SEASONAL DYNAMICS OF RARE PLANT SPECIES IN THE TAIGA WOODLANDS OF THE PINEZHSKY RESERVE AND ADJACENT TERRITORIES
The article analyzes long-term phenological data on rare plant species of the Pinega Nature Reserve and adjacent territories. The timing of the onset of the main phenophases in red book species (Calypso bulbosa (L.) Oakes Cypripedium calceolus L., Dryas punctata Juz., Saxifraga aizoides L. and Thymus talijevii Klok. et Shost. and the species recommended for bioassay (Pinguicula alpina L., Salix arbuscula L., Epipactis atrorubens (Hoffm. ex Bernh.) Schult. and Hypopytis monotropa Crantz.) for the period from 1981 to 2021. Long-term observations have shown that the amplitude between the earliest and the latest dates of the onset of phenophases ranges from 20 to 62 days. In all the studied species, there is a significant amplitude of the onset of the beginning of vegetation (25-62 days), the most constant periods of mass flowering of species, in different species, the amplitude of the onset of this phase ranged from 10 to 36 days.