Biology

Onychophora Online
“Velvet worms”, living fossils that exist since Cambrian times and have been featured by National Geographic and the BBC. Their natural history, evolution, classification, gallery, newsletter.

Tropical Molluscs
Molluscs are the third largest animal group in biodiversity (number of species). They are important as food, agricultural pests, bioindicators, vectors of parasites of medical and veterinary importance, handycrafts and others.

Tropical Butterflies
Natural history and biological research on sound production in butterflies (Lepidoptera), protective coloration, crypsis and its bearing on industrial melanism and evolution theory.

Lichens and Air Pollution
Lichens as bioindicators of air pollution ("atmospheric quality") both in cities and more natural ecosystems. Scientific research, how-to guides, real cases in Costa Rica.

Biogeography
Biological study of geographic distribution of plants, animals and other organisms. A critical review of dispersalism, panbiogeography and vicariant schools.

Rev.Biol.Trop. Online
The Internet version of the International Journal of Tropical Biology and Conservation, a scientific journal about tropical biology that has been published since 1953. It has free scientific papers and information for journal authors.