Marine Protected Areas Can Help Ensure Long-Term Conservation of Natural Resources

Strategic Insights -

Researchers at the Gloucester Marine Genomics Institute have found that marine protected areas (MPAs) can help ensure the long-term conservation of natural resources, biodiversity, ecosystem services, and cultural values in the face of anthropogenic change. The study used a novel approach, incorporating environmental DNA (eDNA) to overcome the challenges of determining MPA effectiveness. The eDNA analysis revealed a rich biodiversity in the Stellwagen Bank National Marine Sanctuary, including three archaeal, 46 bacterial, 22 protistan, and 17 metazoan phyla.

Key Takeaways:

  • Marine protected areas (MPAs) can help ensure the long-term conservation of natural resources, biodiversity, ecosystem services, and cultural values.
  • The study used environmental DNA (eDNA) to overcome the challenges of determining MPA effectiveness.
  • The eDNA analysis revealed a rich biodiversity in the Stellwagen Bank National Marine Sanctuary, including three archaeal, 46 bacterial, 22 protistan, and 17 metazoan phyla.
  • Vertebrate eDNA monitoring revealed that most species were observed in bottom water, suggesting that less extensive sampling could be sufficient if targeting overall vertebrate richness.
  • The study highlighted the importance of including multiple sample types to capture species richness, particularly for indicator species such as those that cause harmful algal blooms.
  • Future evaluations of cost, sampling scope, frequency, and how to incorporate data into management practices are needed to effectively utilize eDNA for MPA management.
  • The research offers important baseline information for new hypotheses testing in the field of marine conservation.

Statistics:

  • 40 sites were sampled for eDNA analysis in the Stellwagen Bank National Marine Sanctuary.
  • 46 bacterial, 22 protistan, and 17 metazoan phyla were detected through eDNA analysis.
  • 75% of marine species were observed in bottom water during vertebrate eDNA monitoring.
  • The study revealed significant differences in microbial, phytoplankton, and zooplankton community composition between sample types.

Sources:

  • Environmental DNA Documents Ecosystem-Wide Biodiversity Within the Marine Protected Area Stellwagen Bank National Marine Sanctuary. Environmental DNA, 2025,7(3):n/a-n/a. The publisher for Environmental DNA is Wiley.
  • [https://doi-org.sdpl.idm.oclc.org/10.1002/edn3.70138](https://doi-org.sdpl.idm.oclc.org/10.1002/edn3.70138)