Alien species of vascular plants on the meadows of the Republic of Karelia

Resumo

We present the results of analyses of meadow partial flora and vegetation concerning invasive species in the Republic of Karelia. A total of 10 out of 390 vascular plant species occurring currently on Karelian grasslands are listed as invasive by different authors. However, most of those species are represented by single samples in single geographical locations. Only two of them (Festuca elatior and Thlaspi caerulescens) can integrate into meadow communities but do not transform them significantly.