According to an October 20, 2020 Wageningen University news release “… volunteers gathered and analysed over 150,000 items of litter found along the Meuse and the Rhine … [the results] allow researchers to gain insight into the source and distribution of plastic waste in rivers …” - The web link to the news release is included in the post on the home page of Plastic Food Packaging Waste News http://www.pfpw.news at https://pfpw.news/2020/10/22/news-briefs-10-22-20/