Haag also led a 10-year effort to monitor rates of survival, growth, and reproduction in several healthy mussel populations. Researchers are using data from this project to build demographic models that predict future trends in mussel populations, similar to methods used in predicting changes in human populations.
Finally, Haag conducted important research on the production of growth rings in mussel shells. Like trees, mussels produce annual rings in their shells as they grow. Because some mussel species live for more than 50 years, these rings provide a wealth of information not only about the growth of the animals, but about changes in the aquatic environment over long time periods. The Forest Service scientist has published research findings in a wide array of books and international scientific journals, and his work has been highlighted in popular science magazines in the United States, Great Britain, and Denmark.
Haag is based at the SRS Center for Bottomland Hardwoods Research work unit in Oxford, MS. Haag received his Ph.D. in biology from the University of Mississippi in 2002, his master's degree in zoology from The Ohio State University in 1991, and his bachelor's degree in biology from Eastern Kentucky University in 1988. He is a native of Lexington, KY.
|Contact: Stevin Westcott|
Southern Research Station - USDA Forest Service