STRUCTURE, COMPOSITION, AND SPATIAL DISTRIBUTION OF AN ALIEN COMPONENT OF FLORA SOUTH OF THE BLACK SEA OF KRASNODAR REGION OF RUSSIA

Eghoshin A.V.

RJEE Vol. 6 (1). 2021 | DOI: 10.21685/2500-0578-2021-1-2
Abstract | PDF (Rus) | Additional files

Receipt date 09.12.2020 | Publication date 26.03.2021

 

STRUCTURE, COMPOSITION, AND SPATIAL DISTRIBUTION OF AN ALIEN COMPONENT OF FLORA SOUTH OF THE BLACK SEA OF KRASNODAR REGION OF RUSSIA

 

A. V. Eghoshin
Sochi National Park, Russia, 74 Kurortniy prosperct, Sochi, 354002, Russia
avegoshin@gmail.com

 

Abstract. Alien species represent one of the most severe threats to the planet’s biodiversity, which is becoming more acute in the context of accelerating globalization. The species composition of the alien flora of the south of the Black Sea coast of the Krasnodar region of Russia is analyzed. The analysis of taxonomic, biomorphological, hygromorphic spectra of foreign species is carried out. The alien component of the flora is classified according to the degree of naturalization, origin, and time of introduction. Modeling of the spatial distribution of alien species was carried out using Maxent. Bioclimatic raster images of Worldclim, as well as rasters of the distance of points in space from roads and watercourses, were used as sources of predictor variables. It has been established that the region’s flora alien component is the richest in species of the families Amaranthaceae, Asteraceae, and Poaceae. By the method of introduction, most alien plant species are unintentionally introduced and confined to disturbed habitats. 53 % of all studied alien species are autochors. The homeland of 41 % of all the introduced species of the region is the Americas. Asian species account for 32 % of all alien species in the area. As a result of spatial modeling, it was found that the bioclimatic conditions of the research area are most comfortable for growing only 74 of the 182 most aggressive alien plant species. Cartographic images were obtained that characterize the suitability of the territory of the south of the Russian Black Sea region for the growth of exotic species. As a result of the zoning, it was found that the area of the studied region most susceptible to the introduction of alien species is 1222.2 km2 (36 % of the surveyed territory). The most favorable for the growth of most alien species are the valleys of large mountain rivers.

 

Keywords: infestations, alien plant species, Caucasus, Krasnodar region, Sochi, the south of the Russian Black Sea region, modeling, GIS, Maxent

 

For citation: Eghoshin A.V. Structure, composition, and spatial distribution of an alien component of flora south of the Black sea of Krasnodar region. Russian Journal of Ecosystem Ecology. 2021;6(1). (In Russ.). Available from: https://doi.org/10.21685/2500-0578-2021-1-2

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