Ambient and substrate energy influence decomposer diversity differentially across trophic levels
2023
Kriegel, Peter | Vogel, Sebastian | Angeleri, Romain | Baldrian, Petr | Borken, Werner | Bouget, Christophe | Feldmann, Benedikt | Hagge, Jonas | Brin, Antoine | Bussler, Heinz | Cocciufa, Cristiana | Gossner, Martin | Haeler, Elena | Hardersen, Sönke | Hartmann, Henrik | Hjältén, Joakim | Kotowska, Martyna | Lachat, Thibault | Larrieu, Laurent | Pelz, Stefan | Leverkus, Alexandro | Macagno, Anna | Mitesser, Oliver | Müller, Jörg | Schuldt, Bernhard | Obermaier, Elisabeth | Parisi, Francesco | Seibold, Sebastian | Stengel, Elisa | Sverdrup-Thygeson, Anne | Weisser, Wolfgang | Thorn, Simon | Julius-Maximilians-Universität Würzburg = University of Würzburg [Würsburg, Germany] (JMU) | Bern University of Applied Sciences (BFH) | Institute of Microbiology of the Czech Academy of Sciences [Prague, Czech Republic] (MBU / CAS) ; Czech Academy of Sciences [Prague] (CAS) | Universität Bayreuth [Deutschland] = University of Bayreuth [Germany] = Université de Bayreuth [Allemagne] | Ecosystèmes forestiers (UR EFNO) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Chercheur indépendant | Bavarian Forest National Park | Technische Universität Munchen - Technical University Munich - Université Technique de Munich (TUM) | Dynamiques et écologie des paysages agriforestiers (DYNAFOR) ; École nationale supérieure agronomique de Toulouse (ENSAT) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Ecole d'Ingénieurs de Purpan (INP - PURPAN) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Ecole d'Ingénieurs de Purpan (INP - PURPAN) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT)-Université de Toulouse (UT) | Arma dei Carabinieri Caserma Palidoro | Swiss Federal Institute for Forest, Snow and Landscape Research WSL | Institute of Terrestrial Ecosystems (ITES) ; Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich) | Centro Nazionale per lo Studio e la Conservazione della Biodiversità Forestale “Bosco Fontana” | Max Planck Institute for Biogeochemistry (MPI-BGC) ; Max-Planck-Gesellschaft | Department of Wildlife, Fish and Environmental Studies ; Swedish University of Agricultural Sciences = Sveriges lantbruksuniversitet (SLU) | Georg-August-University of Göttingen = Georg-August-Universität Göttingen | Centre National de la Propriété Forestière (CNPF-IDF) | University of Applied Forest Sciences ; University of Applied Forest Sciences | Universidad de Granada = University of Granada (UGR) | Indiana University [Bloomington] ; Indiana University System | Technical University of Dresden, Dresden, Germany | Università degli Studi del Molise = University of Molise (UNIMOL) | Norwegian University of Life Sciences (NMBU) | Czech Academy of Sciences [Prague] (CAS) | Bauer-und Stemmler Stiftung; Czech Science Foundation, Grant/Award Number: 22-27166S; DeutscheBundesstiftung Umwelt, Grant/Award Number: 20016/466; Deutsche Forschungsgemeinschaft, Grant/Award Number: TH 2218/5-1
International audience
Afficher plus [+] Moins [-]anglais. The species-energy hypothesis predicts increasing biodiversity with increasing energy in ecosystems. Proxies for energy availability are often grouped into ambient energy (i.e., solar radiation) and substrate energy (i.e., non-structural carbohydrates or nutritional content). The relative importance of substrate energy is thought to decrease with increasing trophic level from primary consumers to predators, with reciprocal effects of ambient energy. Yet, empirical tests are lacking. We compiled data on 332,557 deadwood-inhabiting beetles of 901 species reared from wood of 49 tree species across Europe. Using host-phylogeny-controlled models, we show that the relative importance of substrate energy versus ambient energy decreases with increasing trophic levels: the diversity of zoophagous and mycetophagous beetles was determined by ambient energy, while non-structural carbohydrate content in woody tissues determined that of xylophagous beetles. Our study thus overall supports the species-energy hypothesis and specifies that the relative importance of ambient temperature increases with increasing trophic level with opposite effects for substrate energy.
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