Podrobnosti záznamu

Název
    Environmental factors influenting species composition of acidophilous grasslands patches in agricultural landscape
Autor
    Halas, Petr
Jazyk
    anglicky
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    Moravian Geographical Reports
Svazek/č.
    Roč. 20, č. 1
Strany
    s. 16-27
Rok
    2012
Poznámky
    Autoři celkem: 1
    Rozsah: 12 s. : www
Předmětová kategorie
    acidophilous grasslands
    hemeroby
    patch area
    patch isolation
    regression trees
Klíčové slovo
    Acidophilous
    Agricultural
    Composition
    Environmental
    Factors
    Grasslands
    Influenting
    Landscape
    Patches
    Species
Abstrakt (anglicky)
   Acidophilous grasslands in the south-western part of the Czech-Moravian Highlands were substantially reduced in the 20th century. This paper addresses these patches in terms of the impact of their size on the species composition, isolation and the quality of the surrounding land cover. Species recorded in the acidophilous grasslands are categorized by hemeroby, life strategy, origin, and life form. Multivariate gradient analysis revealed that of the local variables considered, the greatest parts in the variability of species data were played by soil pH and shape of the patch; some species groups were also substantially influenced by the micro-relief. The importance of the surrounding land cover for the species composition was studied by means of regression trees. A presumption that, apart from local factors such as soil pH and micro-relief, the species composition is significantly influenced by the heterogeneity of the surrounding landscape was confirmed.
Přispěvatel
    AV ČR Brno, Ústav geoniky
Kód přispěvatele
    AV ČR, ÚG
Zdrojový formát
    U
Datum importu
    20. 3. 2014