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For effective conservation and habitat management of biodiversity, it is not enough to know a species is present or that it is declining. We must know why it is in trouble. The detailed knowledge to answer the “why” relies on in-depth studies that are unavailable for most species. One way to deal with this problem is to use a few well-studied species as stand-ins or surrogates for the species in trouble. What are the qualifications for these surrogates, and what are the advantages and limitations of this policy? Is it reliable, and is it accurate?

Dr. Pearson's research is focused on ecology, conservation and environmental education. Although he has worked on a breadth of organisms from crabs and insects to Paramecium and birds, and a range of habitat types from coral atolls to desert grasslands, much of his research concentrated on a small group of insects, tiger beetles, in tropical lowland rain forests around the world. He has also worked with the Gila River Indian Community the last five years surveying seasonal changes in the birds of their artificial wetlands. Dr. Pearson has taught 28 biodiversity workshops in 18 countries, and he has written 15 books including a series of travelers' wildlife guides for various countries.