Results” for P values)

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Helgoland Marine Research

ISSN: 1438-3888

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