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Resource availability and heterogeneity shape the self-organisation of regular spatial patterning.

Jessica A Castillo Vardaro1,2, Juan A Bonachela3, Christopher C M Baker1,4

  • 1Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA.

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Summary

Competition and resource availability shape termite colony spacing, creating ordered patterns. Environmental context influences these social insect ecosystem engineers and overall ecosystem productivity.

Keywords:
coupled human-natural systemsecosystem engineersemergent propertiesrangeland managementself-organised spatial patterningsemi-arid African savannasspatial heterogeneitytermite moundsterritorial interference competition

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Area of Science:

  • Ecology
  • Behavioral Ecology
  • Theoretical Ecology

Background:

  • Understanding large-scale ecological patterns and their impact on ecosystem functioning is a key challenge.
  • Fungus-farming termites provide a model system to study how competition and spatial heterogeneity influence colony dispersion patterns.

Discussion:

  • Inter-nest distances increase with nest size and resource scarcity, indicating strong competition.
  • Ordered spatial patterns emerge in models under high resource availability and low heterogeneity.
  • Environmental context critically shapes pattern formation by social-insect ecosystem engineers.

Key Insights:

  • Competition and resource availability are primary drivers of termite colony spacing.
  • Dynamical modeling reveals mechanisms of pattern regularity and system-wide productivity effects.
  • Environmental factors explain variability in termite-engineered ecosystems.

Outlook:

  • Further research can explore the long-term consequences of these patterns on ecosystem resilience.
  • Investigating other social insect systems can reveal broader principles of pattern formation.
  • This study provides a framework for understanding how environmental context shapes ecological patterns.