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The Cambridge Philosophical Society, The Linnean Society of London, The British Ecological Society, Ecological Society of America, Pacific Coast Entomological Society, The Botanical Society of America, Sociedad Botánica de México.
- Associate Researcher Arizona-Sonora Desert Museum, Tucson, Arizona 1997-1998.
- Visiting Scholar. Institute for the Study of Planet Earth. University of Arizona 1994.
- Overseas Student Award, Board of Chancellors and Vice Chancelors of the United Kingdom
1985.
- Medalla Gabino Barreda, Universidad Nacional Autónoma de México 1980.
- Mejor estudiante de México 1980.
- Mejor estudiante de la Facultad de Ciencias, UNAM 1978.