Structure pollinators complexes of some species of Cardueae tribe (Asteraceae) in condition middle taiga of Komi Republic

This article presents the results of a study of the species composition and structure of the pollinator complexes of five species of the tribe Cardueae (three introduced Serratula coronata L., S. inermis Gilib., S. quinquefolia M. Bieb. Ex Willd., and two species of native flora - Centaurea phrygia L and Cirsium heterophyllum (L.) Hill.). Determined 90 species of five orders. The maximum species diversity observed in C. heterophyllum (48 species), the minimum on S. quinquefolia (23 species). The studied plant species are different structure of anthophilous insect complexes. The leading group of visitors on C. phrygia and C. heterophyllum are Diptera (46-48%). The share of bumblebees is 35-39%. S. coronata and S. innermis mainly pollinated by bumblebees - 66-68%. The share of Diptera on these plants increase to 18-23%. S. quinquefolia was visited almost exclusively by bumblebees - decrease to 94%. The abundance of Diptera does not exceed 6%.