Seafloor litter - Composition of litter according to material categories in percent per trawl 2007/2021 v2021

This visualization product displays the marine litter material categories percentage per trawl.

EMODnet Chemistry included the collection of marine litter in its 3rd phase. Since the beginning of 2018, data of seafloor litter collected by international fish-trawl surveys 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 (OSPAR and MEDITS protocols) and reference lists used on a European scale. Moreover, within the same protocol, different gear types are deployed during fishing bottom trawl surveys.

Unlike other EMODnet seafloor litter products, all trawls surveyed since 2007 are included in this map even if the wingspread and/or the distance are unknown. Only surveys with an unknown number of items were excluded from this product.

Harmonization of the material categories between ICES and MEDITS lists has been performed and the following calculation has been applied: Material % = (?Number of items of each material category*100)/(?Number of items of all material categories)

More information on data processing and calculation are detailed in the document attached.

Warning: the absence of data on the map doesn't necessarily mean that they don't exist, but that no information has been entered in the Marine Litter Database for this area.

Identifier
Source https://data.blue-cloud.org/search-details?step=~012e88734d3-b1a9-45a8-b5ad-29d6599000a0
Metadata Access https://data.blue-cloud.org/api/collections/e88734d3-b1a9-45a8-b5ad-29d6599000a0
Provenance
Publisher Blue-Cloud Data Discovery & Access service; EMODnet Chemistry
Contributor EMODnet Chemistry; IFREMER / IDM / SISMER - Scientific Information Systems for the SEA; Ifremer / VIGIES (Information Valuation Service for Integrated Management and Monitoring); National Institute of Oceanography and Applied Geophysics - OGS, Division of Oceanography; Ifremer, VIGIES (Information Valuation Service for Integrated Management and Monitoring); IFREMER, SISMER, Scientific Information Systems for the SEA; ARPA Emilia-Romagna, Struttura Oceanografica Daphne; Atlantic Scientific Research Institute for Marine Fishery and Oceanography; Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory; DTU Aqua, National Institute of Aquatic Resources, Technical University of Denmark; IFREMER, STATION DE LORIENT; Estonian Marine Institute; Hellenic Centre for Marine Research, Institute of Oceanography (HCMR/IO); IEO, Santander Oceanographic Centre; IFREMER, CENTRE MANCHE, MER DU NORD; IFREMER, Fisheries English Channel North sea, Boulogne-sur-mer; IFREMER, STATION DE SETE; Institute for Agricultural and Fisheries Research, Animal Sciences Unit, Fisheries; Institute for Water of the Republic of Slovenia; Institute of Food Safety, Animal Health and Environment; Institute of Marine Biology (IMBK); Institute of Marine Research; Institute of Oceanography and Fisheries; ISPRA, Italian National Institute for Environmental Protection and Research, Chioggia; Marine Institute; Marine Scotland Science; Ministry of Agriculture, Fisheries Service; National Institute for Marine Research and Development "Grigore Antipa"; National Marine Fisheries Research Institute; Non-governmental environmental organization "Mare Nostrum"; Portuguese Institute for Sea and Atmosphere, I.P. (IPMA, I.P.); Swedish University of Agricultural Sciences; Thünen-Institute of Baltic Sea Fisheries (TI-OF); Wageningen Marine Research, IJmuiden
Publication Year 2024
OpenAccess true
Contact blue-cloud-support(at)maris.nl
Representation
Discipline Marine Science
Spatial Coverage (-15.837W, 36.001S, 30.565E, 61.714N)
Temporal Coverage Begin 2007-10-02T00:00:00Z
Temporal Coverage End 2021-03-16T00:00:00Z