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Updated: Feb 13, 2026

Collection and Long-Term Maintenance of Leaf-Cutting Ants Atta in Laboratory Conditions
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High competition between ant species at intermediate temperatures.

Tae-Sung Kwon1

  • 1Forest Insect Pests and Diseases Division, National Institute of Forest Science, 57 Hoegi-ro, Dongdaemun-gu, Seoul 130-712, Republic of Korea.

Journal of Thermal Biology
|March 3, 2018
PubMed
Summary

Climate warming shifts ant species distributions, but competition intensity is highest at intermediate temperatures. Ant competition does not significantly impact species occurrence, suggesting limited effects in temperate regions.

Keywords:
AbundanceAntBait species displacementClimate warmingCompetition intensityDiversityTemperature

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Area of Science:

  • Ecology
  • Climate Change Biology
  • Behavioral Ecology

Background:

  • Climate warming is causing rapid poleward and upward shifts in species distributions.
  • These range shifts alter species interactions, particularly competitive dynamics.
  • Understanding how temperature influences interspecific competition is crucial for predicting ecological responses to climate change.

Purpose of the Study:

  • To investigate the relationship between temperature and the intensity of interspecific competition in ant communities.
  • To determine the influence of interspecific competition on the local and regional occurrence of ant species.
  • To assess the impact of climate warming on ant community structure and competitive interactions.

Main Methods:

  • Ant competition intensity was measured using bait-sharing experiments across six temperature gradients.
  • Ant abundance was quantified using pitfall traps at each site.
  • Species co-occurrence patterns were analyzed at local and regional scales.

Main Results:

  • Interspecific competition intensity peaked at intermediate temperatures, exhibiting a unimodal pattern.
  • Low-temperature ant species experienced reduced behavioral dominance at warmer sites due to the prevalence of dominant intermediate-temperature species.
  • Ant species exhibited random co-occurrence locally but were segregated regionally by temperature, indicating environmental filtering.

Conclusions:

  • Ant competition intensity is temperature-dependent, peaking at intermediate ranges.
  • Despite shifts in dominance, ant competition did not directly influence species occurrence at either local or regional scales.
  • The impact of climate warming-induced changes in interspecific competition on temperate ant communities may be less significant than previously anticipated.