Is it possible to reduce the amount of phosphorus being released from agricultural land and into waterways, such as Lake Winnipeg, during the spring melt? It’s a question UWinnipeg Professor Dr. Darshani Kumaragamage, Department of Environmental Studies and Sciences, and her research team are trying to answer. In most parts of the world, erosion, and rain-driven runoff are the major pathways by which phosphorus from agricultural fields enter waterbodies. However, in cold climates like the Canadian prairies, flooding-induced phosphorus loss during the snowmelt period is the dominant transport mechanism of phosphorus from agricultural lands to water bodies.
BLOG: An Ontario problem, a prairie concern
In the spring of 2018, Health Canada proposed a ban on all agricultural uses of two insecticides, thiamethoxam and clothianidin. Health Canada scientists said the insecticides, known as neonics, were accumulating in ponds, creeks and other water bodies near agricultural land. The concentrations were harmful to midges and mayflies and therefore posed a threat to birds and other animals that rely on the insects for food.