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    Tytuł:
    Wpływ działalności bobra europejskiego (Castor fiber) w ekosystemach Bieszczadzkiego i Magurskiego Parku Narodowego na zgrupowania drobnych ssaków
    Impact of the European beaver (Castor fiber) activity on communities of small mammals in the ecosystems of Bieszczadzki and Magurski National Parks
    Autorzy:
    Mróz, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/989822.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Bieszczadzki Park Narodowy
    Magurski Park Narodowy
    fauna
    bobr europejski
    Castor fiber
    oddzialywanie na ekosystemy
    przeksztalcenia siedlisk
    zgrupowania zwierzat
    drobne ssaki
    gryzonie
    Rodentia
    ryjowkoksztaltne
    Soricomorpha
    sklad gatunkowy
    roznorodnosc gatunkowa
    liczebnosc
    ecosystem engineer
    rodentia
    soricomorpha
    species diversity
    community composition
    Opis:
    Beavers activity i.e. dam building, burrows and canals digging and foraging, radically changes the environment at both abiotic and biotic level. The consequences of beavers activity for other organisms are visible mainly through changes in their habitats. Such changes influence the number, species composition and species diversity of numerous flora and fauna species. One group of species that also may be influenced by beavers activity are small mammals (Rodentia and Soricimorpha). In Bieszczadzki and Magurski National Parks (southern Poland), small mammals community has not been studied at beaver sites yet. The aim of this study was to determine species composition, species diversity, and the relative abundance of small mammals at beaver sites, comparing to sections of the stream not inhabited by beavers (control sites). Small mammals were captured in three types of habitats – meadow, forest and riparian woodlots. Transects with live−traps were set there within beaver and control sites. Captures were conducted from one to three times annually, during 2−3 consecutive years. Total trapping effort amounted to 2540 trapdays. It was found that species composition, species diversity, and also the relative abundance of small mammals did not differ significantly between beaver and control sites. Only M. agrestis had significantly higher share in the community at the beaver sites. In mountain conditions, the presence of beaver sites probably does not affect the communities and abundance of small mammals significantly.
    Źródło:
    Sylwan; 2015, 159, 06; 498-504
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przewidywane oddziaływanie zmian klimatu na ekosystemy leśne oraz ich konsekwencje w urządzaniu lasu
    Expected impact of climate change on forest ecosystems and its consequences in forest management planning
    Autorzy:
    Borecki, T.
    Orzechowski, M.
    Stępień, E.
    Wójcik, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/987172.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ekosystemy lesne
    urzadzanie lasu
    czynniki klimatyczne
    oddzialywanie na las
    zmiany klimatyczne
    prognozowanie zagrozen
    wydzielanie sie drzew
    plan ciec
    climate change
    forest ecosystems response
    forest management planning
    Opis:
    The paper presents the assessment of possible impact of climate change on forest ecosystems in Poland and its consequences in the forest management planning. Scenarios of climate change in the twenty first century do not allow unambiguous determination of the rate and direction of these changes. However, it is believed that climate change could have negative economic con− sequences, which directly or indirectly will affect the deterioration of the environment. Analysis of the possible forms of the impact of climate change on forest ecosystems is particularly relevant in terms of growth conditions. The most noticeable consequences of the changes will concern the threat to the stability of forest stands resulting from the increase in the intensity of trees dieback caused by different factors. The phenomenon results, among others, from: the occurrence of new threats from biotic factors, including caused by secondary pests and the occurrence of alien species of flora and fauna, the severity of the impact of abiotic factors and the deterioration of health (especially of conifers). The increase in the intensity of the evolution of trees is directly related to the size of the cuts contingent and will lead to a blurring of the boundary between thinning and health−cutting. It is expected that the planned size of the cuts will be implemented mainly in the thinning and accidental cuts. This requires the modification of the perception of the rela− tionship of each category cuts. We propose the order and urgency in the planning of forest use. May be supposed that the role of the clearcutting system will be limited, with the exception of some forest complexes of predominantly productive functions, dominated by poor coniferous habitats. It is recommended to use the natural regeneration in the forest management. Lack of clear boundary between thinning and final cutting will require flexibility in the accounting for the total size of cuts. The consequences of climate change will probably occur in the long term perspective. It can therefore be assumed that reasonably forest management can help to reduce their negative effects. This requires pre−emptive decisions in forest management planning and verification for silviculture, production and protection targets, and their consistent implemen− tation.
    Źródło:
    Sylwan; 2017, 161, 07; 531-538
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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