Plant diversity enhances production and downward transport of biodegradable dissolved organic matter
Autor: | Janneke Ravenek, Christine Fischer-Bedtke, Gerd Gleixner, Odette González Macé, Tanja Strecker, Cameron Wagg, Christiane Roscher, Liesje Mommer, Vanessa-Nina Roth, Alexandru Milcu, Bernhard Schmid, Thorsten Dittmar, Stefan Scheu, Alexandra Weigelt, Nico Eisenhauer, Anke Hildebrandt, Natalie J. Oram, Markus Lange |
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Přispěvatelé: | Max Planck Institute for Biogeochemistry (MPI-BGC), Max-Planck-Gesellschaft, Thüringer Landesamt für Umwelt und Geologie, German Centre for Integrative Biodiversity Research (iDiv), Leipzig University, Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research (UFZ), Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), Carl Von Ossietzky Universität Oldenburg = Carl von Ossietzky University of Oldenburg (OFFIS), Friedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany], Johann-Friedrich Blumenbach Institut für Zoologie und Anthropologie, Georg-August-University = Georg-August-Universität Göttingen, Écotron Européen de Montpellier, Centre National de la Recherche Scientifique (CNRS), Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Nature Conservation and Plant Ecology Group, Wageningen University and Research [Wageningen] (WUR), Soil Biology Group, Institute for Water and Wetland Research, Radboud University Nijmegen, Universität Zürich [Zürich] = University of Zurich (UZH), Department of Systematic Botany and Functional Biodiversity, Universität Leipzig, University of Zurich, Vries, Franciska, Lange, Markus, Université Paul-Valéry - Montpellier 3 (UPVM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
Evolution ecosystem functions and services Plant Ecology and Nature Conservation plant–soil interactions Plant Science 010603 evolutionary biology 01 natural sciences bioDiversity Subsoil Behavior and Systematics vegetation 1110 Plant Science subsoil Dissolved organic carbon Ecosystem Plant–soil interactions 910 Geography & travel ComputingMilieux_MISCELLANEOUS Ecology Evolution Behavior and Systematics biodiversity 2. Zero hunger Ecosystem functions and services Topsoil Decomposition decomposition Vegetation Ecology Soil organic matter Plant Ecology food and beverages Plant community 15. Life on land PE&RC dissolved organic carbon 10122 Institute of Geography 1105 Ecology Evolution Behavior and Systematics Environmental chemistry Soil water Plantenecologie en Natuurbeheer Soil horizon Environmental science Soil fertility [SDE.BE]Environmental Sciences/Biodiversity and Ecology 2303 Ecology human activities 010606 plant biology & botany |
Zdroj: | Journal of Ecology Journal of Ecology, 2020, ⟨10.1111/1365-2745.13556⟩ EPIC3Journal of Ecology, WILEY-BLACKWELL PUBLISHING, ISSN: 0022-0477 Journal of Ecology 109 (2021) 3 Journal of Ecology, 109(3), 1284-1297 Journal of Ecology, Wiley, 2020, ⟨10.1111/1365-2745.13556⟩ |
ISSN: | 0022-0477 1365-2745 |
Popis: | International audience; Plant diversity is an important driver of below-ground ecosystem functions, such as root growth, soil organic matter (SOM) storage and microbial metabolism, mainly by influencing the interactions between plant roots and soil. Dissolved organic matter (DOM), as the most mobile form of SOM, plays a crucial role for a multitude of soil processes that are central for ecosystem functioning. Thus, DOM is likely to be an important mediator of plant diversity effects on soil processes. However, the relationships between plant diversity and DOM have not been studied so far.2. We investigated the mechanisms underlying plant diversity effects on concentrations of DOM using continuous soil water sampling across 6 years and 62 plant communities in a long-term grassland biodiversity experiment in Jena, Germany. Furthermore, we investigated plant diversity effects on the molecular properties of DOM in a subset of the samples.3. Although DOM concentrations were highly variable over the course of the year with highest concentrations in summer and autumn, we found that DOM concentrations consistently increased with plant diversity across seasons. The positive plant diversity effect on DOM concentrations was mainly mediated by increased microbial activity and newly sequestered carbon in topsoil. However, the effect of soil microbial activity on DOM concentrations differed between seasons, indicating DOM consumption in winter and spring, and DOM production in summer and autumn. Furthermore, we found increased contents of small and easily decomposable DOM molecules reaching deeper soil layers with high plant diversity.4. Synthesis. Our findings suggest that plant diversity enhances the continuous downward transport of DOM in multiple ways. On the one hand, higher plant diversity results in higher DOM concentrations, on the other hand, this DOM is less degraded. This study indicates, for the first time, that higher plant diversity enhances the downward transport of dissolved molecules that likely stimulate soil development in deeper layers and therefore increase soil fertility. |
Databáze: | OpenAIRE |
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