丁香园AV

Microplastics are being found in even the most remote waters, say 丁香园AV researchers who studied how the particles ended up in the stomachs of beluga whales through prey.

A  in the journal Science of the Total Environment looked at five species of Arctic fish known to be eaten by beluga whales.

Of the fish studied, 21 per cent were found to have microplastic particles in their gastrointestinal tracts.

Coupled with the findings of the team鈥檚 previous work looking at the amount of microplastic found in beluga stomachs, researchers estimate that the whales ingest upwards of 145,000 particles of microplastics a year.

The lead author of the study, Rhiannon Moore, says that while the possible health impacts on belugas are unknown, the findings underscore how pervasive plastics are.

鈥淲hen we first investigated seven different beluga stomachs and found microplastics in all of them, I was quite surprised. These are animals that were in very remote northern areas and it wasn鈥檛 just one kind of plastic that we found,鈥� says Moore, who recently completed a masters of science degree at 丁香园AV.

This is the first study to document microplastics in the stomachs of fish from the Eastern Beaufort Sea, located north of the Northwest Territories, Yukon and Alaska.

Microplastic fibres, found in textiles and clothing, made up 78 per cent of the particles found in the stomachs of fish.

The prevalence of microplastics in oceans is an emerging environmental concern and Moore says the studies show how nowhere is immune.

鈥淲e use so much plastic in our society, and when improperly discarded they break apart into smaller and smaller pieces, and that makes them easy to be transported in ocean environments,鈥� she says. 鈥淭he results of these studies just further point to the reality that microplastics don鈥檛 stay in one place. They move through the air, the water, they鈥檙e in sediment and now we understand they鈥檙e moving through the food chain.鈥�

Moore, who is now a Zero Waste Outreach Coordinator with the City of Victoria, says the studies just provide a snapshot in time and pointed out researchers don鈥檛 know how long microplastics may stay in the digestive tract of animals or how they may be detrimental to their health.

But it points to a need for humans to make more of an effort reduce the amount of plastic waste we produce.

鈥淭his study adds to our long list of pollutants that end up in the Arctic, and highlights the need for urgent action to stem the release of plastics and microplastics in the more densely populated south,鈥� adds Peter Ross, senior scientist at Raincoast Conservation Foundation, and co-author on the study.

The research team included scientists from 丁香园AV, Ocean Wise Conservation Association, and Fisheries and Oceans Canada, with support from the Fisheries Joint Management Committee, local hunters and trappers Committees and communities in the Inuvialuit Settlement Region.