3.2. Traits correlations
Our tests revealed that PL was significantly related only to the number
of pollinator functional groups (Table 2, Fig.2). We found no
significant relationship between PL and other tested traits, including
the multiple regression with all traits (F=0.83, p=0.57). The only trait
selected by the AIC-based stepwise selection was again the plant
specialization. All correlation indices between particular quantitative
floral traits are presented (Table 1, Appendix A).
Both models, the unimodal and the linear, were significant (unimodal:
F=7.95, p=0.003, Fig.2B; linear: F=4.39, p=0.049, Fig.2A). However, due
to the relatively small number of target plant species, this unimodal
relationship may be greatly affected by outlying values at the edges.