Počet záznamů: 1

Effect of pH on the denitrifying enzyme activity in pasture soils in relation to the intrinsic differences in denitrifier communities

  1. 1.
    0361563 - BC-A 2012 RIV CZ eng J - Článek v odborném periodiku
    Čuhel, Jiří - Šimek, Miloslav
    Effect of pH on the denitrifying enzyme activity in pasture soils in relation to the intrinsic differences in denitrifier communities.
    Folia Microbiologica. Roč. 56, č. 3 (2011), s. 230-235 ISSN 0015-5632
    Grant CEP: GA MŠk LC06066; GA AV ČR IAA600660605
    Výzkumný záměr: CEZ:AV0Z60660521
    Klíčová slova: pH * denitrifying enzyme activity * pasture soils
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 0.677, rok: 2011

    The effects of pH on denitrifying enzyme activity (DEA) and on the ratio of the denitrification products, N2O and N2, were determined in three pasture soils differing in cattle impact. The linkage between intrinsic differences in the denitrifying communities and pH effects on relative N2O production was also assessed. Soil pH values were adjusted just before DEA determination to obtain soil slurries with a range of pH values. The intrinsic differences in the denitrifier communities were assessed by measuring the kinetic constants of NO3- and N2O reductions. DEA for all three soils was highest at pH 8.4, regardless of native soil pH. Because DEA has typically been measured at native soil pH, our results suggest that DEA might have been underestimated in many previous studies.
    Trvalý link: http://hdl.handle.net/11104/0198854