Research efforts have long focused on how biodiversity influences ecosystem function, with recent attention turning toward multitrophic biodiversity and the provisioning of multiple ecosystem functions. What still remains poorly understood is how interactions among trophic groups are linked to specific functions as well as ecosystem multifunctionality, especially in real-world ecosystems. We are addressing this challenge by investigating energy fluxes among trophic groups in food webs, as energy flux represents ecosystem functions carried out by different consumers. We do this using a combination of approaches including controlled experiments, observational studies, and global data synthesis.

Food web energy fluxes and their relation to ecosystem services across ecosystems [from Barnes et al. (2018)]
A forest soil food web from central Germany with weighted arrows to represent energy fluxes [from Gauzens et al. (2019)]