Influence Of Species-Transformers Invasion On The Vegetation Dynamics For Fallow Land Ukrainian Polissya
Journal Title: Біоресурси і природокористування [Biological Resources and Nature Management] - Year 2018, Vol 10, Issue 1
Abstract
Invasions of the species-transformers are reasons for changing the processes of dynamics natural plant communities and their species composition. Newly formed communities often have quarantine species that are dangerous to humans and pestiferous weeds. The behavior of these species is often difficult to predict, so their study is extremely relevant. The purpose of our study is to establish the presence of species at different stages of overgrowth of fallow, determining influence on vectors and rate of succession. We made 537 standard geobotanical descriptions. We chose species through their ability to radically change the ecosystem in which it penetrates. This is in accordance with the D. Richardson classification. We used the B. Yakubenko classification for determine the early stages of successions and traditional distribution of dominant biomorphs for late stages of successions. Most species-transformers are in communities of rhizome stages (69%), shrub-forest stages (69%) and forest stages (68%). The least number of this species on the subshrub stages (19%.). Some species are found on most stages of succession (Conyza canadensis (100%), Acer negundo (71%)), some species are poorly distributed (Elaeagnus angustifolia (14%), Hippopha¸ rhamnoides (14%), Rudbeckia laciniata (14%)). Species-transformers are able to slow down the processes of the vegetation dynamics. Sometimes they can lead to a complete stop, creating a catastrophic climax (Robinia pseudoacacia). Our results often correspond to the data obtained by other Ukrainian researchers of the synanthropic flora. However, there is a need to study the influence of species-transformers on dynamics in different edaphic conditions.
Authors and Affiliations
I. V. Khomiak
Keywords
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