Adventive component flora of the southern part of Sakhalin Island

The article is devoted to the adventive flora of the southern part of Sakhalin Island. Nowadays, 274 species of adventive plants, belonging to 192 genera and 57 families, have been identified here. Five families (Amaranthaceae, Cannabaceae, Commelinaceae, Linaceae, and Malvaceae) are represented by invasive species only. The structure of the leading families and genera is analyzed, the participation of adventive species information of plant communities is indicated. Adventive species are classified into life forms, method of entering and degree of naturalization.

Adventive and invasive plant species of natural ecosystems in the Republic of Khakassia

In this study, 56 adventive species have been identified in Khakas flora to date. In terms of the introduction method, xenophytes dominate; this group is composed of 44 species, which is 78.6% of all the adventive species under study. The ergasiophyte group consists of 12 species (21.4%). According to the naturalization degree, we identified three groups: epecophytes, agriophytes, and ephemerophytes. The epecophyte group is in the lead and consists of 21 species (37.5%). The agriophytes are represented by 19 invasive species (33.9%). The ephemerophyte group is composed of 16 species (28.6%). Thus, the ratios of the synanthropic-plant groups defined according to the introduction method and naturalization degree indicate that most of these adventive plants have been introduced unintentionally and successfully established themselves on a territory new to them. The adventive fraction of natural ecosystems in Khakas flora contains 20 species included in the report “The Black Book of the Flora of Siberia” [1].

Bioresources of Wild Medicinal Plants in Canyons Gulobod and Saphedchashma (Gissar Ridge, Tajikistan)

The results of assessing the biodiversity and resources of wild plants on the territory of Gulobod and Saphedchashma canyons in the Hissar Mountains of Tajikistan have been presented. In the territory of the Gulobod canyon, 79 various species of medicinal plants have been identified. Out of these, three plants are listed in the Red Book of the Republic, eight are endemic ones, and four are adventive plants. Out of the studied 15 vegetation beds, commercial ones were 7, which were formed by horseheal – Inula helenium L.- and small-flowered oregano – Origanum tyttanthum Gontsch., the total area of which reached 3.3 ha. In the territory of the Saphedchashma canyon, 50 most common medicinal plants had been identified, formed by representatives of 38 species belonging to 17 various families.

MATERIALS TO THE RESUME OF ADVENTIVE FLORA OF THE WESTERN PART OF SOKOLII HILLS

The floristic researchings carried out in 2011-2012 years at the western part of Sokolii Hills revealed 229 species of vascular plants, among them 27 species of adventive plants belonging to 27 genera, 17 families, 1 class and 1 phylum.