Počet záznamů: 1

Interactions of the hemiparasitic species .i.Rhinanthus minor./i. with its host plant community at two nutrient levels

  1. 1.
    0351538 - BC-A 2011 RIV CZ eng J - Článek v odborném periodiku
    Mudrák, Ondřej - Lepš, Jan
    Interactions of the hemiparasitic species Rhinanthus minor with its host plant community at two nutrient levels.
    Folia Geobotanica. Roč. 45, č. 4 (2010), s. 407-424 ISSN 1211-9520
    Grant ostatní: GA AV ČR(CZ) IAA601410805
    Výzkumný záměr: CEZ:AV0Z60660521; CEZ:AV0Z50070508
    Klíčová slova: community structure * competition * density dependence
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 1.229, rok: 2010

    For root hemiparasites, host plants are both the source of water and nutrients below-ground, but competitors for light above-ground. Hemiparasites can reduce host biomass, and in this way considerably affect the whole plant community. To investigate these effects, we carried out two experiments in an oligotrophic meadow with a native population of Rhinanthus minor. In the first experiment, removal of R. minor was combined with fertilization in a factorial design, and in the second one, we manipulated R. minor density by thinning. The presence of R. minor decreased the biomass of its host community, mostly by suppressing grasses. In this way, the species was able to counterbalance the effect of fertilization, which increased community biomass and in particular that of grasses. Neither the presence of R. minor nor fertilization affected the total number of species or the Shannon-Wiener diversity index (H’) of the host community.
    Trvalý link: http://hdl.handle.net/11104/0006169