afe2d718-41e6-4bb4-95f5-ad836a45c891 Product record EMODnet Chemistry sextant@ifremer.fr http://www.emodnet.eu/chemistry 2025-07-29T15:07:56.99324Z ISO 19115:2003/19139 - EMODNET - SDN 1.0 WGS 84 (EPSG:4326) EPSG Seafloor litter - Density per trawl normalized per km² 2011/2021 v2021 sl_totalabundance 2021-06-28 1.0 DOI:10.13120/afe2d718-41e6-4bb4-95f5-ad836a45c891 This visualization product displays the density of seafloor litter 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. 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. When the distance reported in the data was null, it was calculated from: - the ground speed and the haul duration using this formula: Distance (km) = Haul duration (h) * Ground speed (km/h); - the trawl coordinates if the ground speed and the haul duration were not filled in. The swept area is calculated from the wingspread (which depends on the fishing gear type) and the distance trawled: Swept area (km²) = Distance (km) * Wingspread (km) Densities have been calculated on each trawl and year using the following computation: Density (number of items per km²) = ∑Number of items / Swept area (km²) Percentiles 50, 75, 95 & 99 have been calculated taking into account data for all years. 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. EMODnet Chemistry IFREMER / IDM / SISMER - Scientific Information Systems for the SEA +33 (0)2 98.22.49.16 +33 (0)2 98.22.46.44 IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 PLOUZANE 29280 France sismer@ifremer.fr http://www.ifremer.fr/sismer/ web site Ifremer / VIGIES (Information Valuation Service for Integrated Management and Monitoring) +33 (02 40.37.40.00 +33 (0)2 40.37.40.01 Rue de l'Ile d'Yeu BP 1105 NANTES CEDEX 03 44311 France morgan.le.moigne@ifremer.fr https://wwz.ifremer.fr/Recherche-Technologie/Departements-scientifiques/Departement-Oceanographie-et-Dynamique-des-Ecosystemes/VIGIES web site National Institute of Oceanography and Applied Geophysics - OGS, Division of Oceanography Borgo Grotta Gigante 42/c Sgonico (Trieste) 34010 Italy nodc@ogs.trieste.it http://www.ogs.trieste.it/ web site Ifremer, VIGIES (Information Valuation Service for Integrated Management and Monitoring) +33 (02 40.37.40.00 +33 (0)2 40.37.40.01 Rue de l'Ile d'Yeu BP 1105 NANTES CEDEX 03 44311 France morgan.le.moigne@ifremer.fr https://wwz.ifremer.fr/Recherche/Departements-scientifiques/Departement-Oceanographie-et-Dynamique-des-Ecosystemes/VIGIES web site IFREMER, SISMER, Scientific Information Systems for the SEA +33 (0)2 98.22.49.16 +33 (0)2 98.22.46.44 IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 PLOUZANE 29280 France sismer@ifremer.fr http://data.ifremer.fr/SISMER web site ARPA Emilia-Romagna, Struttura Oceanografica Daphne Centro Ricerche Marine Viale Vespucci 2 Cesenatico 47042 Italy http://www.arpa.emr.it/Daphne/index.asp web site Atlantic Scientific Research Institute for Marine Fishery and Oceanography 8 (0112) 21-56-45 8 (0112) 21-99-97 5, Dm. Donskoi St. Kaliningrad reg 236000 Russian Federation atlant@baltnet.ru http://atlantniro.ru/ web site Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory +44 (0)1502 562244 Pakefield Road Lowestoft NR33 OHT United Kingdom datamanager@cefas.co.uk http://www.cefas.co.uk/ web site DTU Aqua, National Institute of Aquatic Resources, Technical University of Denmark + 45 35 88 33 00 Kemitorvet Bygning 202 Kgs. Lyngby 2800 Denmark aqua@aqua.dtu.dk https://www.aqua.dtu.dk/English web site IFREMER, STATION DE LORIENT +33 (0)2 97 87 38 00 +33 (0)2 97 87 38 01 8 rue François Toullec LORIENT 56100 France secretariat@ifremer.fr web site Estonian Marine Institute +372 6 718 901 +372 6 718 900 Mäealuse 14 Tallinn 12618 Estonia meri@sea.ee http://www.sea.ee web site Hellenic Centre for Marine Research, Institute of Oceanography (HCMR/IO) +30-22910-76452. -76460 +30-22910-76347 46.7 km Athinon-Souniou Av. P.O.Box 712 Anavyssos 19013 Greece iosecretariat@hcmr.gr https://www.hcmr.gr/ web site IEO, Santander Oceanographic Centre +34 942 291 716 +34 942 275 072 Promontorio San Martin, s/n Santander 39004 Spain ieosantander@ieo.es http://www.ieo.es/santander web site IFREMER, CENTRE MANCHE, MER DU NORD +33 (0)3 21.99.56.00 +33 (0)3 21.99.56.01 IFREMER Centre de Boulogne sur Mer 150 quai Gambetta BP 70 BOULOGNE-SUR-MER CEDEX 62321 France https://wwz.ifremer.fr/manchemerdunord/Environnement/LER-Boulogne-sur-Mer web site IFREMER, Fisheries English Channel North sea, Boulogne-sur-mer +33 (0)3 21 99 56 00 +33 (0)3 21 99 56 01 Centre Ifremer Manche Mer du Nord 150 quai Gambetta BOULOGNE-SUR-MER 62200 France https://wwz.ifremer.fr/manchemerdunord/ web site IFREMER, STATION DE SETE +33(0)4 99 57 32 00 +33 (0)4 99 57 32 94 Bd Jean Monnet BP 171 SETE CEDEX 34203 France https://wwz.ifremer.fr/mediterranee/implantations/Sete web site Institute for Agricultural and Fisheries Research, Animal Sciences Unit, Fisheries +32 59 34 22 50 +32 59 33 06 29 Ankerstraat 1 Oostende 8400 Belgium DierVI@ilvo.vlaanderen.be http://www.ilvo.vlaanderen.be/ web site Institute for Water of the Republic of Slovenia +386(0)14775300 Dunajska 156 Ljubljana 1000 Slovenia info@izvrs.si http://www.izvrs.si/?lang=en web site Institute of Food Safety, Animal Health and Environment +371 67620513 +371 67620434 Lejupes Street 3, Riga, LV-1076 Riga LV-1076 Latvia bior@bior.gov.lv http://www.bior.gov.lv/en web site Institute of Marine Biology (IMBK) +382 32 33 45 70 +382 32 33 45 70 Put I Bokeljske brigade 68 Kotor 85330 Montenegro danijela.j@ucg.ac.me https://www.ucg.ac.me/ibm/ web site Institute of Marine Research +47 55 23 85 00 +47 55 23 85 31 Nordnesgaten 50 Postboks 1870 Nordnes Bergen N-5817 Norway post@imr.no http://www.imr.no web site Institute of Oceanography and Fisheries +385 21 408000/8011 +385 21 358650 Setaliste Ivana Mestrovica 63 P.O.BOX 500 SPLIT 21000 Croatia office@izor.hr web site ISPRA, Italian National Institute for Environmental Protection and Research, Chioggia Italy Marine Institute +353-91-387200 +353-91-387201 Rinville Oranmore H91 R673 Ireland datarequests@marine.ie http://www.marine.ie web site Marine Scotland Science +44 (0)1224 876544 +44 (0)1224 295511 Marine Laboratory, PO Box 101 Aberdeen AB11 9DB United Kingdom inapplicable web site Ministry of Agriculture, Fisheries Service +370 46 310660 Naujoji uosto street 8A Klaipeda Lithuania info@zuv.lt http://zuv.lt/ web site National Institute for Marine Research and Development "Grigore Antipa" 40 241 543288 40 241 831274 300 Mamaia Blvd. Constanta 900581 Romania office@alpha.rmri.ro http://www.rmri.ro web site National Marine Fisheries Research Institute +48 587-356-232 Kollataja 1 Gdynia 81-332 Poland sekretariat@mir.gdynia.pl http://www.nmfri.gdynia.pl web site Non-governmental environmental organization "Mare Nostrum" +40 241 612422 16, Bogdan Voda str. Constanta Romania office@marenostrum.ro https://www.marenostrum.ro/ web site Portuguese Institute for Sea and Atmosphere, I.P. (IPMA, I.P.) Portugal Swedish University of Agricultural Sciences +46-(0)18-67 10 00 +46-(0)18-67 20 00 Arrheniusplan 4 Uppsala 750 07 Sweden registrator@slu.se https://www.slu.se/ web site Thünen-Institute of Baltic Sea Fisheries (TI-OF) +49-381 811 61-00 +49-381 811 61-99 Alter Hafen Süd 2 Rostock 18069 Germany of@ti.bund.de web site Wageningen Marine Research, IJmuiden +31 317480900 Haringkade 1 IJmuiden 1976 CP Netherlands https://www.wur.nl/nl/Onderzoek-Resultaten/Onderzoeksinstituten/marine-research.htm web site https://sextant.ifremer.fr/documentation/emodnet_chemistry/images/2021/sl_totalabundance.png /Human Activities/Pollution Thèmes Sextant 2023-03-16 geonetwork.thesaurus.local.theme.sextant-theme Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2018-07-27T14:39:48 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme Sea-floor litter abundance Litter abundance and type Parameter Discovery Vocabulary (P02) 2021-04-07 geonetwork.thesaurus.external.parameter.NVS.P02 Northeast Atlantic Ocean (40W) North Sea Black Sea Arctic Ocean Baltic Sea Mediterranean Sea SeaVoX salt and fresh water body gazetteer 2021-04-07 geonetwork.thesaurus.external.reference-geographical-area.NVS.C19 EMODnet Chemistry sediment Matrix Categories 2021-04-07 geonetwork.thesaurus.external.parameter.NVS.L04 Marine litter, including Plastics EMODnet Chemistry chemical groups 2021-04-07 geonetwork.thesaurus.external.parameter.NVS.P36 Data Mission Atlantic - Resources 2021-12-08 geonetwork.thesaurus.local.theme.mission-atlantic-resources Celtic Seas Mission Atlantic - Case Studies 2021-11-30 geonetwork.thesaurus.local.theme.mission-atlantic-case-studies WP4 Benthic Mapping Mission Atlantic - Work Package 2021-08-10 geonetwork.thesaurus.local.theme.mission-atlantic-work-package /Environment/Pollution Mission Atlantic - BODC Parameters 2021-05-04 geonetwork.thesaurus.local.theme.mission-atlantic-bodc-parameters Spatial data products Mission Atlantic - Data type (DMP) 2021-11-30 geonetwork.thesaurus.local.theme.mission-atlantic-data-type CC BY 4.0: https://creativecommons.org/licenses/by/4.0/ Usage is subject to mandatory citation: "This resource was generated in the framework of EMODnet Chemistry, under the support of DG MARE Call for Tender EASME/EMFF/2018/1.3.1.8 - lot4." eng oceans bounding box -15.837 30.56527 36.0013 61.7136 2011-05-03 2021-03-03 -5500.0 0.0 https://doi.org/10.6092/EF4901D2-642A-4881-BA81-6B2607F5485E WWW:LINK Visualization products for Beach and Seafloor Litter data Methodologies applied to create the maps https://dx.doi.org/10.6092/15c0d34c-a01a-4091-91ac-7c4f561ab508 WWW:LINK Guidelines and forms for gathering marine litter data Guidelines and forms for gathering marine litter data https://sextant.ifremer.fr/documentation/emodnet_chemistry/document/Field_description/SL_field_description_totalabundance.xlsx WWW:LINK Description of the layer's fields Description of the layer's fields https://doi.org/10.13120/afe2d718-41e6-4bb4-95f5-ad836a45c891 DOI Digital Object Identifier (DOI) https://sextant.ifremer.fr/sextant_data/EMODNET/CHEMISTRY/MARINE_LITTER/2021/sl_totalabundance.zip WWW:DOWNLOAD Direct Download Direct Download https://emodnet.ec.europa.eu/geoviewer/ WWW:LINK EMODnet Map Viewer EMODnet Map Viewer COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 See the referenced specification The data used as input for this product have been extracted from the EMODnet Chemistry Download Service: https://emodnet-chemistry.maris.nl/search