Resolving Indirect Effects of Large Herbivores on Terrestrial Ecosystem Functioning

This is a Preprint and has not been peer reviewed. This is version 1 of this Preprint. You must log in to post a comment. There are no comments or no comments have been made public for this article. This is a Preprint and has not been peer reviewed. This is version 1 of this Preprint. Add a Comment You must log in to post a comment. Comments There are no comments or no comments have been made public for this article. The world’s large herbivores play outsized roles in shaping ecosystem processes like primary production, decomposition, and mineralization. Contemporary management of these animals is therefore poised to be a powerful tool for holistic ecosystem management. Yet we currently lack (i) adequate understanding of indirect interactions underlying herbivore control of ecosystem processes, especially belowground, and consequently (ii) an ability to predict how ecosystems will respond to ongoing changes to large herbivore populations such as (re)introductions, range shifts, and population collapse. In this contribution, we synthesize current approaches to meet these challenges and provide a framework to better resolve indirect effects of large herbivores on terrestrial ecosystem functioning. Specifically, we synthesize empirical evidence from across the globe and demonstrate that the consumptive and non-consumptive effects of large herbivores frequently disrupt and restructure the primary biotic and abiotic controls on ecosystem functioning. Next, we derive an analytical framework and illustrate how empiricists can use this framework to resolve key relationships among large herbivores, biotic/abiotic controls, ecosystem processes, and environmental context. Our framework can uncover emergent patterns that are not revealed with existing approaches. We conclude with a roadmap to operationalizing our framework using existing research infrastructure (e.g., large exclosures and distributed networks). https://doi.org/10.32942/X2WD3Z Life Sciences herbivory, indirect effects, zoogeochemistry, aboveground-belowground linkages, Ecosystem functioning, networks, Megafauna, exclosures, soil Published: 2025-10-21 11:28 Last Updated: 2025-10-21 11:28 CC-BY Attribution-NonCommercial 4.0 International Conflict of interest statement: None Data and Code Availability Statement: Not applicable Language: English