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Tall-forbs vegetation of the class Filipendulo-Artemisietea montanae Ohba 1973 from Kamchatka, Sakhalin and the Kuril Islands

2024; Linguagem: Inglês

10.17581/bp.2024.13211

2410-3713

Kirill A. Korznikov, Violetta D. Dzizyurova, Tatyana Petrenko,

Lichen and fungal ecology

We describe three new associations and two subassociations of the previously known association of the tall-forb vegetation class Filipendulo–Artemisietea montanae Ohba 1973 from Kamchatka, Sakhalin, and the Kuril Islands. The association Cirsio kamtschaticae–Reynoutrietum sachalinensis Ohba 1973 nom. mut. was originally described on Hokkaido, and we recognised the subassociations typicum and urticietosum platyphyllae within it. Besides Hokkaido, communities of this association are also present on Sakhalin and the Kuril Islands. The association Aconito umbrosi–Koenigietum weyrichii ass. nov. is described from vegetation data collected in the mountainous regions of northern Sakhalin (the East Sakhalin Mountains), where communities form in the narrow valleys of mountain springs and streams with long-melting snow deposits. Communities of the association Symplocarpo renifolii–Petasietum gigantei ass. nov. are known from the Krillion Peninsula (southwestern Sakhalin) and nearby Moneron Island. A specific floristic and physiognomic feature of these communities is the layer of Symplocarpus renifolius under the canopy of giant forb species. The association Veratro oxysepali–Filipenduletosum camtschaticae ass. nov. unites tall-forb communities of Kamchatka. In these tall-forb thickets, common species are found in more southern territories, such as Artemisia montana and Petasites japonicus subsp. giganteus, as well as other species of the East Asian floristic region, are not present.