Počet záznamů: 1  

The effect of nitrogen addition on biomass production and competition in three expansive tall grasses

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    0380892 - ÚVGZ 2013 RIV GB eng J - Článek v odborném periodiku
    Holub, Petr - Tůma, I. - Fiala, Karel
    The effect of nitrogen addition on biomass production and competition in three expansive tall grasses.
    Environmental Pollution. Roč. 170, NOV 2012 (2012), s. 211-216. ISSN 0269-7491. E-ISSN 1873-6424
    Grant CEP: GA ČR(CZ) GA526/06/0556; GA MZe QJ1220007; GA MŠMT(CZ) ED1.1.00/02.0073
    Institucionální podpora: RVO:67985939 ; RVO:67179843
    Klíčová slova: aboveground biomass * aggressivity * crowding coefficient * Nitrogen * tall grasses
    Kód oboru RIV: EH - Ekologie - společenstva; EF - Botanika (BU-J)
    Impakt faktor: 3.730, rok: 2012

    A large increase of grasses Calamagrostis epigejos, Bromus inermis and Brachypodium pinnatum has often been observed in many regions enriched by higher nitrogen (N) wet deposition inputs. Competitive relationships between these grasses under enhanced N loads have not yet been studied. Therefore an outdoor experiment was established which involved monocultures of Calamagrostis, Bromus and Brachypodium and their 1:1 mixtures in containers under two N treatments, i.e., unfertilized and fertilized (+50 kg N ha−1). In monocultures, the total aboveground biomass of Calamagrostis, Bromus and Brachypodium were 1.1, 3.6 and 2.5 times higher respectively due to enhanced N fertilization. Relative crowding and aggressivity coefficients indicate that Calamagrostis and Bromus dominate when mixed with Brachypodium at both levels of N availability. When mixed with Bromus, Calamagrostis is the poorer competitor at lower N loads, however, it can be dominating in N fertilized treatments.
    Trvalý link: http://hdl.handle.net/11104/0211494

     
     
Počet záznamů: 1  

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