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Area of Science:

  • Marine Biology
  • Environmental Science
  • Ecotoxicology

Background:

  • Coral reefs face increasing threats from anthropogenic pollution.
  • Microplastics are pervasive environmental contaminants with largely unknown ecological consequences.

Purpose of the Study:

  • To summarize current knowledge on the impacts of microplastics on coral health.
  • To raise awareness of microplastic pollution as an emerging threat to coral ecosystems.

Main Methods:

  • Literature review and synthesis of recent scientific findings.
  • Analysis of species-specific impacts across various coral physiological and ecological parameters.

Main Results:

  • Microplastics cause reduced coral growth, calcification, and fitness.
  • Negative effects include impaired enzyme activity, altered metabolism, reduced feeding, and compromised coral-Symbiodiniaceae symbiosis.
  • Observed impacts range from tissue necrosis and bleaching to decreased reproductive success and increased susceptibility to contaminants.

Conclusions:

  • Microplastics induce a wide array of detrimental effects on corals across diverse marine environments.
  • Urgent mitigation strategies are needed to address the global threat of microplastic pollution to coral reefs.