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Wanfa Wang, a former ERG International Visiting Graduate Student from Tianjin University, published a new paper in the Journal of Hydrology describing his PhD research on carbon cycling in dam reservoirs in karst regions. Co-authors from ERG include Steph Slowinski, Shuhuan Li and Philippe Van Cappellen. Chemical and physical carbonate rock weathering in karst regions supply large quantities of particulate and dissolved inorganic carbon (PIC and DIC) to rivers and, ultimately, to the ocean.

Ecohydrology Research Group Attend AGU 2022

ERG group members gathered for our annual holiday party! Happy Holidays and Happy New Year!

Call for manuscripts for the upcoming Special Issue in the Journal of Hydrology on “Groundwater flow and reactive solute transport processes in hyporheic zone”.

Danielle Green, a first year MSc student in ERG, was awarded the Davis Memorial Scholarship in Ecology. The scholarship will help support her research project on Impacts of Permafrost Thaw on Water Quality of Groundwater Discharge to Northern Lakes.

Ecohydrology ProfessorsPhilippe Van Cappellen and Fereidoun Rezanezhad are co-Investigators on two new research projects on building sustainable net-zero emissions in Canada by 2050, funded by the Government of Canada's Environmental Damages Fund through the Climate Action and Awareness Fund (CAAF).

Philippe and Fereidoun are co-Investigators on Can-Peat: Canada's peatlands as nature-based solutions to climate

Lakes in cold regions are key ecosystems. However, the environmental controls on the biological productivity of these lakes – including surface temperature, ice phenology, nutrient loads, and mixing regime – are increasingly altered by climate warming and land-use changes.

Danielle Green, a first year MSc student in ERG, was awarded this year’s Farvolden Scholarship. The scholarship will help support her research project on Impacts of Permafrost Thaw on Water Quality of Groundwater Discharge to Northern Lakes. The project will focuses on lake browning trends in Canada’s northern freshwater resources, identifying the mechanism and pathways of groundwater DOC discharge, and assessing how browning and related changes in water chemistry affect the trophic state of lakes.

A research paper by ERG group member Danielle Green published in Frontiers in Environmental Science examines the effects of winter pulsed warming and snowmelt on nitrogen cycling in agricultural soils. The field-scale lysimeter experiment results show that increased winter pulsed warming and snowmelt over the non-growing season causes increased loss of nitrogen from agricultural soils as nitrous oxide emissions in silt loam soils and nitrate leaching in loamy sand soils.

The dissolution of amorphous silica (SiO₂), including biogenic silica produced by algae and higher plants, is the key process controlling the recycling of nutrient silicon in terrestrial and aquatic environments. The rate at which amorphous silica dissolves in a particular environmental setting depends on the prevailing physical and geochemical conditions. In anoxic environments, such as water saturated soils or sediments in deeper parts of lakes, ferrous iron (Fe²⁺) ions are ubiquitous.