Syntaxa of Dryas tundra of West Sayan mountains
2015
Zibzeev, E. G., Central Siberian Botanical Garden, Novosibirsk, Russia. [email protected] | Nedovesova, T. A.,
Classification and coenotic characterization of Dryas oxyodonta Jus. dominated tundra in West Sayan have been performed. Ecological, geographic, and phytocoenotic characteristics of four associations: Vaccinio uliginosi-Dryadetum oxyodontae ass. nov. hoc loco (Class Loiseleurio-Vaccinietea Eggler ex Schubert 1960), Flavocetrario cucullatae-Dryadetum oxyodontae ass. nov. hoc loco, Festuco sphagnicolae-Dryadetum oxyodontae ass. nov. hoc loco, Carici ledebouriae-Dryadetum oxyodontae ass. nov. hoc loco (Class Carici rupestris-Kobresietea bellardii Ohba 1974) have been represented. Studied communities are formed in the altitude range from 1640 to 1850 m above sea level. They have a strong topological and expositional confinement. The basis of their coenoflora is gekistoterms and psychrophytes. In terms of altitudinal zonation, alpine and arctic-alpine species; arealogically, Holarctic and North Asian element dominate.
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