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    Tytuł:
    Synantropizacja flory roślin naczyniowych rezerwatu Wieliszewskie Łęgi (środkowa Polska)
    Synanthropization of vascular plant flora in the Wieliszewskie Legi Nature Reserve (central Poland)
    Autorzy:
    Zaniewski, P.T.
    Dembicz, I.
    Zaniewska, E.
    Kanabus, A.
    Kozub, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2136714.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    rezerwaty przyrody
    rezerwat Wieliszewskie Legi
    flora
    rosliny naczyniowe
    sklad gatunkowy
    synantropizacja
    wskaznik synantropizacji
    apophytization
    kenophytization
    anthropophytization
    disturbance
    embankments
    transformation into oak-hornbeam
    forest
    transformation into alder carr
    Mazovia
    Opis:
    Understanding human influence on vegetation dynamics is important from both conservation and human management perspectives. The Wieliszewskie Łęgi Reserve, located in central Poland, is a young forest area that was cut off from the flood waters of the Narew river in 1963, but since then has been constantly and intensively supplied with water from overflows under the dike. On the southern side, adjacent to the reserve, there are patches of valuable meadows, rushes and scrub communities. The aim of this study was to determine the degree of synanthropization of the flora in the Wieliszewskie Łęgi reserve and to assess changes occurring in its vegetation. The vascular plant flora of the reserve and its southern vicinity was surveyed in 2017 and the plant communities within the study area were mapped. In the area of the reserve, we observed a total of 264 vascular plant species, whereas for the entire area under study, 314 spe- cies were recorded. Of these, 14 were classified as valuable. The high species richness was mainly due to the presence of a large number of apophytes – native species quickly colonizing sites transformed by man. Therefore the degree of naturalness of the reserve's flora was relatively low, which is most likely due to the lack of refugia for typical forest species. A number of plant communities of non-forest, scrub and forest character, typical for swampy, wet, semixeric as well as dry habitats were recorded. Succession, manifested by the disappearance of non-forest and scrub communities and progression of forest communities, is superimposed on the processes of transformation into semixeric oak-hornbeam communities in the highest areas and carr com- munities in the lowest areas. A low proportion of kenophytes (16 species) and a zero value of the index of fluctuation changes indicate a relative resistance of the reserve to invasion by alien species.
    Źródło:
    Leśne Prace Badawcze; 2021, 82, 2; 47-66
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ogniska sukcesji dla przywracania odpowiedniego składu gatunkowego drzew w lesie objętym ochroną
    Applied nucleation in the restoration of a suitable tree species composition in a protected forest
    Autorzy:
    Kanabus, A.
    Miścicki, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/979252.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    post−managed stand
    regeneration
    urgency of stand rebuildin
    Stołowe Mountains National Park
    Opis:
    Applied nucleation is one of silvicultural measures used in the afforestation of new areas and reclamation or rebuilding of the forest species composition. It involves sawing or planting small patches of trees, or nuclei as focal areas for succession, which spread out into the environment as soon as they produce seeds. The aim of the study was to create a plan of planted nuclei that facilitate, in the long term, the enrichment of the species composition and gradual reconstruction of forests in the Stołowe Mountains National Park (PNGS), south−western Poland. The plan was assumed to comprise the locations of nuclei with an indication of tree species designated for planting in a given nucleus. Stand descriptions and maps from 2014 were used to determine: (1) the expected proportion (tab. 1) as well as the need to change of the proportion of individual tree species (tab. 3), (2) the urgency of actions to be taken due to the difference between the desired and actual proportion of a given tree species in individual stands (tab. 2), (3) the proportion of nuclei with a given tree species (tab. 3) and (4) the location of nuclei (200 in total) taking into consideration the local needs to increase the proportion of a given species. To determine the proportion (and then the number) of nuclei with a given tree species we took into account: (1) the difference between the present and desired proportion of a given species (considering the most numerous one), (2) the frequency of species as desired admixture or co−dominant species, and (3) the occurrence of species in rare but important habitats, e.g. along streams or ravines (tab. 3). A map of the distribution of stands where introduction of a given tree species is desirable, including information on the urgency of this treatment was prepared (fig. 1). The PNGS forest area was divided into patches using polygons of different shape and area. The boundaries of the polygons were drawn separately for each tree species in such a way that the number of patches was equal to the number of nuclei designed for planting, and the number of stands in the two highest planting urgency classes within each of these patches was equal. One nucleus of a given tree species was planned to be established within a patch. Only proportion of European beech, silver fir and wych elm was lower than desired (tab. 3). Such an assessment did not reflect the scarcity of species in individual stands. In more than thousand cases, the urgency of introduction of a given species was very high (tab. 4). It was essential to establish some nuclei in a significant part of the PNGS forests (fig. 2).
    Źródło:
    Sylwan; 2020, 164, 10; 831-841
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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