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    Wyświetlanie 1-6 z 6
    Tytuł:
    Ocena stopnia uszkodzenia liści drzewostanów dębowych Nadleśnictwa Wołów dotkniętych klęską powodzi
    Assessment of leaf damage in oak stands in the flood-affected Wolow Forest Division
    Autorzy:
    Kuzmiński, R.
    Szewczyk, W.
    Korczyński, I.
    Łakomy, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311485.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    tereny pokleskowe
    tereny popowodziowe
    drzewostany debowe
    drzewa lesne
    dab
    Quercus
    defoliacja
    liscie
    uszkodzenia lisci
    szkodniki roslin
    owady
    Nadlesnictwo Wolow
    flood
    defoliation
    Wołów Forest Division
    oak die-back
    pest insects
    oak stands
    Opis:
    This study examines the effect of flood on oak stands in the Wołów Forest Division by assessing the loss of leaf area due to insect feeding as determined in laboratory analyses of samples collected from standing trees. We compared stands, in which water stagnated for at least one month and stands with no water stagnation. It was found that the mean damage to the carbon assimilating organs of stands with stagnating water was lowered by approximately 6% compared to stands that were not affected by flood. Thus, no definite effect of flood contributing to losses of carbon assimilating organs in oak trees could be shown.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 3; 297-303
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chrząszcze (Coleoptera) występujące w próchnie brzóz (Betula spp.) na terenie Kampinoskiego Parku Narodowego
    Beetles (Coleoptera) occurring in decaying birch (Betula spp.) wood in the Kampinos National Park
    Autorzy:
    Sawoniewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318231.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    parki narodowe
    Kampinoski Park Narodowy
    siedliska lesne
    drzewa lesne
    brzoza
    Betula
    drzewa martwe
    owady saproksyliczne
    chrzaszcze
    Coleoptera
    sklad gatunkowy
    struktura zgrupowan
    forest type
    saproxylic insects
    Kampinos National Park
    Opis:
    The composition and structure of beetle clusters living in rotting birch wood in Kampinos National Park was investigated. Photoeclectors were used to remove beetles from collected wood samples. Ten different research plots, each corresponding to a different forest type, were sampled every month over a 1-year period. A collection of 3256 beetles from 37 families comprising 206 species was amassed during the study. The collected beetles were divided into trophic families, species rareness, and constancy and site fidelity classes. At the more fertile sites, species only able to live on highly-decayed wood were collected (F3), also species facultatively able to live on either dying trees or decaying wood (F1), species that do not live on decayed wood (F0) and other rare species. Trophic group of carnivores (Z) provided most species on more fertile sites. At coniferous forest sites, as well as mixed deciduous forest sites, most individuals collected belonged to mycophagous and myxomycophagous trophic groups. At the other sites, the largest group of collected individuals was zoophagous. The number of rare species was positively related to site fertility. The average number of species increased in accordance with increasing site fertility, however this trend was only statistically significant when applied to moist coniferous forest (Bw) and moist mixed broadleaved forest (LMw) sites. The study revealed differences in the composition and structure of beetle clusters from different forest types. These differences were probably not directly related to site type, but more likely to the form of nature conservation imposed on a particular area and the potential number of decayed deciduous tree trunks. Two different clusters of saproxylic Coleoptera related to birch rot were distinguished: the first includes strictly protected deciduous forest types, the second contains the remaining forest types.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 1; 71-85
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ zmian temperatury i wilgotności na cykle rozwojowe i znaczenie owadów w ekosystemach leśnych w związku z prawdopodobnymi zmianami klimatycznymi
    The effect of temperature and humidity changes on insects development their impact on forest ecosystems in the context of expected climate change
    Autorzy:
    Jaworski, T.
    Hilszczański, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317794.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    zmiany klimatyczne
    zmiany temperatury
    zmiany wilgotnosci
    oddzialywanie na zwierzeta
    owady
    cykl rozwojowy
    dynamika populacji
    znaczenie ekologiczne
    ekosystemy lesne
    global warming
    forest insects
    population dynamics
    forest insects outbreaks
    range shift
    phenology
    forest management
    Opis:
    Ongoing climate change is mainly evident as increased in average temperature. It is expected to have a significant impact on world's biomes, with forest ecosystems especially vulnerable to these changes. The effect of climate change on forests is both indirect, through its impact on various tree species of different ecological requirements, and direct, through its impact on all living components of the forest ecosystem. Among the latter, insects are the group of the greatest importance, including species detrimental to forest health. The impact of climate change on forest insects may be reflected in their distribution, phenology, activity, number of generations and, indirectly, through impact on their natural enemies. Predicting the future direction and pace of the climate change, as well as direct and indirect consequences of its effect on forest insects is difficult and often subject to considerable inaccuracy. The paper presents a review of data from the published literature in this area of study. The influence of the basic climate parameters, temperature and humidity, on forest herbivore insects is discussed, particularly in the context of the most probable scenarios of climate change, i.e. the gradual increase in the average temperature. Observed and projected impacts of climate change in relation to the influence of herbivorous insects on forest ecosystems are characterized. We present some of the possible adaptation strategies of forest management to the expected climate changes.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 4; 345-355
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Owady w pokarmie puszczyka (Strix aluco) na terenach leśnych w środkowej i północno-wschodniej Polsce
    Insects in the diet of the tawny owl (Strix aluco) in forest areas of central and north-eastern Poland
    Autorzy:
    Skłodowski, J.
    Gryz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/995758.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lasy
    sowy
    puszczyk
    Strix aluco
    sklad pokarmu
    wypluwki
    analiza skladu pokarmu
    owady
    wykaz gatunkow
    Puszcza Kampinoska
    Lasy Rogowskie
    Biebrzanski Park Narodowy
    tawny owl
    opportunistic predator
    pellets
    insects
    forest
    Opis:
    Studies on invertebrates in the diet of the tawny owl were carried out in Rogów, Kampinos and Białowieża forests as well as in the mosaic ecosystems of Biebrza wetlands. Invertebrates were identified on the basis of their remnants found in the pellets. The aim of the study was to answer the two questions: (1) does the tawny owl select its invertebrate prey or is it an opportunist predator, (2) is it possible to characterize places where the owl preys just on the basis of the invertebrate species composition in its diet. As a result we found out that indeed the tawny owl was an opportunist predator towards invertebrates, and also that the invertebrate species composition found in the pellets was a good indicator of the type of hunting habitat as it showed that the owl caught invertebrates in various sites, i.e. tree hollows, rotten trunks, soil litter or open area.
    Źródło:
    Sylwan; 2012, 156, 01; 36-46
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aktywność grzybów entomopatogennych wobec leśnych foliofagów i kambiofagów
    Activity of entomopathogenic fungi against forest insects feeding on leaves, bark and cambium
    Autorzy:
    Malinowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/973785.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    foliofagi
    grzyby entomopatogenne
    kambiofagi
    ochrona lasu
    zwalczanie szkodnikow
    leśnictwo
    biologiczne metody ochrony roślin
    biological control
    forest harmful insects
    entomopathogenic fungi
    Opis:
    The paper presents results of various experiments on the use of entomopathogenic fungi (e.g. Beauveria bassiana, B. brongniartii, Metarhizium anisopliae, Lecanicllium spp.) to control leaf feeding insects (Lymantria spp., Dendrolimus pini, Cephalcia abietis, Diprionidae) and insects feeding on bark and cambium (Hylobius spp., Scolytinae)
    Źródło:
    Sylwan; 2011, 155, 03; 188-194
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Konsekwencje ekologiczne gradacyjnego występowania liściożernych owadów leśnych
    Ecological consequences of forest leaf-feeding insect outbreaks
    Autorzy:
    Malinowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1015741.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    foliofagi
    owady
    szkodniki roslin
    skutki ekologiczne
    ochrona lasu
    lesnictwo
    gradacja
    drzewa lesne
    forest defoliating insects outbreaks
    non−target impact
    insecticides activity
    bacillus thuringiensis
    bioinsecticide activity
    Opis:
    The aim of his work was to evaluate the impact of defoliating insects outbreaks on other species of insects and on forest stands. The above is discussed from two points of view: 1) what is the impact of outbreaks when treatments with insecticides were not executed and 2) what is the impact of outbreaks when treatments with insecticides were executed.
    Źródło:
    Sylwan; 2007, 151, 08; 35-41
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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