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Marine protected areas (MPAs) with shared governance show significantly higher fish biomass. Collaborative management, involving diverse stakeholders, is key to achieving successful ocean conservation goals.

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Area of Science:

  • Marine Conservation Science
  • Ecosystem Management
  • Environmental Governance

Background:

  • Marine protected areas (MPAs) are crucial tools for coastal resource management and conservation.
  • Understanding the effectiveness of different governance structures within MPAs is limited.
  • Existing research often overlooks the ecological outcomes linked to diverse institutional arrangements.

Purpose of the Study:

  • To compare the ecological performance of MPAs based on their governance categories.
  • To investigate the relationship between MPA governance types and fish biomass.
  • To inform global efforts aimed at expanding MPA coverage for ocean protection.

Main Methods:

  • Utilized a unique dataset of 217 global MPAs, including International Union for Conservation of Nature (IUCN) governance categories.
  • Analyzed ecological outcomes, specifically focusing on fish biomass.
  • Employed statistical analysis to compare governance approaches and identify significant factors.

Main Results:

  • MPAs with shared governance arrangements demonstrated a 98% higher likelihood of greater fish biomass compared to state-governed MPAs.
  • Older MPAs, those in higher GDP countries, and MPAs with larger no-take areas also exhibited higher fish biomass.
  • Shared governance, involving multiple government and non-government actors, was positively correlated with ecological success.

Conclusions:

  • Shared and decentralized governance models enhance the effectiveness of MPAs in achieving conservation outcomes.
  • Multi-stakeholder participation is vital for successful MPA implementation, especially with global targets for ocean protection.
  • Future MPA strategies should prioritize collaborative management structures to maximize ecological benefits.