Age matters: Fate of soil organic matter during ageing of earthworm casts produced by the anecic earthworm Amynthas khami
| Autor: | T.M. Tran, Cornelia Rumpel, François Baudin, Martin Kaupenjohann, Nicolas Bottinelli, Pascal Jouquet, Laure Soucémarianadin, M. Märten |
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| Přispěvatelé: | Soils and Fertilizers Research Institute (SFRI), Vietnam Academy of Agricultural Sciences (VAAS), Institut d'écologie et des sciences de l'environnement de Paris (iEES Paris ), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Technical University of Berlin / Technische Universität Berlin (TU), Laboratoire de géologie de l'ENS (LGENS), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Institut des Sciences de la Terre de Paris (iSTeP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Technische Universität Berlin (TU), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Total organic carbon
chemistry.chemical_classification Biogeochemical cycle biology Soil organic matter Earthworm Amynthas Soil Science [SDU.STU]Sciences of the Universe [physics]/Earth Sciences 04 agricultural and veterinary sciences 15. Life on land biology.organism_classification Microbiology chemistry Environmental chemistry 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Organic matter Composition (visual arts) Chemical composition ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Soil Biology and Biochemistry Soil Biology and Biochemistry, 2020, 148, ⟨10.1016/j.soilbio.2020.107906⟩ Soil Biology and Biochemistry, Elsevier, 2020, 148, ⟨10.1016/j.soilbio.2020.107906⟩ |
| ISSN: | 0038-0717 |
| Popis: | The transformation of organic matter (OM) occluded in earthworm casts during the casts' lifetime may affect its composition and accumulation in stabilised OM pools. We collected casts produced by the anecic earthworm Amynthas khami in a tropical woodland of Northern Vietnam presenting different degradation stages. The aim of this study was to assess (1) the biogeochemical properties of OM in earthworm casts compared to control aggregates from the surrounding soil, and (2) the fate of occluded OM during cast ageing. We analysed intact casts and their density fractions at five ageing stages for organic carbon (OC) and nitrogen (N) content, OM chemical composition by analytical pyrolysis, and OM stability by Rock-Eval thermal analysis. Compared to control aggregates, fresh casts had higher OC values (5.3 vs. 2.6%) and increased OC in all density fractions. Cast OM had more lignin (1.1 vs. |
| Databáze: | OpenAIRE |
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