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    Wyświetlanie 1-3 z 3
    Tytuł:
    Dynamika liczebności niedźwiedzia brunatnego w Karpatach Wschodnich
    The peculiarities of bear numbers dynamics in the Eastern Carpatians
    Autorzy:
    Khoyetskyy, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1339921.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    Karpaty Wschodnie
    fauna
    niedzwiedz brunatny
    Ursus arctos
    populacje zwierzat
    liczebnosc
    dynamika populacji
    dynamika liczebnosci
    population dynamics
    poaching
    Opis:
    There have been two periods of change in the dynamics of bear population in the Eastern Carpathians. The first period lasted over 50 years, starting in the late 1940s and ending in the year 2001. The second period started in the early 21st century. The bear population reached its maximum- of about 1100 individuals - in the early 1970s. Over 85% of recorded bear deaths have resulted from poaching.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 2; 111-116
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Występowanie kornika drukarza Ips typographus (L.) (Coleoptera, Curculionidae, Scolytinae) po wiatrołomie z 2013 roku w Dolinie Kościeliskiej w Tatrzańskim Parku Narodowym
    Occurrence of Ips typographus (L.) after wind damage in the Koscieliska Valley of the Tatra National Park
    Autorzy:
    Grodzki, W.
    Gąsienica-Fronek, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1293108.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    parki narodowe
    Tatrzanski Park Narodowy
    Dolina Koscieliska
    drzewostany uszkodzone
    drzewostany swierkowe
    wiatrolomy
    kornik drukarz
    Ips typographus
    wystepowanie
    bark beetles
    Norway spruce
    population dynamics
    damage management
    Opis:
    At the end of 2013, Norway spruce stands in the area of the Tatra National Park were severely damaged by strong storms especially in the Kościeliska Valley region. In the following spring of 2014, a survey recording the occurrence of the spruce bark beetle Ips typographus (Coleoptera, Curculionidae, Scolytinae) was initiated in order to describe the dynamics of beetle reproduction in relation to protection measures executed in wind-damaged stands. Ten research plots with 20 trees each were established in a so-called active protection zone, where the broken and fallen trees had been processed and removed in 2014, and in a passive protection zone, where no actions were taken, and the dynamics of Norway spruce mortality due to bark beetle infestation including quantitative parameters (infestation density, sex ratio of beetle populations) were examined. The entomological analyses were performed on 25×25 cm large bark samples taken from four (active zone) or two (passive zone) tree sections. In the first year of the survey, no infested standing trees were recorded on the plots and the colonisation of fallen and broken trees was very weak. In the second year (2015), infestations appeared in larger numbers on the plots with passive compared to active protection but the infestation density was 0.89 mating chambers per 1 dm2 regardless of the protection status. In the third year (2016), most of the remaining living spruces had been infested with a mean density of 0.82 m.ch. per 1 dm2. In 2015, the proportion of females in the beetle population was 65.8% being higher in the active (68.4%) than the passive (64.0%) protection zone, while in 2016 the proportion was 63.5% and in this case slightly higher in the passive protection zone (63.9% as compared to 63.2%). These results are in accordance with patterns observed in wind-damaged Norway spruce stands of other areas in Poland and Europe and demonstrate the usefulness of forest management procedures in mitigating I. typographus outbreaks.
    Źródło:
    Leśne Prace Badawcze; 2017, 78, 2
    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
      Wyświetlanie 1-3 z 3

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