Ecologist Daniel Janzen Restores 169,000 Hectares of Costa Rican Forest

Daniel Janzen, a biologist whose work bridges field ecology, evolutionary science, and conservation, has spent decades studying tropical ecosystems. His research in Costa Rica, alongside biologist Winnie Hallwachs, led to the creation of the Área de Conservación Guanacaste (ACG). This expansive conservation landscape connects forests, volcanic ecosystems, and marine environments.

Janzen's approach uniquely integrates conservation with local communities, moving beyond the idea of protected areas as isolated zones. The University of Pennsylvania recognizes him as a leading figure in conservation biology, with his research contributing hundreds of scientific publications and influencing modern tropical biodiversity approaches.

His fascination with the tropics began at age 14 during a butterfly-collecting trip to Mexico. After studying biology at the University of Minnesota and earning a PhD from UC Berkeley, his research focused on the intricate relationships between tropical plants and animals, particularly insects like caterpillars and their interactions with host plants and parasites.

In the 1980s, Janzen's role evolved from documenting species to active conservation. Concerned that simply establishing protected areas was insufficient, he shifted his focus to ensuring these areas functioned as part of the surrounding society. This philosophy is embodied in the ACG, which functions as a large-scale conservation experiment involving restoration, biodiversity research, local employment, and partnerships.