Table 1 Effect of the number of tourists together with the potential confounding factor of type of sediment granulometry and beach length on the richness of meiofaunal ZOTUs (zero-radius operational taxonomic units) at the three water depths, according to a type II ANOVA output of generalized linear models.

From: Human access impacts biodiversity of microscopic animals in sandy beaches

Predictor LR Chisq Estimate ± s.e. df P
Swash     
  Tourists 4.786 −0.170 ± 0.078 1 0.028
  Granulometry NA NA NA NA
  Length 0.003 −0.004 ± 0.072 1 0.956
Shallow     
  Tourists 0.000 −0.005 ± 0.300 1 0.987
  Granulometry 53.428 NA 4 <0.0001
  Length 0.003 −0.017 ± 0.298 1 0.957
Deep     
  Tourists 2.388 0.070 ± 0.045 1 0.122
  Granulometry 101.570 NA 4 <0.0001
  Length 0.060 0.011 ± 0.043 1 0.807
  1. LR Chisq likelihood ratio chi-square values, df degrees of freedom, P chi-square goodness of fit, s.e. standard error. Differences in granulometry were not analysed at the swash level because only one granulometry type was present for the level. P values for significant predictors are marked in bold.