Fig. 2: Pearson’s residuals of chi-squared tests for aquatic taxa across environments, habitats, geographic zones and time-periods. | npj Biodiversity

Fig. 2: Pearson’s residuals of chi-squared tests for aquatic taxa across environments, habitats, geographic zones and time-periods.

From: Italian still life paintings as a resource for reconstructing past Mediterranean aquatic biodiversity

Fig. 2

Pearson’s residual values of chi-squared tests performed on the proportion (%) of taxa from a, b aquatic environments (freshwater, anadromous, catadromous, marine) and c, d habitats (pelagic, benthopelagic, benthic) across a–c geographic zones (X-squared = 71.60, p value < 0.001 and X-squared = 13.89, p value = 0.008, for environments and habitats, respectively) and b–d time-periods (X-squared = 13.95, p value = 0.03 and X-squared = 2.88, p value = 0.58, for environments and habitats, respectively). Residual values are indicated by the coloured scale bars, with positive (blue) and negative (red) associations between variables, and dot size indicates the strength of the relationship.

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