FLORISTIC FINDINGS OF ALIEN VASCULAR PLANTS SPECIES IN OMSK REGION
Natalya V. Plikina1, Andrey N. Efremov2, Vladimir Yu. Teploukhov3
a:2:{s:4:"TYPE";s:4:"HTML";s:4:"TEXT";s:270:"1Omsk State Pedagogical University, Omsk, Russia
2Research Center for Fundamental and Applied Problems of Bioeсology and Biotechnology, Ulyanovsk State Pedagogical University, Ulyanovsk, Russia
3Independent researcher, Omsk, Russia";}
Keywords: vascular plants, floristic finding, alien species, Omsk region
Abstract
As a result of the studies conducted in 2020-2022, seven species and subspecies of alien vascular plants were identified on the territory of Omsk Region. Four of them have not been previously recorded for this territory (Inula helenium L., Prunus pumila L. var. pumila и Prunus pumila var. besseyi (L.H. Bailey) Waugh., Rosa spinosissima L.). For three species (Astragalus cicer L., Aquilegia vulgaris L. and Centaurea jacea L.) new localities were found. For each species (subspecies) a list of locations is provided with an indication of the geographical coordinates of the collection or observation sites. The detected findings of alien species are mainly confined mainly to settlements and areas under intensive economic turnover. The path of introduction and the degree of naturalization of alien species were assessed. By mode of introduction Centaurea jacea and Inula helenium are xenoergasiophygophytes, while Astragalus cicer, Aquilegia vulgaris, Prunus pumila var. besseyi, P. pumila var. pumila and Rosa spinosissima are ergasiophygophytes. The appearance of Prunus pumila var. pumila in the region is probably connected with creation of forest windbreaks in steppe areas of the region in 1970-1990s, appearance of other species is connected with their cultivation in homestead plots. Centaurea jacea is an autochthonous species in the southern subtaiga of Omsk Region, while in the forest-steppe zone it is an alien species. According to the degree of naturalisation, most of the detected plants are colonophytes, while Centaurea jacea is an epecophyte in the forest-steppe and Aquilegia vulgaris is an ephemerophyte. Findings were confirmed by herbarium specimens or geo-referenced photographic observations.
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