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    Wyświetlanie 1-3 z 3
    Tytuł:
    Wpływ warunków świetlnych na namiotnika czeremszaczka - głównego szkodnika czeremchy zwyczajnej
    Light conditions effect on bird cherry ermine moth - the main pest of bird cherry
    Autorzy:
    Łukowski, A.
    Maderek, E.
    Karólewski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/991155.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ochrona lasu
    drzewa lesne
    czeremcha zwyczajna
    Prunus padus
    szkodniki roslin
    namiotnik czeremszaczek
    Yponomeuta evonymellus
    wystepowanie
    ograniczanie wystepowania
    warunki swietlne
    wysokie temperatury
    folivorous insect
    global warming
    high temperature
    leaf toughness
    Opis:
    This article studies the effect of light and high temperature on various parameters describing the growth and development of bird cherry ermine moth (Yponomeuta evonymellus L.) – the main pest of bird cherry (Prunus padus L.). We found that light significantly influences the moth masses and dynamics of their development. Moths developed from larvae feeding on leaves growing in full light conditions have a higher mass and shorter time of adult eclosion from pupa in comparison with larvae feeding on leaves growing in shade. However, extremely high summer temperature significantly disturbs pupation process in Y. evonymellus population. Our laboratory experiments indicate that a critical temperature is 36°C. Above this threshold the percentage of pupation drastically decreases (from ca. 70% to 35%). The conditions of intensive sun are better for some parameters of growth and development of bird cherry ermine moth. On the other hand, extreme summer temperatures, related with global warming, may restrict the occurrence of Y. evonymellus gradation.
    Źródło:
    Sylwan; 2014, 158, 08; 595-603
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zawartość węgla w biomasie pospolitych gatunków krzewów podszycia leśnego
    Carbon concentration in the biomass of common species of understory shrubs
    Autorzy:
    Jagodziński, A.M.
    Jarosiewicz, G.
    Karolewski, P.
    Oleksyn, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008422.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    pietro lesne
    podszyt
    krzewy lesne
    leszczyna pospolita
    Corylus avellana
    czeremcha zwyczajna
    Prunus padus
    czeremcha amerykanska
    Prunus serotina
    kruszyna pospolita
    Frangula alnus
    bez czarny
    Sambucus nigra
    deren swidwa
    Cornus sanguinea
    jarzab pospolity
    Sorbus aucuparia
    biomasa
    zawartosc wegla
    carbon concentration
    shrubs
    biomass components
    Opis:
    Experimental data on carbon concentration in woody plant species biomass are very scarce and value of 50% of dry biomass is widely accepted in carbon storage modeling. On the other hand, some studies have proved that the carbon concentration in woody species biomass is variable and depends on the component. Thus, the main goal of the study was to determine carbon concentration in biomass of 7 understory shrub species (basing on 282 individuals): Corylus avellana, Prunus padus, P. serotina, Frangula alnus, Sambucus nigra, Cornus sanguinea and Sorbus aucuparia as well as to analyze variability of carbon concentration among shrub species and biomass components. Carbon concentration was analyzed for leaves, fruits, branches, stemwood, stembark, coarse and fine roots. Our study revealed that the mean carbon concentration in biomass of all species studied was 47.7%. We found statistically significant differences in carbon concentration among the shrub species studied in all biomass components. The mean value for particular species was as follows: Prunus serotina – 47.5%, P. padus – 47.6%, Frangula alnus – 47.7%, Sambucus nigra – 47.7%, Corylus avellana – 47.8%, Cornus sanguinea – 47.8% and Sorbus aucuparia – 47.8%. Additionally, we found statistically significant differences in carbon concentration among biomass components within the species studied. The mean carbon concentration in fruit biomass was 46.2%, in fine roots – 47.0%, in leaves – 47.2%, in coarse roots – 47.7%, in branches – 47.9%, in stemwood – 48.5% and in stembark – 48.6%. The variability of carbon concentration in fruit, branches and leaves biomass was higher than in the remaining biomass components. The variability of carbon concentration in biomass of woody species should be considered in carbon storage modeling in forest ecosystems.
    Źródło:
    Sylwan; 2012, 156, 09; 650-662
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Species composition of arthropods on six understory plant species growing in high and low light conditions
    Autorzy:
    Karolewski, P.
    Lukowski, A.
    Adamczyk, D.
    Zmuda, M.
    Giertych, M.J.
    Maderek, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078197.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Cornus sanguinea
    Corylus avellane
    Frangula alnus
    Prunus padus
    Prunus serotine
    Sambucus nigra
    Opis:
    The quality of leaves as food for insects is affected both by plant species and the light conditions present during growth. Little information exists concerning the impact of these factors on the diversity of insects that live in the forest understory. We studied arthropod fauna on six understory plant species commonly occurring in Europe. Different groups of herbivorous insects were identified, as well as predatory insects and arachnids. We analysed the influence of both plant species and light conditions during growth (low light; high light) on the species spectrum, and the number of insect specimens present. The resulting data were investigated in relation to the susceptibility of plant leaves to feeding by folivorous insects, as determined in earlier studies. We compared the similarity in species diversity, based on the Sørensen’s coefficient, and discussed the potential causes of observed differences in leaf damages. We found a total of 153 arthropod taxa on studied plants, under both light conditions. Corylus avellana and Prunus serotina, species characterized by greater leaf damage, have a wider diversity of arthropod species, and a greater number of herbivorous insects. Generally, light conditions had a greater effect on arthropod abundance than on species diversity. For two plant species, C. avellana and P. serotina, light conditions strongly, but reversely, influenced the total number of insects and, thus, the extent of leaf damage. The number and abundance of zoophagous species, and ratio to folivores (except C. avellana) are associated more with plant species than with light conditions
    Źródło:
    Dendrobiology; 2020, 84; 58-80
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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