Joseph Rasmussen

Faculty of Arts & Science
Biological Sciences


Research expertise

​My research has made a significant contribution to the development of isotopic tracer approaches to modeling energy flow in aquatic food webs based on fractionation and kinetics of isotopes that cycle through ecosystems. This has provided fresh insights and technical inroads into important ecological problems such as the biomagnification of persistent contaminants (e.g. mercury, PCBs, radionuclides), impacts of heavy metals and mining practices, sewage disoposal, and other pressing environmental issues. Most recently I have been applying these approaches to the conservation of native salmonids, where I have been examining their bioenergetics, life-history and spatial ecology within the Oldman River system.​