Wetlands Conservation

Wetland ecosystems are some of the most biologically diverse ecosystems on the planet, home to innumerable species of plants and wildlife. In addition to supporting a vast array of flora and fauna, wetlands perform several important ecological and geological functions – they purify and filter water sources, control flooding, stabilize shorelines, store carbon, and provide protection from natural disasters. Unfortunately, the world’s wetlands are being degraded at an alarming rate, so many international conservation efforts are now focused on preserving these delicate ecosystems and raising awareness about their issues.

Osa Conservation has begun to focus efforts on the Térraba-Sierpe National Wetlands located at the neck of the Osa Peninsula. The area encompasses over 66,000 acres of land along the Térraba and Sierpe rivers and includes the largest intact mangrove system in Costa Rica. Our new wetlands program aims to work with government authorities and local communities to protect this fragile ecosystem and the abundance of natural capital it contains.

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For more information on the economic and natural value of the Térraba-Sierpe National Wetlands, read the following report compiled by the University of Vermont.


Nature’s Value in the Térraba-Sierpe National Wetlands