Dr. Wheeler has been a research entomologist for more than 20 years at the USDA/ARS Invasive Plant research lab in Davie, FL. In this role he has been working to develop biological control of the invasive weeds Brazilian peppertree, Chinese tallow tree, Australian pine and earleaf acacia. He has also worked on evaluating the impact of released biological control agents against air potato, hydrilla, melaleuca, and water lettuce.