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    Wyświetlanie 1-7 z 7
    Tytuł:
    Coleanthus subtilis [Tratt.] Seidel - a new species to the Polish vascular flora
    Autorzy:
    Fabiszewski, J
    Cebrat, J.
    Tematy:
    Veronica peregrina
    Coleanthus subtilis
    Polska
    vascular flora
    protection
    Myosurus minimus
    Olesnica Plateau
    new species
    Limosella aquatica
    Pokaż więcej
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Powiązania:
    https://bibliotekanauki.pl/articles/57030.pdf  Link otwiera się w nowym oknie
    Opis:
    The authors describe the locality of a so far in Poland unknown species Coleanthus subtilis. It was discovered on the Oleśnica Plateau near Wroclaw. This grass occurs on a surface of ca. 15 ha, round muddy shores of fishponds. The large stand makes the impression to be at least 50-year old. Together with the grass of our interest there grow also other, not frequent to day, species like Veronica peregrina, Myosurus minimus and Limosella aquatica. The traditional management of fishponds makes the basis of maintenance of all the species and the whole community. The constant filling with water of the reservoirs and application of fertilisers threatens the existence of the whole rare and interesting ecosystem.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Plants accumulating heavy metals in the Sudety Mts
    Autorzy:
    Brej, T
    Fabiszewski, J.
    Tematy:
    plant
    heavy metal accumulation
    Sudetes Mountains
    Thlaspi caerulescens
    Arabidopsis halleri
    Armeria maritima ssp.halleri
    zinc
    nickel
    lead
    copper
    cadmium
    Pokaż więcej
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Powiązania:
    https://bibliotekanauki.pl/articles/57670.pdf  Link otwiera się w nowym oknie
    Opis:
    The Sudeten flora consists of some plants we can recognize as heavy metal accumulators. Between others there are: Thlaspi caerulescens, Arabidopsis halleri, Armeria maritima ssp. halleri s.l. and probably the endemic fern Asplenium onopteris var. silesiaca. The authors present the concentrations of some important heavy metals measured in aboveground plant dry weight. The highest concentration of zinc was 8220 ppm (Thlaspi), nickel - 3100 ppm (Thlaspi), lead - 83 ppm (Armeria), copper - 611 ppm (Arabidopsis) and cadmium - 28 ppm (Thlaspi). The concentrations depend rather on species or population specification than on ore deposit quality. There are no typical hyperaccumulator among plants we have examined, but some signs of hyperaccumulation of nickel, zinc and lead could be observed. There are no typical endemic taxa, only Asplenium onopteris var. silesiaca and Armeria maritima ssp. halleri may be recognized as neoendemic taxa, but still of unclear systematic position. During the study we tried to find out why some Sudeten vascular plants do not develop heavy metals hyperaccumulation and why they are rather latent hyperaccumulators. Finally, we suggest to protect some metallicolous areas in spite they are rather territories with low plant biodiversity.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Threatened lichens of Lower Silesia, Poland
    Autorzy:
    Kossowska, M
    Fabiszewski, J.
    Tematy:
    Polska
    threatened lichen
    red list
    lichen
    Lower Silesian region
    Pokaż więcej
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Powiązania:
    https://bibliotekanauki.pl/articles/58203.pdf  Link otwiera się w nowym oknie
    Opis:
    A preliminary red list of threatened lichens of Lower Silesia (SW Poland) is presented. Species have been valuated according to the Red Data Book Categories (IUCN). The list comprises 602 taxa (ca. 60% of the whole lichen flora of Lower Silesia). 52 species are considered as rare (category R), 84 - as vulnerable (V), and 63 species - as endangered (E). The Silesian lichen flora is characterized by great numbers of taxa with extinct (Ex -140 taxa), and indeterminate (I - 263 taxa) categories.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ecological significance of some kenophytes in Lower Silesian national parks
    Autorzy:
    Fabiszewski, J
    Brej, T.
    Tematy:
    Impatiens glandulifera
    plant ecology
    biological invasion
    Lower Silesian national park
    invasiveness
    environmental problem
    non-native species
    Reynoutria japonica
    national park
    botany
    invasive species
    habitat preference
    Sudetes Mountains
    Pokaż więcej
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Powiązania:
    https://bibliotekanauki.pl/articles/58362.pdf  Link otwiera się w nowym oknie
    Opis:
    The paper presents the results of several years investigations (2003-2007) on two invaders: the Himalayans Impatiens glandulifera and Asiatic Reynoutria japonica. The Sudety Mountains and their national parks are under strong pressure of both species, threatening the local vegetation. The four-year investigations have been carried out in field, glasshouse and in laboratory. Invasive species have their peculiar life histories which help them to occupy new areas. Those are above all the specific generative reproduction strategies (Impatiens) or vegetative reproduction strategies (Reynoutria). Both strategies secure the reproductive success and to capture more and more highly situated areas of the mountains. Very significant characteristics connected with the expansion of invaders is the excessively over and above the average production of seeds (Impatiens) and a huge annual increment aboveground biomass (Reynoutria). The investigated invasive species are probably not equipped with influence of allelopatic type as of greater importance is their competitive strength. The invaders can eliminate a part of the early spring flora belonging to the geophyte group and impoverish the regional biological diversity. Both the invasive plants enter also into some moist mountain forest communities.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ecological indicator values of some lichen species noted in Poland
    Autorzy:
    Fabiszewski, J.
    Szczepanska, K.
    Tematy:
    ecological indicator value
    lichen species
    Polska
    species list
    Pokaż więcej
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Powiązania:
    https://bibliotekanauki.pl/articles/56816.pdf  Link otwiera się w nowym oknie
    Opis:
    The paper presents the ecological indicator values for 360 lichen species noted in Poland. For the given species estimated were the climatic indicators (light, temperature, moisture) and the edaphic ones (trophicity, habitat acidity). The estimate is based mainly on field studies and Polish lichenological literature. Presented are also the dynamics tendencies, i.e expansion or dieback of the analyzed species. According to papers by Polish authors, concerning various groups of plants, used were five degrees' scales of the analysed indices.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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