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    Wyświetlanie 1-3 z 3
    Tytuł:
    Znaczenie wybranych czynników kształtujących powierzchnie terytoriów puszczyka Strix aluco w lasach Lubelszczyzny
    Importance of selected factors influencing the size of tawny owl Strix aluco territories in the forests of Lublin region
    Autorzy:
    Cios, S.
    Grzywaczewski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/993198.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Lubelszczyzna
    lasy
    ptaki
    puszczyk
    Strix aluco
    zageszczenie populacji
    wielkosc terytorium
    warunki srodowiska
    pory roku
    czynniki siedliska
    rzezba terenu
    fazy ksiezyca
    terytorializm
    strix aluco
    territory size
    phenological seasons
    Opis:
    Study analysis the influence of selected factors on the size of tawny owl Strix aluco territories in the forests of Lublin region. The survey was held in years 2005 and 2006 using the voice stimulation. The territory area was determined using Minimum Convex Polygon method. 43 territories with the average size of 18.8 ha were set on 26 study sites. The largest territory was found for birds during laying and incubation period (102.6 ha) and during after−breeding period (98.3 ha). Significant differences in territory size was found depending on the breeding density (high density – average territory size of 5.1 ha, low density – 26.9 ha). The average territory area in winter was 1.5 ha (range 1−2.7 ha), in spring 20.8 ha (1−102.6 ha), in summer 10.8 ha (1−65.5 ha) and in autumn 30.9 ha (1−98.3 ha).
    Źródło:
    Sylwan; 2013, 157, 05; 348-357
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ pory roku i dostępności gryzoni leśnych na skład pokarmu puszczyka Strix aluco w warunkach mozaiki polno-leśnej środkowej Polski
    Influence of season and availability of forest rodents on diet composition of tawny owl Strix aluco inhabiting field-forest mosaic in central Poland
    Autorzy:
    Gryz, J.
    Krauze-Gryz, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/989671.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    ornitologia
    sowy
    puszczyk
    Strix aluco
    sklad pokarmu
    gryzonie
    analiza skladu pokarmu
    mozaika srodowisk polno-lesnych
    dostepnosc pokarmu
    pory roku
    wybiorczosc pokarmowa
    pellets
    rodents trapping
    functional response
    season
    prey selectivity
    Opis:
    The aim of the study was to characterize the diet composition of tawny owl in relation to environmental variables: season and availability of small rodents. Study area was located in central Poland, in Łódź voivodship, in the area of Rogów Forest District. It comprised of a mosaic of forests and arable lands. The study was done in the years 2003−2010. Pellets were collected at least twice a year in 18 tawny owl territories. Material collected between April and September was categorised as coming from spring−summer, while this from October−March period as autumn−winter season. Simultaneously, in the years 2004−2007, changes in the number of small rodents were monitored by live−trapping. Standard procedures of pellet analyses were used to identify 1926 prey items. Generally, diet composition was dominated by small rodents. Yet, their share was significantly higher in autumn−winter season (71.3 vs. 57.3%). Among rodents, yellow−necked mice, common voles and bank voles were caught most often. Soricomorphs accounted for 3% of prey items in both seasons on average. Birds formed approximately 15% of prey items and their share was comparable in warm and cold half year. On the other hand, in a warmer period owls preyed on invertebrates more often (23.0 vs. 7.5%). A breadth niche was wider in a warm (D=4.01) half year than in cold one (D=3.36). When a peak of rodent number was recorded, owls preyed on bank voles twice as often as compared to other years (increase from 6.4 to 11% of prey items), while an increase in the consumption of yellow−necked mouse was lower (from 27.5 to 34.2%). Tawny owls preferred yellow−necked mice and bank voles were avoided. This study showed that in the Rogów Forest tawny owl is an opportunistic predator. However, composition of its diet does not absolutely reflect the structure of assemblage of small mammals as certain species are preferred.
    Źródło:
    Sylwan; 2016, 160, 01; 57-63
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pory roku a zbiorowisko grzybów zasiedlających pniaki czeremchy amerykańskiej
    Seasonal changes in fungi colonies inhabiting black cherry stumps
    Autorzy:
    Baranowska, M.
    Korzeniewicz, R.
    Kartawik, N.
    Behnke-Borowczyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/979585.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    gatunki inwazyjne
    czeremcha amerykanska
    Prunus serotina
    fitopatologia
    pniaki czeremchy
    grzyby zasiedlajace drewno
    grzyby mikroskopowe
    identyfikacja
    system Illumina
    pory roku
    illumina system
    invasive species
    dead wood
    saprotrophs
    wood−decay fungus
    Opis:
    Black cherry is an important invasive species in forest ecosystems in Poland. It developed mainly in Scots pine stands. The aim of the study was to identify microscopic fungi colonies inhabiting black cherry stumps. In the spring of 2017, wood samples were collected from stumps created after cutting in each subsequent month of 2016 in the Podanin Forest District (19°28'00'E, 52°04'00'N). Stumps up to 5 cm and more than 5 cm in diameter were selected for the study. In total, 72 discs from the first stage of the decomposition of wood were collected. The discs were drilled to obtain fine sawdust for further analysis. The trials were divided into four periods. DNA isolation was performed using the Plant Genomic DNA purification kit (ThermoScientific). The ITS1/2 rDNA region was used for species identification. The analysis was carried out using specific primers. The obtained product was purified and sequenced using the Illumina SBS technology. The resulting sequence was compared using the BLAST algorithm with reference sequences from the NCBI database. The communities of fungi inhabiting the black cherry stumps differed from each other. The highest number of taxa was identified in samples from stumps over 5 cm sheared in autumn and winter, while the lowest in stumps up to 5 cm sheared in spring and winter. Fungi belonging to the Ascomycota and Basidiomycota, Blastocladiomycota, Glomeromycota, Zygomycota and non−cultivable fungi and organisms belonging to other kingdoms were identified. Saprophytes from Menispora sp. dominated on the analysed stumps. The collection of fungi of larger stumps was more diverse and more numerous than on stumps with a smaller diameter. A greater diversity of taxa was distinguished by the stumps of tree fallen in the growing season. The majority of the analyzed samples were dominated by Ascomycota. Basidiomycota clusters dominated in the winter. The predominant share of saprotrophs shows the distribution of stumps. The most desirable effect of the research would be the indication of naturally occurring saprotroph, whose operation would reduce the black cherry’s yield strength. The applied method of sequencing based on the Illumina System was effective to determine the composition of the fungal population.
    Źródło:
    Sylwan; 2019, 163, 10; 872-880
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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