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    Wyświetlanie 1-3 z 3
    Tytuł:
    The vegetation of sands in the Chernihiv city (Ukraine)
    Autorzy:
    Lukash, Oleksandr
    Danko, Hanna
    Powiązania:
    https://bibliotekanauki.pl/articles/2024717.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    vegetation
    sands
    Chernihiv city
    anthropogenic influence
    Opis:
    The vegetation of the Chernihiv city sands (natural and technogenic origin) has rather high syntaxonomic diversity (17 associations and 5 initial communities) and the ruderal phytocoenoses prevail. Natural phytocenoses are represented to a small extent (Cyperetum flavescentis Koch 1926, Dichostylidi–Helochloetum alopecuroidis (Timar 1950) Pietsch 1973, Artemisia scoparia–Dianthus borbasii community, Kochietum arenariae Fijalk 1978). Synanthropic psammophytes species communities that are more resistant to anthropogenic influence, are formed under urban conditions. The ecological range of vegetation of sandy alluvia varies from xerophytic phytocoenoses in mineral-poor sand (Kochietum arenariae) to the communities, which indicate waterlogged areas with increased mineralization of water and saline bottom sediments (Typhetum laxmannii Nedulcu 1968). Itispossibletoobserve the adventization and apophization of sand vegetation, one of the indicators of which is the rupture of coenotic connections between the species of the community. These phenomena indicate that the process of synanthropization of the vegetation cover of the city keeps intensifying, and first of all, occurs in places of newly formed technogenic ecotopes.
    Źródło:
    Studia Quaternaria; 2020, 37; 31-44
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The meadow, psammophytic and ruderal plant communities with Solidago canadensis L. in Chernihiv Polesie (Ukraine)
    Autorzy:
    Danko, Hanna
    Lukash, Oleksandr
    Morozova, Iryna
    Boiko, Volodymyr
    Yakovenko, Oleksandr
    Powiązania:
    https://bibliotekanauki.pl/articles/2025976.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    vegetation
    anthropogenic influence
    Chernihiv Polesie
    Solidago canadensis L.
    Opis:
    In Chernihiv Polesie Solidago canadensis most often grows in ruderal communities of the Berteroëtum incanae association. Characteristic plant species of the Artemisietea vulgaris class have been found in many phytocenoses with Solidago canadensis. A typical ruderal community dominated by S. canadensis was found, in which characteristic species of the xero-mesophytic ruderal vegetation of the Onopordion acanthii are well represented. Initial communities with the S. canadensis coverage of 25 to 60% in combination with the species of this order and the characteristic species of other high syntaxa were found. Most of them are the transformed meadow phytocenoses of the river floodplains and less often – the psammophytic phytocenoses of pine terraces. The process of ruderalization of meadow ecosystems as a result of the invasion of S. canadensis in Chernihiv Polesie was revealed. This process is especially pronounced on the loess islands, where meadows change into semiruderal grasslands and herblands of the Convolvulo arvensis – Agropyrion repentis alliance. S. canadensis invasion leads to xerophytization and unification of the floodplains meadow phytocenoses grassland. The course of these processes is accelerated by anthropogenic pressure on ecosystems and has irreversible consequences. S. canadensis rarely occurs in the Koelerio–Corynephoretea canescentis class psammophytic communities.
    Źródło:
    Studia Quaternaria; 2021, 38, 2; 149-158
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The contemporary distribution of the aquatic Tertiary relict plant species of the Bern Convention in eastern Polesye
    Autorzy:
    Lukash, Oleksandr
    Miroshnyk, Iryna
    Strilets, Svitlana
    Rak, Oleksandr
    Sazonova, Olena
    Powiązania:
    https://bibliotekanauki.pl/articles/2025983.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    anthropogenic influence
    aquatic vegetation
    Bern Convention
    eastern Polesye
    Tertiary relict
    Opis:
    In spite of modern trends in the development of the eastern Polesye flora, the relict have been preserved in the aquatic ecotopes of Europe, including eastern Polesye. The paper highlights the peculiarities of the distribution in the region of three aquatic Tertiary relics preserved by the Bern Convention. According to the results of a field research, the degree of a modern rarity of the aquatic relict species in eastern Polesye was established, in particular, a very rare species (Aldrovanda vesiculosa), a moderately rare species (Trapa natans) and a relatively rare species (Salvinia natans). The current distribution of these relict species in the region has been positively affected by the increase in the values of maximum temperatures and isotherms of the summer months. A negative impact is made by the abrupt changes in the hydrological regime and the growth of anthropogenic eutrophication of reservoirs. Aldrovanda vesiculosa eliminates with minor changes in living conditions; Salvinia natans is the most tolerant to anthropogenic factors, but shows annual fluctuations in numbers; Trapa natans is stable distributed and has a tendency to expanding of its populations. The relics are the dominants of the Salvinio–Spirodeletum (polyrrhizae), Lemno Utricularietum vulgaris, Spirodelo–Aldrovandetum vesiculosae, Trapetum natantis and Trapо–Nymphoidetum (peltatae) communities.
    Źródło:
    Studia Quaternaria; 2021, 38, 2; 127-132
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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