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    Wyświetlanie 1-4 z 4
    Tytuł:
    Wpływ wieku drzewostanu na dostępność pokarmu danieli
    Autorzy:
    Borkowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1178263.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    dostepnosc pokarmu
    daniel
    zwierzeta lowne
    lowiectwo
    drzewostany
    wiek drzewostanu
    lesnictwo
    fallow deer
    forest age
    food availability
    Opis:
    Influence of forest age on fallow deer food availability was studied in two localities in Poland. There were some differences between them, but in both cases pole−sized and mature stands were more abundant in food than the younger age classes. Fallow deer food availability was lowest in mature beech stands. Comparisons with other studies on this issue made in Poland showed that results are different depending on deer species considered. It comes from different food eaten by every species and abundance of various plants in forest age classes may follow different patterns. Besides, this study has shown that it is very hard to find general pattern of relation between forest age and deer food abundance for various regions, because this will depend on tree species dominating in the forest as well as forest management practices.
    Źródło:
    Sylwan; 2003, 147, 01; 88-95
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czynniki wplywajace na zroznicowanie zageszczenia populacji borsuka [Meles meles L.] w Polsce
    Autorzy:
    Borowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/818900.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    dostepnosc pokarmu
    preferencje srodowiskowe
    fauna
    Meles meles
    borsuk
    Polska
    lasy
    preferencje pokarmowe
    populacje zwierzat
    lesnictwo
    zageszczenie populacji
    Źródło:
    Sylwan; 2001, 145, 03; 33-42
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czy wielkoobszarowe odnowienia lasu oferują jeleniowatym atrakcyjniejszy pokarm niż las dojrzały: Casus pożarzyska w Rudach Raciborskich
    Do large-scale forest regenerations offer to deer more atractive fodder than mature forest: A case of burnout forest in Rudy Raciborskie
    Autorzy:
    Gmitrzuk, K.
    Obidziński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1016007.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany dojrzale
    dostepnosc pokarmu
    pozarzyska
    jeleniowate
    zwierzeta lowne
    lowiectwo
    odnowienia lasu
    baza pokarmowa
    lesnictwo
    ungulates
    food availability
    post−fire regeneration
    Opis:
    Impact of ungulates on forest communities is determined by food availability and structure of the community. Both food and structure are formed among others by large disturbances i.e. wildfires. The biggest wildfire in Poland occurred in August 1992 in Rudy Raciborskie forest district. The study on food availability on burnt area was carried out in July and August 2004. Phytosociological releves were made on 100 plots on burnt area and 100 in unburnt forest. Comparisons were made between burnt and unburnt area, between burnt and unburnt area in dominating forest types, and on burnt area between areas with natural regeneration and reforested and between areas covered with pine and birch stands. Availability of food is better in unburnt forest than on burnt area and in self−regenerated than in reforested stands. Food availability can not substantiate the view of greater ungulates impact on burnt area.
    Źródło:
    Sylwan; 2007, 151, 04; 36-43
    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
      Wyświetlanie 1-4 z 4

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