Alien species in the fauna of the Black Sea (Chornomorskyi) Biosphere Reserve
The paper presents information on the composition of alien fauna of the Black Sea Biosphere Reserve (BSBR), the ways and mechanisms of inva-sions, the current state of alien species populations. Unique natural complexes are preserved in their natural or intact state in the territory of the Black Sea...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
National Museum of Natural History, National Academy of Sciences of Ukraine
2019-07-01
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| Series: | Geo&Bio |
| Subjects: | |
| Online Access: | https://museumkiev.org/public/visnyk/17_2019/GB1707_korolesova.html |
| Summary: | The paper presents information on the composition of alien fauna of the Black Sea Biosphere Reserve (BSBR), the ways and mechanisms of inva-sions, the current state of alien species populations. Unique natural complexes are preserved in their natural or intact state in the territory of the Black Sea Biosphere Reserve: lower Dnieper sands with psammophyte steppes and relict deciduous forests; standard of the West Black Sea variant of seaside-polynomial turf-cereals deserted steppes; accumulative formations of the Black Sea shelf; islands of continental and cumulative origin; shallow bays with a high level of bioproductivity, which determines their status as valuable wetlands of international importance; part of the Black Sea shelf. The list of invasive species which were reliably re-corded in the reserve’s territories includes 41 species: 2 species of ctenophores, 3 mollusks, 3 crustaceans, 1 polychaete, 11 insects, 7 fishes, 4 birds, and 10 mammals. Authors identify such categories of alien species: introduced species (intentionally or unintentionally) and species appeared in the result of expansion or re-colonization. In different groups, the part of alien species varies from 2 to 10 %. Analysis of the published data and results of long-term monitoring indicate that most of the studied biological invasions have no significant effects on the natural complexes of the BSBR. It is shown that ecosystems of preserved territories, which are saved in natural or semi-natural state, are more resistant to biological invasions than transformed ecosystems of the surrounding areas. However, there are some factors reducing resistance of natural com-plexes, among which are some features of the reserve’s territorial structure, presence of agrobiocenoses on the adjacent areas, and reduction of the abundance of some autochthonous species.
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| ISSN: | 2617-6157 2617-6165 |