As ship traffic grows in Canada’s Hudson Bay, new research shows native Arctic microbes respond too slowly to oil spills to prevent widespread damage.
Justin Fiacconi reports for CBC News.
In short:
- University of Manitoba researchers working at the new Churchill Marine Observatory found oil-degrading microbes in Arctic waters take weeks to respond — far too slow to contain real-world spills.
- Melting sea ice is extending the Hudson Bay shipping season, increasing the likelihood of oil spills along the sensitive coastline, where many Indigenous communities rely on marine ecosystems for food and livelihood.
- The $45-million observatory allows controlled oil spill experiments in Arctic seawater, enabling safer, more precise studies that were previously impossible in the open environment.
Key quote:
"We do see that it takes at least a few weeks or a month for the microbes to respond and actually start to break down the oil, and that's just too long in the case of a real oil spill."
— Eric Collins, research lead and Canada Research Chair in Arctic Marine Microbial Ecosystem Services
Why this matters:
As Arctic ice recedes, new shipping routes are opening across previously inaccessible waters. That may bring economic opportunity, but also sharp environmental risks. Unlike warmer regions, Arctic ecosystems are slower to recover and more vulnerable to contamination. Oil spills in these waters could devastate marine life and threaten Indigenous communities that depend on it. Because cold temperatures slow microbial breakdown of oil, natural cleanup processes lag behind, allowing pollution to spread across coastlines and food chains. The Hudson Bay’s changing climate is a preview of similar changes across the circumpolar North.
Learn more: Melting Arctic ice is rewriting the planet’s future
