Thank you, Mr. Chair.
Thank you, everyone, for inviting me to speak. Also, thank you for the time you are giving to this issue and for your leadership.
I am Dr. Chelsea Rochman, a professor in ecology and evolutionary biology at the University of Toronto.
I've been researching the issue of plastic in our oceans and our environment for more than 10 years. I'm thrilled to have the opportunity to share my expertise with you on this important issue and to help facilitate the use of science and evidence in informing policy.
My work in this field began in the middle of the oceans, aboard the first scientific expedition to the great Pacific garbage patch. Every four hours we dropped our net in the water to quantify plastic at the surface, and 24 hours a day we had observers on the deck of a ship looking for large plastic debris. Day after day we were not seeing much by way of an island of plastic in the middle of the ocean, but on the fourth day, the observers called us all up to the bow for assistance.
On the bow of the ship were two rulers that were being used to count the debris as it went by. Here and there they counted a buoy, a drink tray, a fishing net, but all of a sudden there were too many pieces of plastic to count, and the two observers needed the eyes of many. Looking over the bow of the ship, we saw hundreds, thousands of smaller plastic pieces, smaller than your pencil eraser. This was not a garbage patch. This was a soup of microplastic. At that moment, I knew that this small plastic material could infiltrate every level of the food chain. I also knew this was not an issue of cleanup but of prevention.
Coming back to land, after going through those samples, we found plastic in every single one. We demonstrated a need to shift the conversation in how we were thinking about mitigation. We also demonstrated a need for more science.
Since this expedition about 10 years ago, I have witnessed our scientific field grow globally and expand from the oceans into fresh water, and then, of course, onto land. We've learned that microplastics are not just an ocean contaminant, but also a global contaminant. We've learned that they are found in the stomachs of animals big and small, and that this contamination extends beyond our environment into our seafood, our sea salt and our drinking water.
I have watched the scientific community expand in Canada, and we are finding that we are not immune to this widespread contamination. We find plastic debris on our shorelines, relatively large concentrations in our Great Lakes—sometimes finding more than 100 pieces of plastic per individual fish—and microplastics in the surface water, sediments and zooplankton in our Arctic.
Recently I was in Iqaluit teaching a class at the Arctic College. I walked a city block and counted hundreds of pieces of plastic littered on the roadside. Moreover, when I turn on the tap in my lab, I find microplastics in our water.
What about the effects of this plastic pollution on wildlife and humans?
Large plastic debris entangles and smothers animals and ecosystems, leading to the mortality of individual animals and changes in populations and communities of species. In my own research, I've demonstrated that microplastic can be a source of hazardous chemicals to fish and that this exposure can lead to physiological effects. Other researchers have demonstrated that microplastics can interfere with the reproductive system and lead to changes in behaviour.
Today we tend to ask questions about how microplastics in the environment impact ecosystems and how microplastics in our air, our water and our food impact human health.
A few months ago I participated in a science symposium in Ottawa hosted by CIHR and ECCC. We discussed what we know about plastic pollution and what questions we would still like to answer. Understanding the sources of plastic in our environment, where it goes when it gets there and its impact on wildlife and humans is critical. I want to stress the importance of this and the need for resources for collaborative research. This collaboration should be across Canada, but also abroad to both keep on top of the latest innovations and keep our work locally relevant here at home.
I also really want to stress that while we need more scientists—and I'm a scientist, so I will always say that—I do believe that we have enough evidence to begin to mitigate its effects now. I'll spend the rest of my time speaking about this.
Last year I co-led a paper in the journal Proceedings of the National Academy of Sciences entitled “Why we need an international agreement on marine plastic pollution”. Indeed, like many other contaminants, plastic is not constrained by borders. It migrates via the air, via water currents and in and out of parts of the ocean that are beyond our national jurisdiction. Because plastic pollution does not observe borders, I do not believe the policy should either.
At this time, there are no international agreements for plastic pollution. I do recognize that the clean seas initiative is a great first step, as well as the new initiative signed at UNEA in March this year, but I think it's time to move to something a bit more similar to the Paris Agreement, and at a faster pace. To measurably reduce emissions of plastic pollution, we need defined reduction targets, signatories, methods of reporting progress, and a global fund.
I envision an agreement whereby countries sign on as signatories with a defined reduction target. For example, in Canada we might agree to reduce 25% of our emissions by 2025. To meet these targets, we would need to come up with strategies to do it, and as we know, there is no one-size-fits-all strategy. Each country may take on its own set of unique solutions to reach its own target.
In Canada, we might adopt container deposit schemes to improve recycling rates, eliminate the use of some of the single-use plastic items that are unnecessary and not practically recyclable, improve waste collection and management infrastructure and agree to market only plastics that are recyclable or reusable in our region.
For some countries, particularly in the developing world, aid is necessary to build new infrastructure for waste, and I know that Canada has been part of contributing to this. I think it would be useful to set up a global fund similar to the Green Climate Fund. To build this, we could have some sort of extended producer responsibility or a plastic tax. For example, if we pulled in one penny on every pound of plastic produced, we would produce a fund of more than $6.8 billion per year, and growing.
Aside from international policy, what can we do right here in Canada? I think we need solutions implemented at every scale of governance, with a foundation of support for the provinces and municipalities from the federal government. This may be initiated by reclassifying plastic in the environment under CEPA to trigger new policies, maybe by considering a standard for products to have a defined percentage of post-consumer recycled content, to increase the value of recycled plastics over virgin materials. It might also mean harmonizing materials management across the country to simplify what, as you know, is currently a very complex and diverse system. Finally, although policies that mitigate large plastic debris reduce microplastics, we need to make sure that we consider microplastics when we consider all of the policy options for plastic pollution.
Policies specific to microplastics might include, but are not limited to, emissions standards for microplastics such as from washing machines, waste water or stormwater; filters on washing machines to trap microfibres; bioretention cells on storm drains; or increasing participation in Operation Clean Sweep, which might be extended to the textile industry.
With more than a decade of experience researching plastic pollution, I have a vast knowledge base on the issue. I have published many papers about the sources in the environment, where it goes once it gets there and how it impacts wildlife. I have also spent a lot of time advising managers and policy-makers in several countries. I presented at the U.S. Department of State and in front of the UN General Assembly, and I would be more than happy to stay in contact to discuss the state of the science and how it may inform policy around this view here at home and internationally.
In closing, I hope my words have expressed to you that this issue is large and urgent. The issue is also complex. The sources of plastics in the environment are diverse. The types of plastics we produce, sell and find in nature are diverse. The ecosystems and organisms this pollution contaminates are also diverse.
As a consequence, the solutions need to be diverse. There is no one-size-fits-all solution. Instead, we need a toolbox of solutions that includes plastic reduction, building a circular economy, and improved materials waste management systems, in addition to education and outreach. We also need everyone working together from multiple stakeholders.
I would like to thank you for your leadership, and I hope we continue to ride this wave of motivation and urgency—
Am I out of time?