| Title: | "A mosaic of induced and non-induced branches promotes variation in leaf traits, predation and insect herbivore assemblages in canopy trees" |
| Author(s): | Volf M; Volfova T; Seifert CL; Ludwig A; Engelmann RA; Jorge LR; Richter R; Schedl A; Weinhold A; Wirth C; van Dam NM; |
| Address: | "Institute of Entomology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany. Faculty of Science, University of South Bohemia, Ceske Budejovice, Czech Republic. Faculty of Forest Sciences and Forest Ecology, Department of Forest Nature Conservation, Georg-August-University, Gottingen, Germany. Institute for Biology, University of Leipzig, Leipzig, Germany. Geoinformatics and Remote Sensing, Institute for Geography, University of Leipzig, Leipzig, Germany. Institute of Biodiversity, Friedrich Schiller University Jena, Jena, Germany. Max-Planck Institute for Biogeochemistry, Jena, Germany" |
| ISSN/ISBN: | 1461-0248 (Electronic) 1461-023X (Linking) |
| Abstract: | "Forest canopies are complex and highly diverse environments. Their diversity is affected by pronounced gradients in abiotic and biotic conditions, including variation in leaf chemistry. We hypothesised that branch-localised defence induction and vertical stratification in mature oaks constitute sources of chemical variation that extend across trophic levels. To test this, we combined manipulation of plant defences, predation monitoring, food-choice trials with herbivores and sampling of herbivore assemblages. Both induction and vertical stratification affected branch chemistry, but the effect of induction was stronger. Induction increased predation in the canopy and reduced herbivory in bioassays. The effects of increased predation affected herbivore assemblages by decreasing their abundance, and indirectly, their richness. In turn, we show that there are multiple factors contributing to variation across canopies. Branch-localised induction, variation between tree individuals and predation may be the ones with particularly strong effects on diverse assemblages of insects in temperate forests" |
| Keywords: | Animals Forests *Herbivory Insecta Plant Leaves Predatory Behavior *Trees canopy diversity herbivory induced defences polyphenols predators trophic interactions vertical stratification volatile organic compounds; |
| Notes: | "MedlineVolf, Martin Volfova, Tereza Seifert, Carlo L Ludwig, Antonia Engelmann, Rolf A Jorge, Leonardo Re Richter, Ronny Schedl, Andreas Weinhold, Alexander Wirth, Christian van Dam, Nicole M eng 20-10543Y/Grantova Agentura Ceske Republiky/ DFG- FZT 118/Deutsche Forschungsgemeinschaft/ 202548816/Deutsche Forschungsgemeinschaft/ Ref.3.3-CZE-1192673-HFST-P/Alexander von Humboldt-Stiftung/ MSM200962004/Akademie Ved Ceske Republiky/ Letter England 2021/12/28 Ecol Lett. 2022 Apr; 25(4):729-739. doi: 10.1111/ele.13943. Epub 2021 Dec 27" |
