TAILIEUCHUNG - Báo cáo lâm nghiệp: "Soil detritivore macro-invertebrate assemblages throughout a managed beech rotation"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Soil detritivore macro-invertebrate assemblages throughout a managed beech rotation. | Ann. For. Sci. 64 2007 219-228 INRA EDP Sciences 2007 DOI forest 2006106 219 Original article Soil detritivore macro-invertebrate assemblages throughout a managed beech rotation Mickael HEDDE Michael Aubert Fabrice Bureau Pierre Margerie Thibaud Decaens Université de Rouen Laboratoire d Ecologie ECODIV UPRES-EA 1293 UFR Sciences et Techniques 76821 Mont Saint Aignan Cedex France Received 28 March 2006 accepted 28 September 2006 Abstract - This work addresses the driving factors responsible for patterns in the detritivore macrofaunal communities of a managed beechwood chronosequence 28 to 197 years old Normandy France . We investigated the variation patterns of density biomass and diversities of detritivore macrofauna throughout this rotation. Multivariate analyses were carried out to identify the main covariation patterns between species and some properties of their physical environment and to describe the main ecological gradients constraining the macro-invertebrate community assembly. A total of 6 earthworm 6 woodlouse and 7 millipede species were found in the whole data set. Density biomass and diversity were profoundly influenced by forest ageing mainly because of variation in humic epipedon spatial variability. Three groups of species were identified according to their environmental requirements. Some hypotheses regarding the external related to management practices or internal related to inter-specific interactions assembly rules behind species assemblages are proposed an approach which has rarely been used in soil ecology. Finally the impact of forestry practices on soil functioning through their impact on detritivore macro-invertebrate communities is discussed. soil detritivore macrofauna community ecology assembly rules humic epipedon forest management Résumé - Les assemblages de macro-invertébrés détritivores du sol d une rotation de futaie de hêtre. Ce travail a pour but d identifier les facteurs responsables des schémas de variation des .

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