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Table 2

Results of the t-test between the daytime and nighttime data. Variables “Scrapers” and “Biomass” are not displayed as they were evaluated with Wilcoxon tests (see the values and the results in the main text). df: degrees of freedom for the t-statistic.

Variables df t p-value
Abundances 68 –0.4269 0.6708

Families’ Richness 68 –0.0329 0.9739

Shannon Index 68 0.0838 0.9335

Predators (No. ind) 67 0.9308 0.3553

Collectors (No. ind) 67 –0.9911 0.3252

Shredders (No. ind) 67 0.6572 0.5133

Filter feeders (No. ind) 68 0.0326 0.9741

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