Episode 8: How do we improve the water quality of lake Winnipeg?

21 Dec 2022

Dr. Nora Casson studies how environmental pressures affect water quality. Dr. Darshani Kumaragamage’s research focuses on the environmental impacts of agricultural practices. Together, they are working on understanding how climate change and human activities are affecting the Lake Winnipeg watershed.

On this episode the research question is: “How do we improve the water quality of Lake Winnipeg?”

Episode Credits

Written, Narrated and Produced by Kent Davies

UWRQ Logo by Kimberley Moore


Dr. Nora Casson, Interviewed by Kent Davies, October 19, 2022, in Winnipeg, MB. Digital Audio Recording. “Research Question Podcast,” Oral History Centre Archive, University of Winnipeg, Winnipeg, MB.

Dr. Darshani Kumaragamage, Interviewed by Kent Davies, November 3, 2022. Remote Recording. Digital Audio Recording. “Research Question Podcast,” Oral History Centre Archive, University of Winnipeg, Winnipeg, MB.


Lee Rosevere – Let’s start at the beginning, Puzzle pieces

Podington Bear – Beautocracy, Crystal Boom Persuasion, Curious Process, Fantasy, Spring Solstice, Trinity Alps,

Xylo-Ziko – Djerba

Simon Mathewson – Scanglobe – Drive

Selected Readings

Attanayake, Chammi P., Randombage Saman Dharmakeerthi, Darshani Kumaragamage, Srimathie Priyanthika Indraratne, and Doug Goltz. “Flooding-induced inorganic phosphorus transformations in two soils, with and without gypsum amendment.” Journal of Environmental Quality, 51(1), 90-100, December 29, 2021.

Orihel, Diane M., Helen M. Baulch, Nora J. Casson, Rebecca L. North, Chris T. Parsons, Dalila CM Seckar, and Jason J. Venkiteswaran. “Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis.” Canadian journal of fisheries and aquatic sciences 74, no. 12 (2017): 2005-2029.

Lasisi, Ahmed, Darshani Kumaragamage, Inoka Amarakoon, Doug Goltz, Nora Jessie Casson, Srimathie Indraratne, and Henry F. Wilson. “Effectiveness of Soil Amendments to Reduce Flooding-Induced Phosphorus Transfer during Snowmelt from Agricultural Soils to Waterways.” In ASA, CSSA, SSSA International Annual Meeting. ASA-CSSA-SSSA, 2021.

Van, Emily, Darshani Kumaragamage, Geethani Amarawansha, and Doug Goltz. “Ferric Chloride Amendment Reduces Phosphorus Losses from Flooded Soil Monoliths to Overlying Floodwater,” Canadian Journal of Soil Science, September 3, 2022.