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Soil properties inside earthworm patches and gaps in a tropical grassland (la Mancha, Veracruz, Mexico)

hal.structure.identifierBiodiversité, Gènes et Ecosystèmes [BioGeCo]
dc.contributor.authorROSSI, Jean-Pierre
hal.structure.identifierUniversité Pierre et Marie Curie - Paris 6 [UPMC]
dc.contributor.authorHUERTA, E.
hal.structure.identifierInstituto de Ecología
dc.contributor.authorFRAGOSO, C.
hal.structure.identifierUniversité Pierre et Marie Curie - Paris 6 [UPMC]
dc.contributor.authorLAVELLE, Patrick
dc.date.issued2006
dc.date.conference2004-08-30
dc.description.abstractEnEarthworms often form spatially structured populations characterised by alternate clusters of either low or high density. This study compared various soil properties and herbaceous plant biomass between areas of high and low earthworm density (i.e. patches and gaps) in a tropical grassland (la Mancha, Veracruz, Mexico). We aimed at identifying those variables that might explain the observed spatial distribution or, conversely be explained by the community pattern. We examined the spatial aggregation by means of the Spatial Analysis by Distance IndicEs (SADIE) system and showed the presence of significant patches and gaps. Only a few variables significantly differed between patches and gaps. Areas corresponding to earthworm patches and gaps had more silt and clay, respectively, in the 10–30 cm soil layer. There was no difference in the C content in the different particle-size classes expressed in absolute values (mg C g−1 soil) but the proportion of C associated to > 200 μm particles was larger in the patches (0–10 cm layer) while there was more C associated to the fine particle (< 50 μm) in the gaps (10–30 cm soil layer). Patches and gaps did not differ significantly in terms of cation concentrations (K, Mg and Ca), pH, soil bulk density or herbaceous plant dry mass. The lack of clear relationships between earthworm distribution and soil parameters in this study suggest that earthworm populations and soil properties may occur at different spatial scales
dc.language.isoen
dc.subjectSOIL ATTRIBUTES
dc.subjectSOIL ORGANIC MATTER
dc.subjectVER DE TERRE
dc.subject.enEARTHWORM
dc.subject.enSPATIAL PATTERN
dc.subject.enSADIE ANALYSIS
dc.subject.enSPATIAL ANALYSIS BY DISTANCE INDICES
dc.title.enSoil properties inside earthworm patches and gaps in a tropical grassland (la Mancha, Veracruz, Mexico)
dc.typeCommunication dans un congrès
dc.identifier.doi10.1016/j.ejsobi.2006.07.024
dc.subject.halSciences du Vivant [q-bio]
bordeaux.countryFR
bordeaux.conference.cityRouen
bordeaux.peerReviewedoui
hal.identifierhal-02824690
hal.version1
hal.invitedoui
hal.conference.end2004-09-03
hal.popularnon
hal.audienceNationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02824690v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.date=2006&amp;rft.au=ROSSI,%20Jean-Pierre&amp;HUERTA,%20E.&amp;FRAGOSO,%20C.&amp;LAVELLE,%20Patrick&amp;rft.genre=unknown


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