By Wendy Nelson, IMA Researcher
Plastic waste pollution continues to be a significant environmental challenge for the world today. Each year, 320 million tonnes of plastic are produced, and more than 8 million tonnes of plastic end up in the ocean, largely due to land-based sources or activities. In fact, it is estimated that 80- 90% of the plastic in our seas originates from these sources or activities. In 2018, the Ocean Conservancy, the organization that coordinates the annual International Coastal Cleanup, reported that over 97 million items were collected from over 35,000 km of coastline, and the top 10 ten items collected (over 21 million in total) were plastic. Studies have shown that marine life can become entangled in, can be choked by, or can ingest plastics. Plastic debris has also been linked to increases in coral disease outbreaks- it stresses corals and can cause structural damage, thereby giving pathogens a foothold for invasion.
An emerging area of concern is that of microplastics- pieces of plastic that are smaller than 5 mm in diameter. Microplastics have been found in the stomachs of hundreds of different species from all levels of the food web, for example, whales, dolphins, seals, fish, birds, shrimp, oysters and zooplankton. In 2019, a study from a plastic- polluted site in the USA showed that one species of coral preferentially consumed microbeads (used, for example, in soaps and cosmetics) over their natural food- brine shrimp eggs. While the impacts of microplastics are not yet well understood, it is thought that they may pose a potential health risk to humans, as they can absorb and transport chemical contaminants, and are present in the human food web.
Small Island Developing States (SIDS) in the Caribbean are likely to be quite vulnerable to plastic waste pollution, as these states are small in size and have limited resources, which makes it difficult to put the necessary waste management systems in place. There are also potential economic impacts, as many of these states are dependent on fishing and tourism. It has been estimated that if the current trend continues, by the year 2050, there will be more plastics than fish in the ocean. The plastic waste crisis has also been exacerbated by the policy decision taken by China in January 2018 (China’s National Sword Policy) to stop importing plastic and other waste for recycling. This waste amounted to almost half the world’s recyclable waste and countries now have to find alternative solutions for dealing with their waste.
Last year, in response to the current global situation, the Conference of the Parties to the Basel Convention established a new working group, the Plastic Waste Partnership Working Group (PWPWG). The Basel Convention is a global environmental treaty on hazardous and other wastes, and it seeks to control the transboundary movements of hazardous wastes and their disposal. The objective of the new working group is “to improve and promote the environmentally sound management of plastic waste at the global, regional and national levels and prevent and minimize their generation so as to, among other things, reduce significantly and in the long-term eliminate the discharge of plastic waste and microplastics into the environment, in particular the marine environment”.
The first meeting of the PWPWG was held in Beau Vallon, Seychelles from 2- 5 March 2020. The meeting was hosted by the Government of the Seychelles, and was organized by the Secretariat of the Basel, Rotterdam and Stockholm Conventions, and the Africa Institute for Environmentally Sound Management of Hazardous and Other Wastes, as the Basel Convention Regional Centre for English-speaking countries in South Africa (BCRC South Africa). Canada, Japan, Norway and Switzerland provided financial support for the meeting. Representatives from the Institute of Marine Affairs, the Environmental Management Authority and the Basel Convention Regional Centre for Training and Technology Transfer for the Caribbean participated in the meeting. The purpose of the meeting was to make arrangements to operationalize and initiate the work of the Partnership. Key outcomes included the establishment of four project groups: (1) Plastic waste prevention and minimization (2) Plastic waste collection, recycling and other recovery including financing and related markets (3) Transboundary movement of plastic waste and (4) Outreach, education and awareness-raising, as well as the prioritization of activities to be undertaken by each project group.
A photography contest, which is open to the public, was launched during the workshop to promote outreach, education and awareness-raising on the global plastic waste crisis. Entries will be accepted in six categories: (1) Let’s go outside! - Plastic waste and nature (2) Plastic waste and our health and livelihoods (3) Tiny but everywhere: Microplastics (4) Let’s use it! - Plastic waste as a resource (5) Let’s do it! - Solutions for avoiding single-use plastic products and (6) Let’s fix it! - Alternatives, new technologies and innovation. The judging panel will include National Geographic Photographer, Sara Hylton, and three winners will be selected per category- one amateur adult, one professional adult and one child (under 18 years). The contest closes on 30 September 2020 and further details are available on the Basel Convention website:
Although the plastic waste crisis requires global action, the problem is not insurmountable, as the majority of land based plastic pollution that ends up in our seas is due to poor waste collection and management. It is important for each of us to take action on a personal level and practice the 5Rs- reduce, refuse, reuse, recycle and remove plastic waste, in order to protect our environment. Our environment needs all the help it can get.
Auta, H. S., Emenike, C. U., and Fauziah, S. H. (2017). Distribution and importance of microplastics in the marine environment: a review of the sources, fate, effects, and potential solutions. Environment international, 102, 165-176.
http://www.basel.int/Implementation/Plasticwastes/PWPWG1Mar2020/tabid/8305/Default.aspx). The Basel Convention Plastic Waste Partnership. Accessed 21 April 2020
GESAMP (2019). Guidelines or the monitoring and assessment of plastic litter and microplastics in the ocean (Kershaw P.J., Turra A. and Galgani F. editors), (IMO/FAO/UNESCO-IOC/UNIDO/WMO/IAEA/UN/UNEP/UNDP/ISA Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection). Rep. Stud. GESAMP No. 99.
Lamb, J.B., Willis, B.L., Fiorenza, E.A., Couch, C.S., Howard, R., Rader, D.N., True, J.D., Kelly, L.A., Ahmad, A., Jompa, J. and Harvell, C.D. (2018). Plastic waste associated with disease on coral reefs. Science, 359(6374), pp.460-462.
MacArthur, D.E., Waughray, D. and Stuchtey, M.R. (2016). The new plastics economy, rethinking the future of plastics. In World Economic Forum.
Ocean Conservancy (2019). The Beach and Beyond, International Coastal Cleanup 2019 Report. The Ocean Conservancy.
Rotjan, R.D., Sharp, K.H., Gauthier, A.E., Yelton, R., Lopez, E.M.B., Carilli, J., Kagan, J.C. and Urban-Rich, J. (2019). Patterns, dynamics and consequences of microplastic ingestion by the temperate coral, Astrangia poculata. Proceedings of the Royal Society B, 286(1905), p.20190726.