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Privately protected areas increase global protected area coverage and connectivity.

Rachel Palfrey1, Johan A Oldekop2, George Holmes3

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Summary
This summary is machine-generated.

Privately protected areas (PPAs) significantly enhance conservation efforts by protecting more biodiversity and improving network connectivity. These areas are crucial for conservation in under-protected and human-impacted regions.

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Area of Science:

  • Conservation Science
  • Biodiversity Management
  • Protected Area Networks

Background:

  • Privately protected areas (PPAs) are expanding globally.
  • Their specific contributions to conservation goals remain under-researched compared to other protected area (PA) types.

Purpose of the Study:

  • To assess the contribution of PPAs to the coverage, complementarity, and connectivity of existing PA networks.
  • To compare PPA effectiveness with other PA governance types across diverse global regions.

Main Methods:

  • Analysis of 17,561 PPAs across 15 countries on 5 continents.
  • Evaluation of PPA placement in relation to biome protection levels and human disturbance.
  • Quantification of PPA impact on Key Biodiversity Areas (KBAs) and overall protected land.

Main Results:

  • PPAs are three times more likely to occur in under-protected biomes (<10% area protected).
  • PPAs are twice as likely to be located in areas with high human disturbance.
  • PPAs protect an additional 1.2% of Key Biodiversity Areas and represent 3.4% of total protected land.
  • PPAs increase PA network connectivity by 7.05%.

Conclusions:

  • Privately protected areas offer unique and significant conservation value.
  • PPAs effectively complement existing protected area networks, especially in critical and disturbed landscapes.
  • Increased attention, recognition, and resources are needed for optimal PPA design and implementation.