Using a principal component plot and forward selection in a multiple regression we identified
the most important predictors of regional species richness estimates.
Wetested the predictions of the species richness-energy hypothesis using climatic
variables at regional scale, and of the metabolic theory using the inverse of air
temperature. To evaluate the influence of regional and local environmental drivers,
we carried out a redundancy analysis between crustacean species occurrences and
regional climate and lake environmental factors on a subset of 458 lakes