Number surveys & temporal coverage - Official monitoring

This visualization product displays the number of monitoring surveys and the associated temporal coverage per beach. EMODnet Chemistry included the gathering of marine litter in its 3rd phase. Since the beginning of 2018, data of beach litter have been gathered and processed in the EMODnet Chemistry Marine Litter Database (MLDB). The harmonization of all the data has been the most challenging task considering the heterogeneity of the data sources, sampling protocols and reference lists used on a European scale. Preliminary processing were necessary to harmonize all the data : - Exclusion of OSPAR 1000 protocol, - Separation of monitoring surveys from research & cleaning oepration - Exclusion of beaches with no coordinates - Normalization of survey lengths and the survey number per year - Some categories & some litter types have been removed More information is available in the document attached.

Number surveys & temporal coverage - Official monitoring