Publications des scientifiques de l'IRD

Pommier T., Merroune A., Bettarel Yvan, Got P., Janeau Jean-Louis, Jouquet Pascal, Thyu D. Thu, Tran D. Toan, Rochelle Newall Emma. (2014). Off-site impacts of agricultural composting : role of terrestrially derived organic matter in structuring aquatic microbial communities and their metabolic potential. Fems Microbiology Ecology, 90 (3), p. 622-632. ISSN 0168-6496.

Titre du document
Off-site impacts of agricultural composting : role of terrestrially derived organic matter in structuring aquatic microbial communities and their metabolic potential
Année de publication
2014
Type de document
Article
Auteurs
Pommier T., Merroune A., Bettarel Yvan, Got P., Janeau Jean-Louis, Jouquet Pascal, Thyu D. Thu, Tran D. Toan, Rochelle Newall Emma
Source
Fems Microbiology Ecology, 2014, 90 (3), p. 622-632 ISSN 0168-6496
While considered as sustainable and low-cost agricultural amendments, the impacts of organic fertilizers on downstream aquatic microbial communities remain poorly documented. We investigated the quantity and quality of the dissolved organic matter leaching from agricultural soil amended with compost, vermicompost or biochar and assessed their effects on lake microbial communities, in terms of viral and bacterial abundances, community structure and metabolic potential. The addition of compost and vermicompost significantly increased the amount of dissolved organic carbon in the leachate compared with soil alone. Leachates from these additions, either with or without biochar, were highly bioavailable to aquatic microbial communities, although reducing the metabolic potential of the community and harbouring more specific communities. Although not affecting bacterial richness or taxonomic distributions, the specific addition of biochar affected the original lake bacterial communities, resulting in a strongly different community. This could be partly explained by viral burst and converging bacterial abundances throughout the samples. These results underline the necessity to include off-site impacts of agricultural amendments when considering their cascading effect on downstream aquatic ecosystems.
Plan de classement
Milieux physico-chimique [032MILPHY] ; Pédologie appliquée [068PEDAPP]
Descripteurs
SOL CULTIVE ; COMPOST ; CONSEQUENCE ECOLOGIQUE ; EROSION HYDRIQUE ; LESSIVAGE ; MATIERE ORGANIQUE DISSOUTE ; CARBONE ORGANIQUE ; LAC ; MICROORGANISME ; VIRUS ; BACTERIE ; ABONDANCE ; DIVERSITE SPECIFIQUE ; STRUCTURE DE POPULATION ; METABOLISME ; VERMICOMPOST ; BIOCHAR
Description Géographique
ZONE TROPICALE ; VIET NAM
Localisation
Fonds IRD [F B010063307]
Identifiant IRD
fdi:010063307
Contact