News archive - October 2022

Thursday, October 20, 2022

ERG graduate student Danielle Green is the winner of the 2022 Farvolden Scholarship

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.

Wednesday, October 12, 2022

New research paper examines the impact of winter pulsed warming and snowmelt on nitrogen cycling in agricultural soils

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.

Thursday, October 6, 2022

New paper explores the role of iron in the dissolution of amorphous silica

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.

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