GDFCF promotes the long term survival of ecosystems and biodiversity of Area de Conservacion Guanacaste through conservation, education, science-based management, and biodiversity development.  We support a globally-significant example of tropical forest restoration and conservation.

    Edwin Apú family on their way to school.  The children grow up with their father as a role model in holding a quality job in biodiversity management.

  • Bioliteracy for everyone

    GDFCF provides transparent and science-based knowledge for users of exceptionally diverse tropical wildlands that includes schoolchildren, local residents, and the international community.  We promote our wildlands management style with conservation and restoration efforts worldwide.

    Last instar caterpillar of an undescribed species of skipper butterfly (Nascus Burns01), immediately after molting from the previous instar.

  • Research throughout

    Science-based understanding of ACG's forest and marine ecosystems are conducted by local resident career "parataxonomists" in collaboration with national and international science networks.  For 34 years, ACG has worked to restore nature though involvement of neighboring communities to ensure its survival. GDFCF and its founders have been a major dance partner in the evolution of this conservation restoration model.

    Edwin Apú, parataxonomist, entering caterpillar collection and rearing data.

  • Área de Conservación Guanacaste

    With GDFCF support, ACG:

    • includes ~375,000 species of which less than 1/3 are known to science
    • contains 2.7% of total global biodiversity
    • contains > 60% of Costa Rican biodiversity
    • consists of only 2% of the land base of Costa Rica
    • covers 165,000 hectares, or about 412,000 acres (by comparison Great Smoky National Park in U.S. is 521,000 acres)
    • is a globally recognized UN World Heritage Site

     A small sample of the literally thousands of moths and butterflies that live in ACG


  • Marine Bioawareness

    Children from the coastal community of Cuajiniquil, a rural fishing village that borders Area de Conservacion Guanacaste, explore the living world around their town - in the sea and on the land - through a unique educational program that exposes local kids to the biology in their "backyards".  The program has proved to be so popular that the parents want to go along too.  Read more

  • Susan Miller honored with new butterfly

    Dan Janzen and Winnie Hallwachs just announced a new species of ACG butterfly being described by Nick Grishin and John Burns, in honor of Susan and Kenton Miller, at our recent reception in Washington DC, generously hosted by Costa Rican Ambassador Muni Figueres. Susan is a great friend of GDFCF and of tropical biodiversity big and small. Her late husband Kenton Miller was the pioneering tropical conservation biologist who in the late 1960's facilitated the founding of Area de Conservacion Guanacaste in its first edition, as Parque Nacional Santa Rosa. Susan is pictured here with Jemadia suekentonmiller.