DOI Details
- Identifier:
- 10.13120/AFE2D718-41E6-4BB4-95F5-AD836A45C891
- Creators:
- IFREMER, SISMER, Scientific Information Systems for the SEA (SISMER) https://edmo.seadatanet.org/report/486 EMODnet Chemistry
- Ifremer, VIGIES (Information Valuation Service for Integrated Management and Monitoring) https://edmo.seadatanet.org/report/1838 EMODnet Chemistry
- National Institute of Oceanography and Applied Geophysics - OGS, Division of Oceanography https://edmo.seadatanet.org/report/120 EMODnet Chemistry
- Titles:
- Seafloor litter - Density per trawl normalized per km² 2011/2021 v2021
- Publisher:
- EMODnet Chemistry
- PublicationYear:
- 2021
- Subjects:
- /Human Activities/Pollution
- Oceanographic geographical features
- Litter abundance and type
- Sea-floor litter abundance
- Black Sea
- Baltic Sea
- Mediterranean Sea
- Arctic Ocean
- Northeast Atlantic Ocean (40W)
- North Sea
- EMODnet Chemistry
- sediment
- Marine litter
- Seafloor litter
- MSFD
- Maps
- Oceanography
- Contributors:
- ARPA Emilia-Romagna, Struttura Oceanografica Daphne SeaDataNet
- Atlantic Scientific Research Institute for Marine Fishery and Oceanography SeaDataNet
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory SeaDataNet
- DTU Aqua, National Institute of Aquatic Resources, Technical University of Denmark SeaDataNet
- Environment Resources Laboratory Morbihan Pays De La Loire - Lorient SeaDataNet
- Estonian Marine Institute SeaDataNet
- Hellenic Centre for Marine Research, Institute of Oceanography SeaDataNet
- IEO, Santander Oceanographic Centre SeaDataNet
- IFREMER, Fisheries English Channel North sea, Boulogne-sur-mer SeaDataNet
- ISPRA, Italian National Institute for Environmental Protection and Research, Chioggia SeaDataNet
- Ifremer, Centre Manche, Mer du Nord SeaDataNet
- Ifremer, Station de Sete SeaDataNet
- Institute for Agricultural and Fisheries Research, Animal Sciences Unit, Fisheries SeaDataNet
- Institute for Water of the Republic of Slovenia SeaDataNet
- Institute of Food Safety, Animal Health and Environment SeaDataNet
- Institute of Marine Biology (IMBK) SeaDataNet
- Institute of Marine Research SeaDataNet
- Institute of Oceanography and Fisheries SeaDataNet
- Marine Institute SeaDataNet
- Marine Scotland Science SeaDataNet
- Ministry of Agriculture, Fisheries Service SeaDataNet
- National Institute for Marine Research and Development "Grigore Antipa" SeaDataNet
- National Marine Fisheries Research Institute SeaDataNet
- Non-governmental environmental organization "Mare Nostrum" SeaDataNet
- Portuguese Institute for Sea and Atmosphere, I.P. SeaDataNet
- Swedish University of Agricultural Sciences SeaDataNet
- Thünen-Institute of Baltic Sea Fisheries (TI-OF) SeaDataNet
- Wageningen Marine Research, IJmuiden SeaDataNet
- Dates:
- 2011-05-03/2021-03-03
- Language:
- en
- ResourceType:
- Dataset
- RelatedIdentifiers:
- https://www.emodnet-chemistry.eu/repository/maps/litter/sl_totalabundance.zip
- https://www.emodnet-chemistry.eu/products/catalogue#/metadata/afe2d718-41e6-4bb4-95f5-ad836a45c891
- https://www.emodnet-chemistry.eu/repository/images/bounding_box_afe2d718-41e6-4bb4-95f5-ad836a45c891.png
- https://www.emodnet-chemistry.eu/repository/images/spatial_distribution_afe2d718-41e6-4bb4-95f5-ad836a45c891.png
- Sizes:
- 0.917 MB
- Formats:
- application/zip including 4 files: .dbf, .prj, .shp and .shx
- Version:
- 1.0
- RightsList:
- Open Access
- Creative Commons Attribution 4.0 International: https://creativecommons.org/licenses/by/4.0/
- Public domain and freely available for all users, following the specified citation format.
- Descriptions:
- This visualization product displays the density of seafloor litter per trawl per year.<br /><br />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). <br />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.<br /><br />In cases where the wingspread and/or number of items were unknown, data could not be used because these fields are needed to calculate the density. Data collected before 2011 are affected by this filter.<br /><br />When the distance reported in the data was null, it was calculated from:<br />- the ground speed and the haul duration using this formula: Distance (km) = Haul duration (h) * Ground speed (km/h);<br />- the trawl coordinates if the ground speed and the haul duration were not filled in.<br /><br />The swept area is calculated from the wingspread (which depends on the fishing gear type) and the distance trawled:<br />Swept area (km²) = Distance (km) * Wingspread (km)<br /><br />Densities have been calculated on each trawl and year using the following computation:<br />Density (number of items per km²) = ∑Number of items / Swept area (km²)<br /><br />Percentiles 50, 75, 95 & 99 have been calculated taking into account data for all years.<br /><br />More information on data processing and calculation are detailed in the document attached.
- GeoLocations:
- European seas -15.837 30.56527 36.0013 61.7136
- FundingReferences:
- European Commission Aggregated data products are generated by EMODnet Chemistry under the support of DG MARE Call for Tenders EASME/EMFF/2016/006-lot4, EASME/2019/OP/0003-lot4.
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