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An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.
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Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
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Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a...
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Related Experiment Video

Updated: Sep 12, 2025

JenaTron - An Experimental Approach to Study the Effects of Plant History and Soil History on Grassland Ecosystem Functioning
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Structural stability estimated through critical perturbation determines evolutionary persistence in mutualistic model

Miguel Lurgi1,2, Alberto Pascual-García3

  • 1Centre for Biodiversity Theory and Modelling, Experimental and Theoretical Ecology Research Station, Moulis, France.

Royal Society Open Science
|August 7, 2025
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Summary

Evolutionary adaptation significantly enhances ecological network stability. By incorporating evolutionary dynamics into population models, this study shows that natural selection promotes biodiversity and resilience against environmental changes.

Keywords:
biodiversity losseco-evolutionary dynamicsevolutionary stabilitymutualistic networksstructural stability

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Theoretical Ecology

Background:

  • Ecological network stability is crucial for understanding community persistence.
  • Research often focuses on ecological processes and structure, neglecting evolutionary influences.
  • The interplay between ecology and evolution is vital for community formation and response to change.

Purpose of the Study:

  • To integrate evolutionary adaptation into mutualistic population dynamical models.
  • To investigate the link between ecological stability and persistent evolutionary pathways.
  • To assess the impact of evolutionary events on ecological network stability and biodiversity.

Main Methods:

  • Extension of existing mutualistic population dynamical models.
  • Incorporation of evolutionary adaptation events into ecological models.
  • Simulation analysis to explore network stability under evolutionary and environmental changes.

Main Results:

  • Evolutionary adaptation enhances the structural stability of ecological systems.
  • Simulations show that evolution increases critical competition, promoting stability.
  • Mutualistic interactions foster biodiversity and resilience, particularly under species-level selection.
  • Natural selection steers networks towards reduced effective competition below a critical threshold.

Conclusions:

  • Evolutionary processes play a pivotal role in shaping ecological networks.
  • Ecological network stability is significantly influenced by evolutionary adaptation.
  • Understanding the co-evolution of ecological and evolutionary dynamics is key to predicting biodiversity responses to environmental change.