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Related Experiment Video

Updated: Oct 24, 2025

Author Spotlight: Collective Behavioral Analysis of the Nematode, Caenorhabditis elegans

Author Spotlight: Collective Behavioral Analysis of the Nematode, Caenorhabditis elegans

Published on: August 25, 2023

Collective behaviour can stabilize ecosystems.

Benjamin D Dalziel^1,2, Mark Novak³, James R Watson⁴

¹Department of Integrative Biology, Oregon State University, Corvallis, OR, USA. benjamin.dalziel@oregonstate.edu.

Nature Ecology & Evolution

|August 13, 2021

Summary

This summary is machine-generated.

Collective behaviour, where group actions impact individuals and vice versa, can stabilize ecosystems. By incorporating collective movement into ecological models, researchers found it mitigates extinction risks and promotes biodiversity.

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Area of Science:

Ecology
Theoretical Ecology
Behavioral Ecology

Background:

Collective behaviour, involving social interactions that link individual and group actions, is widespread across taxa and ecosystems.
While individual and group-level mechanics of collective behaviour are studied, its ecosystem-level implications, particularly in consumer-resource dynamics, remain unclear.
Cross-scale feedback loops in collective behaviour can offer fitness benefits (e.g., resource exploitation) and costs (e.g., competition).

Purpose of the Study:

To investigate the role of collective behaviour, specifically collective movement, in shaping ecological dynamics.
To determine if collective behaviour can influence consumer-resource cycles and species coexistence.
To explore how social-ecological feedback from collective movement affects ecosystem stability and biodiversity.

Main Methods:

Introduction of collective movement into a canonical consumer-resource dynamics model.
Analysis of emergent social-ecological feedback loops.
Simulation of unstable ecological scenarios to observe the impact of collective movement.

Main Results:

Collective movement was shown to attenuate consumer-resource cycles.
The inclusion of collective movement promoted species coexistence in ecological models.
Emergent social-ecological feedback mitigated conditions leading to extinction in unstable scenarios.

Conclusions:

Collective behaviour, exemplified by collective movement, can stabilize ecological dynamics.
Collective behaviour plays a crucial role in preventing extinctions and maintaining biodiversity.
Understanding collective behaviour is essential for comprehending ecosystem functioning and resilience.