B.C. waters threatened by microplastic pollution

New research showstiny pieces of plastic could posea major threat to the waters off the B.C.coast.

In the summer of 2012, scientists from the Vancouver Aquarium and University of Victoria undertook the first survey of microplastic contamination off the B.C. coast.Their research, which was published last week in the journal Marine Pollution Bulletin, shows tiny particles of plastic averaging about a half-millimetre in sizeare pollutinglocal waters.

"[We've] seen these impact with photos of animals with their stomachs filled with plastics that are visible to the human eye. What we have not seen are pictures of the microscopic creatures at the bottom of the food chain and what plastics might be found in their bellies," saidPeter Ross, a co-author of the survey and the director of Vancouver Aquarium's new ocean pollution research program.

Ross says themicroplasticsarebeing ingested by a crucial aquatic food sourceplankton and killing them.

"It fills up the stomach and they feel like they've got a belly full of food, but they have no nutrition associated with that. It's simply a bit of plastic," said Ross.

The highest concentrations of microplastics were found in Queen Charlotte Sound and the Southern Strait of Georgia. The scientists say the likely source of the tiny pollutants is waste water, particularly from theacrylic fibres of laundry machines.

Now the question now is what impactmicroplasticswill have on salmon and other fish that survive on plankton, and how drifting debris from the 2011 tsunami in Japan could add to the problem.