B04b - Biogeochemistry in the limnos
Date & Time
Wednesday, May 10, 2023, 1:30 PM - 3:00 PM

This session will highlight research contributions falling within the broad discipline of aquatic biogeochemistry. We invite contributions from limnologists who work on questions of biogeochemistry, and biogeochemists who work in aquatic systems, but aren’t quite ready to self-identify as limnologists. We are especially interested in work that investigates the transport, storage, and transformation of carbon, macro and micro-nutrients, and pollutants in aquatic systems, from tropical regions to polar environments. Studies examining water quality dynamics, nutrient cycling, contaminant behaviour or greenhouse gas exchanges in streams, wetland, lakes or reservoirs are welcomed. Field and model-based analyses ranging from fine-scale mechanisms to landscape-scale patterns and processes are all within scope. We also encourage synthesis of results within a wider context of aquatic environments and human health, climate and land-use change impacts, or aquatic ecosystem dynamics and recovery following disturbances.

Oral talks:

1:30 - 1:45: 

1:45 - 2:00: Variability in soil and stream dissolved organic carbon dynamics in boreal headwater catchments
Presenter(s): Nora Casson, Associate Professor, University of Winnipeg, Karl Friesen-Hughes1, Matthew Morison1,2, Darshani Kumaragamage1, Udaya Vitharana1,3
1University of Winnipeg
2Environment and Climate, Province of Manitoba
3University of Peradeniya

2:00 - 2:15: Cumulative Effects of Beaver Ponds and Forest Harvest on Streamwater Chemistry in Boreal Watersheds
Presenter(s): Wai Ying Lam, PhD candidate, University of Toronto Scarborough, Rob Mackereth, MNRF
Carl Mitchell, UTSC

2:15 - 2:30: Drivers of dissolved organic matter quality and concentration across a complex mountainous subarctic catchment
Presenter(s): Aliana Fristensky, McMaster University, Sean Carey, McMaster University and Graham Clark, McMaster University

2:30 - 2:45: Stream sediment methylmercury as a dominant source to stream water loading in small, boreal forest catchments
Presenter(s): Carl Mitchell, Professor, University of Toronto Scarborough, Vaughn Mangal, Brock University, Haiyong Huang, University of Toronto, Wai Ying Lam, University of Toronto, Erik Emilson, Natural Resources Canada and Robert Mackereth, Ontario Ministry of Natural Resources and Forestry

2:45 - 3:00: Air-stream water temperature relationships reveal regional climate and geomorphology interact to control groundwater sources of boreal forest headwater streamflow
Presenter(s): Helia Kamel, PhD student, Memmorial university of Newfoundland and Labrador, Helia Kamel1, Karen Prestegard2, Susan E. Ziegler1
1 Department of Earth Science, Memorial University, St. John’s, Newfoundland and Labrador, Canada
2 Department of Geology, University of Maryland, College Park, Washington, US

Session Type