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The Jena Experiment The Jena Experiment aims at filling this gap of knowledge by applying novel experimental and analytical approaches in one of the longest-running biodiversity experiments in the world (running since 2002)
Main Experiment – The Jena Experiment The Main Experiment was set up in spring 2002, to study the interactions between plant diversity and ecosystem processes, focusing on element cycling and trophic interactions (Roscher et al 2004, Weisser et al 2017)
Design - The Jena Experiment A main aim of the Jena Experiment is that complementary research groups are able to study ecosystem processes on the same plots and across many years Emphasis on different biodiversity effects is therefore reflected in different experimental designs in large as well as small plots
The Experiment – The Jena Experiment Main Experiment ΔBEF Experiment Ecotron Experiment Trait-Based Experiment Monocultures Dominance Experiment Photo
Data - The Jena Experiment The research consortium of the Jena Experiment strongly supports data sharing, while ensuring that the data providers and the Jena Experiment get a fair credit for their work through co-authorship, citation, and or inclusion in the acknowledgments of resulting papers
Ecotron Experiment – The Jena Experiment In spring 2022, we will excavate two monoliths of each of 22 selected plots of the former Trait-Based Experiment (Ebeling et al 2014) covering a gradient from 1 to 3 plant species, and additional four monoliths of a selected 6 species plot (48 monoliths in total)
New publication from De Giorgi et al. in Ecology and Evolution . . . We conducted a transplant experiment for nine plant species in a 17-year-old biodiversity experiment (Jena Experiment) We used offspring of plants selected in the biodiversity experiment and from plants without selection in the experiment (naïve)
New publication from Cheng et al. in Nature Communications . . . We find that biodiversity increases resistance to invaders across various environmental conditions However, the positive biodiversity effect on invasion resistance is strengthened under experimental warming, whereas it is weakened under experimentally imposed drought
Associated Projects – The Jena Experiment To answer this question, I will do metagenomic analysis on samples from the renowned Jena biodiversity experiment, as well as establish mesocosm systems in which I vary the proportion of legumes in non-legume legume mixtures