LRES Ph.D. Dissertation Defense: Abdullah Alowaifeer
- Friday, April 26, 2019 at 12:00pm
- Leon Johnson Hall, 325 - view map
Investigating Biological Elemental Cycling of Arsenic, Mercury, and Glycine Betaine in Aquatic Ecosystems
Abstract: Elemental cycling is a complex process that occurs abiotically and biotically. While abiotic cycling is well defined, biological cycling is more sophisticated as it involves different microbes, animals, and enzymes that govern its form and fate. In my project, I investigated the biological cycling of two of the most know toxic elements, arsenic and mercury. I examine their bioavailability, bioaccumulation and biomagnification in freshwater aquatic systems using Yellowstone lake as a study model. In addition, the sources and sinks of glycine betaine, an important aquatic metabolite that contributes to the carbon and nitrogen cycle, is investigated in Yellowstone lake and three rivers located around the state of Montana.
- Department of Land Resources and Environmental Sciences