3.1 | Trait-environment relationships
In all multiple regression models, the colour lightness of the
assemblages of odonates increased with increasing annual mean
temperature and body volume decreased with increasing annual mean
temperature (Table 1). In all multiple regression models, the colour
lightness of the assemblages of odonates was not affected by annual
precipitation, but except for phylogenetically corrected models, body
volume increased with increasing annual precipitation. These results
were consistent with the results of single regression models (except
that single regression of the average and phylogenetically predicted
part of the variation in the colour lightness and annual mean
temperature were not significant) and with the results of models that
accounted for spatial autocorrelation (Table 1). The two climate
predictors together explained up to between 20 % and 31 % of the
variation in colour lightness and between 2 % and 4 % of the variation
in body volume (Table 1, see Table S3 for single regression models).