Peer-reviewed Journal Articles

Conservation International's science is the foundation for all our work. Our global science team is dedicated to advancing conservation science — pursuing actionable knowledge and amplifying it through partnerships and outreach.

To date, Conservation International has published more than 1,300 peer-reviewed articles, many in leading journals including Science, Nature and the Proceedings of the National Academy of Sciences. Here is an archive of our most recent research:

Connectivity of Protected Areas: Effect of Human Pressure and Subnational Contributions in the Ecoregions of Tropical Andean Countries

Luis Santiago Castillo, Camilo Andrés Correa Ayram, Clara L. Matallana Tobón, Germán Corzo, Alexandra Areiza, Roy González-M., Felipe Serrano, Luis Chalán Briceño, Felipe Sánchez Puertas, Alexander More, Oscar Franco, Henry Bloomfield, Victoria Lina Aguilera Orrury, Catalina Rivadeneira Canedo, Vilisa Morón-Zambrano, Edgard Yerena, Juan Papadakis, Juan José Cárdenas, Rachel E. Golden Kroner, Oscar Godínez-Gómez

Land, 9, 239

July 23, 2020

Conservationists recognize the value of protected area (PA) systems, with adequate coverage, ecological representation, connection, and management to deliver conservation benefits. Yet, governments primarily focus on coverage, disregarding quantification of the other criteria. While recent studies have assessed global representation and connectivity, they present limitations due to: (1) limited accuracy of the World Database of Protected Areas used, as governments may report areas that do not meet the IUCN or CBD PA definitions or omit subnational PAs, and (2) failure to include human impacts on the landscape in connectivity assessments. We constructed a validated PA database for Tropical Andean Countries (TAC; Bolivia, Colombia, Ecuador, Perú, and Venezuela) and used the existing Protected-Connected-Land (ProtConn) indicator—incorporating the Global Human Footprint as a spatial proxy for human pressure—to evaluate TAC ecoregions’ representation and connectivity. We found that just 27% of ecoregions in the TAC are both protected and connected on more than 17% of their lands. As we included human pressure, we conclude that previous global ProtConn studies overestimate PA connectivity. Subnational PAs are promising for strengthening the representation of PA systems. If nations seek to meet Aichi target 11, or an upcoming post-2020 30% target, further efforts are needed to implement and report subnational conservation areas and appropriately evaluate PA systems.

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Castillo, L. S., Correa Ayram, C. A., Matallana Tobón, C. L., Corzo, G., Areiza, A., González-M., R., … Godínez-Gómez, O. (2020). Connectivity of Protected Areas: Effect of Human Pressure and Subnational Contributions in the Ecoregions of Tropical Andean Countries. Land, 9(8), 239. doi:10.3390/land9080239