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    Wyświetlanie 1-4 z 4
    Tytuł:
    Threatened lichens of Lower Silesia, Poland
    Autorzy:
    Kossowska, M
    Fabiszewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/58203.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Polska
    threatened lichen
    red list
    lichen
    Lower Silesian region
    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.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2004, 73, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Unclear origin of the new locality of Chamaecytisus albus Rothm. [Hacq.] in Poland: a case study
    Autorzy:
    Przemyski, A
    Piwowarski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/58651.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Polska
    rare species
    red book
    xerothermic grassland
    Chamaecytisus albus
    new station
    European red list
    Opis:
    Chamaecytisus albus (Hacq.) Rothm. is an extremely rare species, which is inserted in many European red lists and red books. Its continuous range covers the south-eastern part of Europe. That species grows in intensely insolated and calcareous habitats of xerothermic grasslands. Only one station of White Broom had been known in the valley of the Bug river, near Hrubieszów, but in 2007 a new one was discovered near Jędrzejów. That station is located the farthest in the north and the west in Europe and it is completely detached from the continuous range.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2009, 78, 3; 235-239
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Trapetum natantis Muller et Gors 1960 in hydromeliorative facilities in Serbia
    Autorzy:
    Dzigurski, D.
    Ljevnaic-Masic, B.
    Nikolic, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/59034.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Trapetum natantis association
    Trapa natans
    hydrophyte
    red list
    endangered species
    water property
    Serbia
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2013, 82, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Demographic responses of boreal-montane orchid Malaxis monophyllos (L.) Sw. populations to contrasting environmental conditions
    Autorzy:
    Jermakowicz, E.
    Brzosko, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/58627.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    demographic response
    orchid
    white adder's mouth
    Malaxis monophyllos
    plant population
    environment condition
    population dynamics
    red list
    plant species
    anthropogenic habitat
    Opis:
    In an age of changes in species’ geographical ranges, compounded by climatic and anthropogenic impacts, it become important to know which processes and factors influence plant populations and their persistence in the long term. Here we investigated dynamic and fitness components in twelve populations of Malaxis monophyllos (L.) Sw., situated in different geographical (regions) and ecological (type of habitat) units. Although M. monophyllos is a rare species, characterized by highly fragmented, boreal-montane distribution range, in last few decades it successfully colonized secondary habitats in Polish uplands. Our results indicate that M. monophyllos is represented mainly by small populations, which annual spatial and temporal changes might be very high, what affects the ephemeral character of these populations, regardless of the region and type of habitat. This dynamic structure, in turn, is caused by intensive exchange of individuals in populations, as well as by their short above-ground life span. Despite the large range of variation in size and reproductive traits, we can distinguish some regional patterns, which indicate boreal region as the most optimal for M. monophyllos growth and persistence in the long term, and with montane and upland/anthropogenic populations, due to lower reproductive parameters, as the most threatened. Although it should be considered that anthropogenic populations, despite their lower reproductive parameters and instability in the long term, present an intermediate, geographical and ecological character, therefore they may be valuable in shaping, both M. monophyllos’ future range, as well as its potential for response on ongoing and future changes. In general, reproduction is the main factor differentiating of M. monophyllos populations in regions, and we can suspect that it may become the cause of the future differentiation and isolation of these populations, occurring with progressive range fragmentation.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2016, 85, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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