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    Wyświetlanie 1-3 z 3
    Tytuł:
    Scope and data set of the phytosociological database ‘Grasslands in the Polish Carpathians’
    Autorzy:
    Korzeniak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/58157.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    phytosociological database
    grassland
    Carpathians Mountains
    Polska
    Arrhenatheretalia
    meadow
    Nardus stricta
    sward
    phytosociology
    vegetation
    Opis:
    The phytosociological database as a tool for synthetic and comprehensive study of semi-natural meadows in the Polish part of the Carpathians is presented. It has been developed in the Institute of Nature Conservation of the Polish Academy of Sciences since 2007. All accessible phytosociological relevés were digitalized and stored in a TURBOVEG database. As of January 2013, 4620 relevés have been collected in the database, chiefly from mesic meadows of Arrhenatherion alliance (76%) and mat-grass swards of Nardo-Callunetea class (18%). They were recorded between 1923 and 2012 at an altitude range of 195–2000 m above sea level. For improving territorial coverage of the region by vegetation sampling, since 2009 an extensive field survey has been carried out to collect data from previously unexplored areas and record the actual stage of semi-natural grasslands. As a result 1146 recent unpublished relevés were collected. The statistics of available resources, discussion on the data quality and the application prospects of the database are outlined. The database “Grasslands in the Polish Carpathians” is an intrinsic part of the research on the diversity of vegetation in the Polish Carpathian grasslands, as well as a record of the changes it undergoes.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2013, 82, 3
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Species richness and diversity related to anthropogenic soil disturbance in abandoned meadows in the Bieszczady Mts. [Eastern Carpathians]
    Autorzy:
    Korzeniak, J
    Powiązania:
    https://bibliotekanauki.pl/articles/59114.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    anthropogenic effect
    mountain meadow
    meadow
    Carpathians Mountains
    species richness
    Eastern Carpathians International Biosphere Reserve
    floristic richness
    soil nutrient
    Opis:
    The study was focused on soil factors influencing species richness and diversity after disturbance of the substrate followed by abandonment. Two types of disturbances in the past were considered: the removal of trees and shrubs with the resulting major destruction of soils, and deep ploughing. As a control meadows not covered by any management schemes for 50 years were studied. The topsoil stripping resulted in decrease of potassium, nitrogen and organic carbon contents, while deep ploughing caused less radical effects. Simultaneously, disturbances of the soil delayed the course of succession, and brought increase in species. The most species-rich are ploughed meadows. No differences in terms of species diversity, domination and evenness between the forms of disturbances were identified. However, there were groups of species indicative for soil disturbances. Analysis of the relationships between vegetation differentiation and the properties of soil suggests that available phosphorus may affect species richness and diversity in mountain meadows.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2005, 74, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Formalized hierarchically nested expert system for classification of mesic and wet grasslands in Poland
    Autorzy:
    Kacki, Z.
    Swacha, G.
    Lengyel, A.
    Korzeniak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2130586.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Cocktail method
    vegetation classification
    Molinio-Arrhenatheretea
    syntaxonomy
    diversity
    Braun-Blanquet approach
    Opis:
    The goal of this study was to propose a hierarchically nested classification system comprising four principal levels of the Braun-Blanquet system for Polish grasslands of the class Molinio-Arrhenatheretea. Using the Cocktail method, we defined consistent criteria for delimitation of the class, three orders, nine alliances, and 45 associations. Formal definitions were prepared using the summed cover and presence/absence information of species groups and individual dominant species. We created an expert system with a set of assignment rules that unambiguously classify relevés to a single unit at the given abstraction level of the Braun-Blanquet system in such a way that a relevé matched by the definition of a focal vegetation unit must be matched by definitions of all superior units. Of 11,535 relevés classified to Molinio-Arrhenatheretea, 36% were recognized at the association level, and 57% and 85% at the alliance and order level, respectively. All relevés were assigned unambiguously, meaning that a single relevé could not be assigned to more than one unit within the same hierarchical level (no overlap between vegetation units). This study is the first proposal of a hierarchically nested classification system that classifies grassland vegetation at different syntaxonomical levels unequivocally. It is important to create definitions for different syntaxonomical levels because the majority of vegetation patches do not fit to the associations, but can only be assigned to high-rank units such as alliance, order, or class.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2020, 89, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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