Table 4 Summary of the traits-impervious surfaces model.

From: A large-scale dataset reveals taxonomic and functional specificities of wild bee communities in urban habitats of Western Europe

Predictor

Coefficient (± SE)

z-value

p value (adj)

Proportion of impervious surfaces

− 0.20 (0.05)

− 3.89

< 0.0001

Traits, no interaction

Nesting: above versus below

0.02 (0.18)

0.09

0.92

Lectism: specialist versus generalist

− 0.54 (0.17)

− 3.16

0.002

Sociality: solitary versus social

− 0.96 (0.23)

− 4.08

< 0.0001

Size: large versus small

− 0.17 (0.16)

− 1.02

0.31

Traits, interacting with proportion of impervious surfaces

Nesting: above versus below

0.31 (0.03)

11.4

< 0.0001

Lectism: specialist versus generalist

− 0.09 (0.03)

− 3.03

0.002

Sociality: solitary versus social

− 0.08 (0.03)

− 2.68

0.007

Size: large versus small

− 0.02 (0.02)

− 0.69

0.49

Predictor

Chisq

p value

Biogeographical zone

56.877

 < 0.0001

  1. p values in bold are significant (α = 5%). The significance of the categorical variable “Biogeographical zone” was evaluated using a Likelihood Ratio Test. This model is a mixed-effect model, the random variables included are the sites ID, nested in the sampling categories, as well as the species names. Coefficients are given with their standard error. Traits in bold are the reference modalities. p value(adj) means that p-values were adjusted with the False Discovery Rate adjustment method.
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