Flow of economic benefits from coral reefs in a multi-use Caribbean Marine Protected Area using network theory

Francoise Cabada-Blanco*, Aldo Croquer, Edgard Yerena, Jon Paul Rodriguez

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Adaptation to changes in the delivery of ecosystem services while maintaining resilience of natural systems is one of the main challenges faced by multi-use marine protected areas (MPAs). To overcome this, it is crucial to improve our understanding of interdependencies among resource users and ecosystems. In this study we used networks to model the socio-ecological system of a multi-use MPA in the southern Caribbean. Using a mixed-method approach, we built a socio ecological network (SEN) from the flow of economic benefits that stakeholders obtain from coral reefs in Los Roques National Park. We specifically looked at how these benefits are distributed among stakeholder groups and how the structure and other network properties can inform management. For this, four networks (simple, weighted, directed and directed-weighted) were built from 125 nodes representing three services and six stakeholder groups, linked through 475 edges. The SEN structure indicated an open resource use pattern with reduced social capital, suggesting that community-based management could be challenging. Only 31% of the benefits from ecosystem services stay within the SEN. Regulation services, derived from the coral reef framework were the most important in terms of maintaining the flow of benefits through the SEN; however, most benefits depended on provisioning services. This approach, based on network theory allowed identification of inequalities in the access to benefits among groups, externalities in benefits derived from fisheries and trade-offs between provisioning and regulation services. Our results suggest that Los Roques might be falling into a socio-ecological trap. Improving access to benefits and increasing trust need be prioritized. Low-cost management intervention can help internalize financial benefits and reduce trade-offs affecting more vulnerable stakeholder groups. However, these would require changes in governance and institutions at the executive level.
Original languageEnglish
Article number671024
Number of pages15
JournalFrontiers in Marine Science
Volume67
Issue number102
DOIs
Publication statusPublished - 13 May 2021
Externally publishedYes

Keywords

  • Los Roques
  • coral reef management
  • Marine Protected Areas (MPAs)
  • socio-ecological network
  • Graph theory
  • Conservation-of-Resources theory

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