Assessing the value and challenges of using citizen-science to understand plastic pollution in the marine environment

Growing evidence suggests that anthropogenic litter, particularly plastic pollution, represents a highly pervasive and persistent threat due to its potential to cause ecological and socio-economic impacts (Beaumont et al., 2019). For example, entanglement, ingestion and the associated increased risk of exposure to chemical contaminants, seabed smothering and abrasion, spread of invasive species, and detrimental effects on human health and well-being. Understanding the abundance, distribution and composition of litter along coastlines is important for designing and implementing effective management strategies aimed at reducing future inputs. Gathering such data, however, can be expensive and time-consuming but organisations that enlist volunteers - or citizen scientists - to clean up litter and record information about its presence, are often able to resolve many of the logistical or financial constraints. Globally, the number of citizen-science litter clean-up projects appears to be increasing and it is essential that we are able to harness the evidence generated by the data they collect and hold. Currently, however, many citizen-science programmes operate independently from one another and our previous work with one organisation, the Marine Conservation Society (Nelms et al., 2017) highlighted that the data they collect are not directly comparable with other organisations due to differences in data collection methods. These differences may be due to a range of factors, such as constraints in capacity, financial restrictions or the challenges of volunteer management. For this project, we will collaborate with UK organisations using an online questionnaire survey and follow-up workshop(s) leading to a high quality, policy relevant peer-reviewed publication, to i) understand the scale of litter removal and data collection by volunteers across the UK; ii) explore the barriers citizen-science organisations face in maximising public engagement of data collection; iii) build capacity for improved data-sharing and evidence gathering throughout the sector; and iv) understand how citizen science clean-up schemes could contribute to more circular plastics economy. References: Beaumont N.J., Aanesen M, M. Austen, T. Börger, J. Clark, M. Cole, T. Hooper, P. K. Lindeque, C. Pascoe, K. Wyles (2019) Global ecological, social and economic impacts of marine plastic. Marine Pollution Bulletin 142, 189-195 Nelms SE, Coombes C, Foster LC, Galloway TS, Godley BJ, Lindeque PK, Witt MJ (2017) Marine anthropogenic litter on British beaches: a 10-year nationwide assessment using citizen science data. Science of the Total Environment. doi: 10.1016/j.scitotenv.2016.11.137