Vice chairman board directors Panama Canal College, 1989-1993. Board directors International School Panama, 1983-1985, 90-93, Fundacion Natura, secretary, board directors, since 1991. Board directors Ancon Panama, 1985-1997, Earthwatch, 1995-1997, City of Knowledge, since 1996, Charles Darwin Foundation Inc., since 2003, Mpala Wildlife Foundation, since 2003.
Honorary director Instituto Latino Americano de Estudios Avanzados. Director Biomusceo Panama. Fellow Linnean Society (London), American Association for the Advancement of Science, American Academy Arts & Sciences.
Member American Society Naturalists, Society Study of Evolution, New York Academy of Sciences Clubs: Cosmos (Washington).