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Planetary boundaries for a blue planet.

Kirsty L Nash1,2, Christopher Cvitanovic3,4,5, Elizabeth A Fulton3,6

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The planetary boundaries framework needs marine ecosystems to effectively guide global sustainability and environmental policy. Including ocean systems is crucial for accurately assessing risks and informing Earth system governance.

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Area of Science:

  • Earth System Science
  • Marine Ecology
  • Environmental Policy

Background:

  • The planetary boundaries framework is influencing global sustainability discussions and policy.
  • Current research on planetary boundaries predominantly focuses on terrestrial systems.
  • This terrestrial focus overlooks the critical role of marine biomes in Earth system function and human well-being.

Purpose of the Study:

  • To explore planetary boundaries from a marine ecosystem perspective.
  • To analyze how integrating marine systems alters the understanding of boundary risks.
  • To emphasize the necessity of marine system inclusion for effective Earth system governance.

Main Methods:

  • Review and analysis of existing planetary boundaries research.
  • Assessment of marine system contributions to Earth system processes.
  • Evaluation of the impact of marine data on risk assessment for each boundary.

Main Results:

  • Integrating marine perspectives significantly refines the understanding of planetary boundary risks.
  • Key marine processes are fundamental to multiple planetary boundaries.
  • The current framework's efficacy is limited by the exclusion of marine system dynamics.

Conclusions:

  • A marine-inclusive approach is essential for the accurate assessment of planetary boundary risks.
  • Planetary boundaries must incorporate marine ecosystem functions to inform effective global environmental policy.
  • Enhanced integration of marine systems is vital for robust Earth system governance.