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Related Experiment Video

Updated: Jan 30, 2026

Investigation of Plant Interactions Across Common Mycorrhizal Networks Using Rotated Cores

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Published on: March 26, 2019

Plant interactions shape pollination networks via nonadditive effects.

Gianalberto Losapio^1,2, Miguel A Fortuna¹, Jordi Bascompte¹

¹Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich, 8057, Switzerland.

|January 14, 2019

Summary

Plant interactions, like facilitation, significantly shape pollinator diversity and ecological networks. These plant-plant relationships influence biodiversity across trophic levels, impacting community structure.

Keywords:

biodiversity competition ecological networks ecosystem functioning facilitation foundation species interaction chains interaction diversity nestedness pollination

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Area of Science:

Ecology
Community Ecology
Conservation Biology

Background:

Ecological studies often isolate plant-plant interactions from plant-animal interactions.
Understanding how interactions within and across trophic levels affect biodiversity and ecological networks is crucial but poorly understood.

Purpose of the Study:

To investigate how plant-plant facilitation influences pollinator diversity and pollination networks.
To determine the effects of plant interactions on ecological network structure across trophic levels.

Main Methods:

A field experiment was conducted in Sierra Nevada, Spain, manipulating plant communities based on foundation species facilitation.
Plant-pollinator networks were sampled at a fine spatial scale to analyze interaction patterns.

Main Results:

Plant-plant facilitation was found to shape pollinator diversity and structure pollination networks.
Nonadditive effects of plant interactions on pollinator and interaction diversity were synergistic in some networks and additive in others.
Plant facilitation negatively impacted pollination network structure, potentially due to increased competition for pollinators.

Conclusions:

Plant interactions demonstrably couple different network types, revealing cascading effects through interaction chains in diverse communities.
Foundation species facilitation plays a significant role in structuring plant-pollinator interactions and overall community biodiversity.