Microbiology in Yellowstone National Park.

Yellowstone National Park plays host to numerous microbiological research projects — officially 23, according to the 1996 Investigators' Annual Reports. However, once categories such as aquatic ecology, the study of brucellosis and other wildlife diseases, environmental education, geochemistry and geothermal systems, and vegetation are included, the total came to at least 35 in 1996. Research projects in other scientific disciplines, including geochemistry, geology and environmental monitoring, fire impacts, and even studies of ungulates such as bison and elk, or of other mammals such as bears and wolves, are far fewer in overall numbers.