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Wyszukujesz frazę "Acer negundo" wg kryterium: Temat

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    Wyświetlanie 1-2 z 2
    Tytuł:
    Three Maples (Acer L., Aceraceae Juss.) in the Republic of Mordovia, Russian Federation
    Autorzy:
    Khapugin, Anatoliy A.
    Silaeva, Tatyana B.
    Utorova, Yulia N.
    Powiązania:
    https://bibliotekanauki.pl/articles/2182168.pdf
    Data publikacji:
    2016-12-31
    Wydawca:
    Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
    Tematy:
    Acer campestre
    Acer negundo
    Acer platanoides
    Acer tataricum
    invasive species
    population
    rare species
    Republic of Mordovia
    Opis:
    Genus Acer in the Republic of Mordovia is presented by four plant species: Acer campestre L., A. negundo L., A. platanoides L. and A. tataricum L. For A. campestre and A. tataricum we investigated accompanying flora composition and conducted its analysis; characteristics of populations were carried out. Seed reproduction of A. negundo was investigated in seminatural and anthropogenically disturbed habitats. Seed reproduction is of little importance for the maintenance of A. campestre populations on the north-eastern border of its range. This is offset by an active vegetative propagation by root offsprings. So, very few A. campestre individuals reach the generative age. A. tataricum is capable to grow in open as well as in woodland habitats in floodplains. Sufficient light and moderate moisture are the most significant environmental factors for A. tataricum populations. Depressing of tatarian maple is observed under conditions of shading in plant community with A. negundo dominance. Analysis of the accompanying floras of A. campestre and A. tataricum shows the coenotical confinement of these maple species. Seed reproduction of A. negundo was significantly higher in seminatural habitats with dominance of ash-leaved maple than it was in urban environment. Probably, this is a manifestation of indirect facilitation of the adult A. negundo tree canopy for the growth of its own seedlings by oppressing of other plants (e.g. A. tataricum seedlings). Thus, we showed relevance for investigations of interactions between closely related tree species.
    Źródło:
    Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2016, 1; 129-143
    2543-8832
    2545-0999
    Pojawia się w:
    Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Leaf blade structure and the tolerance of Acer negundo L. (box elder) to the polluted environment
    Autorzy:
    Dineva, S B
    Powiązania:
    https://bibliotekanauki.pl/articles/41089.pdf
    Data publikacji:
    2005
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    polluted air
    polluted environment
    sulphur dioxide
    stress factor
    box-elder
    Acer negundo
    industrial emission
    environment pollution
    leaf blade structure
    stress tolerance
    Opis:
    Polluted air is a stress factor that contributes to the decline of urban trees. Air pollution may cause short-term (acute) damage, which is immediately visible and long-term (chronic) damage, which can lead to gradual tree decline. Long-term damage may predispose trees to other disorders. The impact of technogenic factors on the leaf’s anatomical structure of Acer negundo L. (Box elder) was studied. The thickness of the upper cuticle is increased when compared to those from an ecologically pure area. A change in the rate of mesophyll tissue is due to the enlargement of the palisade parenchyma. The thickness of lower epidermal cells is decreased. All changes of the leaf blade structure are significant and are in direction of increasing the xerophyte characteristics of the leaves. Box elder is native to much of temperate North America. This is a tree of lowlands and wet hardwood forests. As such, we can assume that the registered changes are adaptive responses of the tree to the contaminated environment and that the tree can be considered to be relatively tolerant.
    Źródło:
    Dendrobiology; 2005, 53; 11-16
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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