By Linda Heron on
Sunday, April 7th, 2013
Reservoirs represent a significant portion of the freshwater surface on the planet. In Canada, most reservoirs are constructed to provide stable water supply for the generation of hydro-electric power. Particularly in the relatively low topography of the Precambrian Shield, the creation of reservoirs often results in the flooding of large areas of former wetland and upland forest.
By the late 1970’s, researchers recognized that fish populations in many newly-flooded reservoirs were subject to significant increases in tissue concentrations of methyl mercury. Humans relying of these fish for regular food supply were at risk of developing mercury poisoning, which can result in severe damage to the nervous system. What was causing this mercury problem and how could it be mitigated? Continue reading →
By Linda Heron on
Thursday, April 4th, 2013
Harper seals our fate on water and energy sustainability
Note: This is an excerpt of the original article – access by clicking here
The federal government states that Fisheries and Oceans Canada no longer need to do this type of research. And yet when we look at the research being conducted at the ELA, the scientific data is sorely needed for a sustainable energy strategy.
One ELA study assesses the effects of hydroelectric development. Hydroelectric dams are often touted as a ‘clean’ energy solution. However, the ELA study raises questions about whether hydroelectric dams have similar impacts as burning fossil fuels.
“There’s a new idea around that reservoirs may be significant sources of greenhouse gases to the atmosphere. And we want to test that idea, ”says Drew Bodaly, Research Scientist at the Department of Fisheries and Oceans in this Experimental Lakes video (see below). Continue reading →