Article (Scientific journals)
Microbial biomass and C and N transformations in forest floors under European beech, sessile oak, Norway spruce and Douglas-fir at four temperate forest sites
Malchair, Sandrine; Carnol, Monique
2009In Soil Biology and Biochemistry, 41, p. 831-839
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Keywords :
Nitrogen mineralization; Nitrification; Soil respiration; Microbial biomass; Tree species; Temperate forest
Abstract :
[en] The purpose of this research was to compare soil chemistry, microbially mediated carbon (C) and nitrogen (N) transformations and microbial biomass in forest floors under European beech (Fagus sylvatica L), sessile oak (Quercus petraea (Mattuschka) Lieblein), Norway spruce (Picea abies (L) Karst) and Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco) at four study sites. We measured soil chemical characteristics, net N mineralization, potential and relative nitrification, basal respiration, microbial and metabolic quotient and microbial biomass C and N under monoculture stands at all sites (one mixed stand). Tree species affected soil chemistry, microbial activities and biomass. but these effects 'varied between sites. Our results indicated that the effect of tree species on net N mineralization was likely to be mediated through their effect on soil microbial biomass, reflecting their influence on organic matter content and carbon availability. Differences in potential nitrification and relative nitrification might be related to the presence of ground vegetation through its influence on soil NH4 and labile C availability. Our findings highlight the need to study the effects of tree species on microbial activities at several sites to elucidate complex N cycle interactions between tree species, ground vegetation, soil characteristics and microbial processes. (C) 2009 Elsevier Ltd. All rights reserved.
Disciplines :
Environmental sciences & ecology
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Malchair, Sandrine ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Ecologie végétale et microbienne
Carnol, Monique  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Ecologie végétale et microbienne
Language :
English
Title :
Microbial biomass and C and N transformations in forest floors under European beech, sessile oak, Norway spruce and Douglas-fir at four temperate forest sites
Publication date :
2009
Journal title :
Soil Biology and Biochemistry
ISSN :
0038-0717
eISSN :
1879-3428
Publisher :
Pergamon Press - An Imprint of Elsevier Science, Oxford, United Kingdom
Volume :
41
Pages :
831-839
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 29 October 2009

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