The Ratio of the Frequency of Occurrence of Mono- and Polydominant Communities in Synanthropic Vegetation with Different Participation of Alien Species

Pub Date : 2023-12-01 DOI:10.1134/s2075111723040021

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Abstract

If the invasion of alien species into the vegetation cover leads to an increase in the area of monodominant communities, then this may have negative consequences for native plant species in the long term. We compared the frequency of occurrence of communities with the dominance of alien species, with the dominance of native species, as well as polydominant communities, in 71 sites of synanthropic vegetation in the vicinity of the settlements of the Republic of Adygea and Krasnodar Territory (Russia). The results showed that sites with a higher frequency of alien species dominance are characterized by a predominantly lower frequency of native species dominance, as well as a lower occurrence of polydominant communities and, accordingly, a higher occurrence of monodominant communities in general. At the same time, the peculiarities of the biology of alien plant species reaching a high coverage in the studied areas suggest that this is more likely due to the ability of alien species to quickly populate disturbed (open) habitats than to displace native species from closed grass stands. Therefore, the influence of the factor assessed by us on the floristic richness of synanthropic vegetation in the study area can be considered as limited. However, in other regions of the world, as follows from the publications known to us, it can be significant.

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外来物种参与程度不同的同生植被中单优势群落和多优势群落出现频率之比

摘要如果外来物种入侵植被导致单优势群落面积增加，那么从长远来看，这可能会对本地植物物种产生负面影响。我们比较了阿迪加共和国和克拉斯诺达尔边疆区（俄罗斯）居民点附近 71 个同步植被地点中外来物种占优势的群落、本地物种占优势的群落以及多优势群落的出现频率。结果表明，外来物种优势频率较高的地点，本地物种优势频率主要较低，多优势群落的出现率也较低，因此，单优势群落的出现率一般较高。同时，外来植物物种在所研究地区达到高覆盖率的生物学特性表明，这更有可能是由于外来物种有能力迅速在受干扰（开阔）的生境中繁殖，而不是取代封闭草地上的本地物种。因此，可以认为我们所评估的因素对研究地区同生植被的植物丰富度影响有限。然而，从我们已知的出版物来看，在世界其他地区，该因素的影响可能很大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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