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Soil properties, grassland management, and landscape diversity drive the assembly of earthworm communities in temperate grasslands

引用

Pedosphere 2021年第3期31卷 375-383页

作者： Kevin HOEFFNER Mathieu SANTONJA CécileMONARD lou barbe Mathilde LEMOING Daniel CLUZEAU University of Rennes CNRSECOBIO UMR 6553Rennes F-35000France INRAE AGROCAMPUS OUEST UMR SASRennes F-35000France Aix Marseille Université Avignon UniversitéCNRSIRDIMBEMarseille F-13397France

Earthworms are widespread soil organisms that contribute to a wide range of ecosystem *** such,it is important to improve our knowledge,still scanty,of the factors that drive the assembly of earthworm *** aim of the present study was to conjointly evaluate the effects on the assembly of earthworm communities of i)soil properties(texture,organic matter content,and pH),ii)grassland management(grassland age,livestock unit,and type of fertilization),iii)landscape diversity(richness,diversity of surrounding habitats,and grassland plant diversity),and iv)presence of *** study was conducted in temperate grasslands of Brittany,*** were sampled in 24 grasslands and,in three of these grasslands,they were sampled near a hedgerow or near a ditch(control without a hedgerow).Soil properties explained the larger portion of the variation in the earthworm community parameters compared to grassland management or landscape *** increase in soil organic matter content and pH were the most favorable factors for earthworm abundance and biomass,in particular for endogeic *** grassland management,the increase in the livestock unit was the most damaging factor for earthworm communities,in particular for the anecic earthworm biomass and endogeic species ***,landscape diversity negatively affected the total earthworm abundance and epigeic earthworm biomass,but it was related to an increase in the epi-anecic *** a finer scale,we also demonstrated that the presence of hedgerows surrounding grasslands enhanced earthworm species richness,especially within the epigeic and anecic ecological *** study highlights that the earthworm ecological categories respond specifically to environmental filters;further studies need to be conducted to elucidate the factors that drive the assembly of earthworm communities at this ecological category *** recommend that policymakers should act on landscape man

关键词： ecological categoryfield marginhedgerowlivestock unitsoil organic mattersoil PHtrampling

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