Researchers are taking a close look at how an oil spill in freshwater habitat will affect the physiology and health of B.C.sa国际传媒檚 coho salmon.
The University of Guelph study comes ahead of the late-2022 completion of the TransMountain Pipeline Expansion project that will triple the outflow of millions of litres of diluted bitumen from the Alberta oil sands to Vancouver. The research, led by Prof. Todd Gillis and Dr. Sarah Alderman at the U of Gsa国际传媒檚 Department of Integrative Biology, was spurred by public concern of how a pipeline rupture will impact imperilled salmon populations in the Fraser River Watershed.
sa国际传媒淚tsa国际传媒檚 an ambitious project,sa国际传媒� said Alderman, sa国际传媒渂ut these data are essential for making informed decisions on how to protect salmon, before or after a spill.sa国际传媒�
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Coho spawn in over half of the 1,500 streams in B.C. and Yukon, generally spending one year in freshwater. In northern populations, most juveniles spend two or three years in freshwater before entering the ocean.
With $350,000 in funding from the federal governmentsa国际传媒檚 Oceans Protection Plan sa国际传媒� Fate, Behaviour, and Effects Initiative, which aims to better understand oil spill behaviour and its biological impacts, the two-year study will determine which life stages of the salmon are most vulnerable to diluted bitumen, whether higher temperatures in contaminated water alter egg development and whether the fishessa国际传媒� sense of smell, which they use to locate their natal streams, is impaired by exposure to the substance.
Alongside colleagues at Simon Fraser University and the University of British Columbia, the U of G researchers have received $1.2 million in funding over the past six years to address knowledge gaps in early life stages of salmon exposed to diluted bitumen, contributing to a broader understanding of the impacts of contaminants on fish and fisheries.
The group was the first to publish studies describing how even a small amount of diluted bitumen can affect salmon development, and impair their ability to swim.
sa国际传媒淪o a spill into a salmon-bearing river could be devastating to populations that are already struggling,sa国际传媒� Alderman said.
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