Seafloor litter - Spatial distribution of fishing related items density normalized per km² 2011/2024 v2025
This visualization product displays the spatial distribution of fishing related items density 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 bottom trawl surveys.
In cases where the wingspread and/or number of items were/was unknown, it was not possible to use the data because these fields are needed to calculate the density. Data collected before 2011 are concerned by this filter.
When the distance reported in the data was null, it was calculated from:
- the ground speed and the haul duration using the following 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 was calculated from the wingspread (which depends on the fishing gear type) and the distance trawled:
Swept area (km²) = Distance (km) * Wingspread (km)
Densities were calculated on each trawl and year using the following computation:
Density of fishing related items (number of items per km²) = ∑Number of fishing related items / Swept area (km²)
Then a grid with 30km x 30km cells was used to calculate the weighted mean of densities in each cell from the formula :
Weighted mean (number of items per km²) = ∑ (Distance (km) * Density (number of items per km²)) / ∑ Distance (km)
Percentiles 50, 75, 95 & 99 were calculated taking into account data for all years.
More information on data processing and calculation are detailed in the attached methodology document.
Warning: the absence of data on the map does not necessarily mean that they do not exist, but that no information has been entered in the Marine Litter Database for this area.
This work is based on the work presented in the following scientific article:
O. Gerigny, M. Brun, M.C. Fabri, C. Tomasino, M. Le Moigne, A. Jadaud, F. Galgani, Seafloor litter from the continental shelf and canyons in French Mediterranean Water: Distribution, typologies and trends, Marine Pollution Bulletin, Volume 146, 2019, Pages 653-666, ISSN 0025-326X, https://doi.org/10.1016/j.marpolbul.2019.07.030.
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Alternate title | sl_spatialdistribution_fishingrelatedabundance_30km |
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Date | 2024-12-12T00:00:00+01:00 |
Date type | Creation: Date identifies when the resource was brought into existence |
Edition | 1.0 |
Unique resource identifier | DOI:10.13120/71a4164f-c862-4b46-9543-1d8ec2dac5a1 |
Credit | EMODnet Chemistry |
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Point of contact
Organisation name | IFREMER / IDM / SISMER - Scientific Information Systems for the SEA |
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Voice | +33 (0)2 98.22.49.16 |
Delivery point | IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 |
City | PLOUZANE |
Postal code | 29280 |
Country | France |
Electronic mail address | sismer@ifremer.fr |
Linkage | http://www.ifremer.fr/sismer/ |
Role | Resource provider: Party that supplies the resource |
Point of contact
Organisation name | Ifremer / VIGIES (Information Valuation Service for Integrated Management and Monitoring) |
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Voice | +33 (02 40.37.40.00 |
Delivery point | Rue de l'Ile d'Yeu BP 1105 |
City | NANTES CEDEX 03 |
Postal code | 44311 |
Country | France |
Electronic mail address | morgan.le.moigne@ifremer.fr |
Linkage | https://wwz.ifremer.fr/Recherche-Technologie/Departements-scientifiques/Departement-Oceanographie-et-Dynamique-des-Ecosystemes/VIGIES |
Role | Resource provider: Party that supplies the resource |
Point of contact
Organisation name | National Institute of Oceanography and Applied Geophysics - OGS, Division of Oceanography |
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Delivery point | Borgo Grotta Gigante 42/c |
City | Sgonico (Trieste) |
Postal code | 34010 |
Country | Italy |
Electronic mail address | nodc@ogs.trieste.it |
Linkage | http://www.ogs.trieste.it/ |
Role | Resource provider: Party that supplies the resource |
Point of contact
Organisation name | Ifremer, VIGIES (Information Valuation Service for Integrated Management and Monitoring) |
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Voice | +33 (02 40.37.40.00 |
Delivery point | Rue de l'Ile d'Yeu BP 1105 |
City | NANTES CEDEX 03 |
Postal code | 44311 |
Country | France |
Electronic mail address | morgan.le.moigne@ifremer.fr |
Linkage | https://wwz.ifremer.fr/Recherche/Departements-scientifiques/Departement-Oceanographie-et-Dynamique-des-Ecosystemes/VIGIES |
Role | Custodian: Party that accepts accountability and responsability for the data and ensures appropriate care and maintenance of the resource |
Point of contact
Organisation name | IFREMER, SISMER, Scientific Information Systems for the SEA |
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Voice | +33 (0)2 98.22.49.16 |
Delivery point | IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 |
City | PLOUZANE |
Postal code | 29280 |
Country | France |
Electronic mail address | sismer@ifremer.fr |
Linkage | http://data.ifremer.fr/SISMER |
Role | Custodian: Party that accepts accountability and responsability for the data and ensures appropriate care and maintenance of the resource |
Point of contact
Organisation name | Agriculture University of Tirana |
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Voice | +355 698593227 |
Delivery point | Kodër Kamëz, SH1 |
City | Tirana |
Postal code | 1029 |
Country | Albania |
Electronic mail address | magdacara@ubt.edu.al |
Linkage | http://www.ubt.edu.al |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | ARPA Emilia-Romagna, Struttura Oceanografica Daphne |
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Delivery point | Centro Ricerche Marine Viale Vespucci 2 |
City | Cesenatico |
Postal code | 47042 |
Country | Italy |
Linkage | http://www.arpa.emr.it/Daphne/index.asp |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory |
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Voice | +44 (0)1502 562244 |
Delivery point | Pakefield Road |
City | Lowestoft |
Postal code | NR33 OHT |
Country | United Kingdom |
Electronic mail address | datamanager@cefas.co.uk |
Linkage | http://www.cefas.co.uk/ |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | COISPA Tecnologia & Ricerca |
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Voice | +39 080 543 3596 |
Delivery point | via dei Trulli 18-20 |
City | Bari |
Postal code | 70126 |
Country | Italy |
Electronic mail address | info@coispa.eu |
Linkage | https://www.coispa.it/index.php?option=com_content&view=article&id=14:about-us&catid=11&lang=en&Itemid=124 |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | DTU Aqua, National Institute of Aquatic Resources, Technical University of Denmark |
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Voice | + 45 35 88 33 00 |
Delivery point | Kemitorvet Bygning 202 |
City | Kgs. Lyngby |
Postal code | 2800 |
Country | Denmark |
Electronic mail address | aqua@aqua.dtu.dk |
Linkage | https://www.aqua.dtu.dk/English |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Environment and Resources Authority |
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Voice | (+356) 2292 3500 |
Delivery point | Hexagon House |
City | Marsa |
Postal code | MRS 1441 |
Country | Malta |
Electronic mail address | info@era.org.mt |
Linkage | http://era.org.mt |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Estonian Marine Institute |
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Voice | +372 6 718 901 |
Delivery point | Mäealuse 14 |
City | Tallinn |
Postal code | 12618 |
Country | Estonia |
Electronic mail address | meri@sea.ee |
Linkage | http://www.sea.ee |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Hellenic Centre for Marine Research, Institute of Oceanography (HCMR/IO) |
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Voice | +30-22910-76452. -76460 |
Delivery point | 46.7 km Athinon-Souniou Av. P.O.Box 712 |
City | Anavyssos |
Postal code | 19013 |
Country | Greece |
Electronic mail address | iosecretariat@hcmr.gr |
Linkage | https://www.hcmr.gr/ |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | IEO, Santander Oceanographic Centre |
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Voice | +34 942 291 716 |
Delivery point | Promontorio San Martin, s/n |
City | Santander |
Postal code | 39004 |
Country | Spain |
Electronic mail address | ieosantander@ieo.es |
Linkage | http://www.ieo.es/santander |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | IFREMER, CENTRE MANCHE, MER DU NORD |
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Voice | +33 (0)3 21.99.56.00 |
Delivery point | IFREMER Centre de Boulogne sur Mer 150 quai Gambetta BP 70 |
City | BOULOGNE-SUR-MER CEDEX |
Postal code | 62321 |
Country | France |
Linkage | https://wwz.ifremer.fr/manchemerdunord/Environnement/LER-Boulogne-sur-Mer |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Ifremer, Environment Resources Laboratory Morbihan Pays De La Loire (Lorient) |
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Voice | +33 (0)2 97 87 38 00 |
Delivery point | Station Ifremer de Lorient 8 rue Francois Toullec |
City | LORIENT |
Postal code | 56100 |
Country | France |
Electronic mail address | Jean.Pierre.Joly@ifremer.fr |
Linkage | https://wwz.ifremer.fr/lermpl/ |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | IFREMER, Fisheries English Channel North sea, Boulogne-sur-mer |
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Voice | +33 (0)3 21 99 56 00 |
Delivery point | Centre Ifremer Manche Mer du Nord 150 quai Gambetta |
City | BOULOGNE-SUR-MER |
Postal code | 62200 |
Country | France |
Linkage | https://wwz.ifremer.fr/manchemerdunord/ |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Ifremer, Fisheries Science and Technology (Plouzane) |
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Voice | +33 (0)2 98 22 43 66 |
Delivery point | Centre Ifremer Bretagne ZI Pointe du diable CS 10070 |
City | PLOUZANE |
Postal code | 29280 |
Country | France |
Linkage | https://wwz.ifremer.fr/sciences_technologies_halieutiques |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Ifremer, Halieutic Resources of English Channel North-Sea (Port-en-Bessin) |
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Voice | +33 (0)2 31 51 56 06 |
Delivery point | Station Ifremer de Port-en-Bessin Avenue du Général de Gaulle BP 32 |
City | PORT EN BESSIN |
Postal code | 14520 |
Country | France |
Linkage | https://wwz.ifremer.fr/manchemerdunord/ |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | IFREMER, STATION DE SETE |
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Voice | +33(0)4 99 57 32 00 |
Delivery point | Bd Jean Monnet BP 171 |
City | SETE CEDEX |
Postal code | 34203 |
Country | France |
Linkage | https://wwz.ifremer.fr/mediterranee/implantations/Sete |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Institute for Water of the Republic of Slovenia |
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Voice | +386(0)14775300 |
Delivery point | Dunajska 156 |
City | Ljubljana |
Postal code | 1000 |
Country | Slovenia |
Electronic mail address | info@izvrs.si |
Linkage | http://www.izvrs.si/?lang=en |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Institute of Coastal Research, The Swedish Board of Fisheries |
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Voice | +46-(0)173-464 60 |
Delivery point | Skolgatan 6 |
City | Öregrund |
Postal code | SE-742 42 |
Country | Sweden |
Electronic mail address | fiskeriverket@slu.se |
Linkage | http://www.slu.se/kustlaboratoriet |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Institute of Marine Biology (IMBK) |
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Voice | +382 32 33 45 70 |
Delivery point | Put I Bokeljske brigade 68 |
City | Kotor |
Postal code | 85330 |
Country | Montenegro |
Electronic mail address | danijela.j@ucg.ac.me |
Linkage | https://www.ucg.ac.me/ibm/ |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Institute of Marine Research |
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Voice | +47 55 23 85 00 |
Delivery point | Nordnesgaten 50 Postboks 1870 Nordnes |
City | Bergen |
Postal code | N-5817 |
Country | Norway |
Electronic mail address | post@imr.no |
Linkage | http://www.imr.no |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Institute of Oceanography and Fisheries |
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Voice | +385 21 408000/8011 |
Delivery point | Setaliste Ivana Mestrovica 63 P.O.BOX 500 |
City | SPLIT |
Postal code | 21000 |
Country | Croatia |
Electronic mail address | office@izor.hr |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | ISPRA, Italian National Institute for Environmental Protection and Research, Chioggia |
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Country | Italy |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Marine Institute |
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Voice | +353-91-387200 |
Delivery point | Rinville |
City | Oranmore |
Postal code | H91 R673 |
Country | Ireland |
Electronic mail address | datarequests@marine.ie |
Linkage | http://www.marine.ie |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Marine Scotland Science |
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Voice | +44 (0)1224 876544 |
Delivery point | Marine Laboratory, PO Box 101 |
City | Aberdeen |
Postal code | AB11 9DB |
Country | United Kingdom |
Electronic mail address | inapplicable |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | National Institute for Marine Research and Development "Grigore Antipa" |
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Voice | 40 241 543288 |
Delivery point | 300 Mamaia Blvd. |
City | Constanta |
Postal code | 900581 |
Country | Romania |
Electronic mail address | office@alpha.rmri.ro |
Linkage | http://www.rmri.ro |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | National Marine Fisheries Research Institute |
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Voice | +48 587-356-232 |
Delivery point | Kollataja 1 |
City | Gdynia |
Postal code | 81-332 |
Country | Poland |
Electronic mail address | sekretariat@mir.gdynia.pl |
Linkage | http://www.nmfri.gdynia.pl |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Non-governmental environmental organization "Mare Nostrum" |
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Voice | +40 241 612422 |
Delivery point | 16, Bogdan Voda str. |
City | Constanta |
Country | Romania |
Electronic mail address | office@marenostrum.ro |
Linkage | https://www.marenostrum.ro/ |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Swedish University of Agricultural Sciences |
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Voice | +46-(0)18-67 10 00 |
Delivery point | Arrheniusplan 4 |
City | Uppsala |
Postal code | 750 07 |
Country | Sweden |
Electronic mail address | registrator@slu.se |
Linkage | https://www.slu.se/ |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Thünen-Institute of Sea Fisheries |
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Voice | +49 471 94460 101 |
Delivery point | Herwigstraße 31 |
City | Bremerhaven |
Postal code | 27572 |
Country | Germany |
Electronic mail address | wencke.griemsmann@thuenen.de |
Linkage | https://www.thuenen.de/en/sf/ |
Role | Originator: Party who created the resource |
Point of contact
Organisation name | Wageningen Marine Research, IJmuiden |
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Voice | +31 317480900 |
Delivery point | Haringkade 1 |
City | IJmuiden |
Postal code | 1976 CP |
Country | Netherlands |
Linkage | https://www.wur.nl/nl/Onderzoek-Resultaten/Onderzoeksinstituten/marine-research.htm |
Role | Originator: Party who created the resource |
Descriptive keywords
Thèmes Sextant | /Human Activities/Pollution |
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GEMET - INSPIRE themes, version 1.0 | |
Parameter Discovery Vocabulary (P02) |
Litter abundance and type
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Sea-floor litter abundance
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SeaVoX salt and fresh water body gazetteer |
North Sea
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Baltic Sea
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Northeast Atlantic Ocean (40W)
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Mediterranean Sea
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Arctic Ocean
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Black Sea
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Matrix Categories | sediment |
EMODnet Chemistry chemical groups | Marine litter |
Mission Atlantic - Resources | Data |
Mission Atlantic - Case Studies | Celtic Seas |
Mission Atlantic - Work Package | WP4 Benthic Mapping |
Mission Atlantic - BODC Parameters | /Environment/Pollution |
Mission Atlantic - Data type (DMP) | Spatial data products |
Ocean Hackathon - City and challenge |
/Boulogne-sur-Mer/BOL02
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/Boulogne-sur-Mer/BOL04
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/Boulogne-sur-Mer/BOL06
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/Bournemouth/BOR01
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/Concepción/CON06
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/Kuala Lumpur/KUL08
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/La Rochelle/LAR01
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/Peniche/PEN01
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/Boulogne-sur-Mer
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/Bournemouth
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/Brest
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/Cherbourg
|
/La Rochelle
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/Plymouth
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/Toulon
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GDI-Vlaanderen Trefwoorden | Metadata GDI-Vl-conform |
Other keywords | EMODnet Chemistry |
Spatial representation type | Vector: Vector data is used to represent geographic data |
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Topic category code |
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Reference System Information
Unique resource identifier | WGS 84 (EPSG:4326) |
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Codespace | EPSG |
Hierarchy level | Series: Information applies to the series |
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Lineage
Statement | The original datasets can be searched and downloaded from EMODnet Chemistry Chemistry CDI Data and Discovery Access Service: https://cdi-chemistry.seadatanet.org/search |
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Domain consistency
Conformance result
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File identifier | 71a4164f-c862-4b46-9543-1d8ec2dac5a1 | ||||||||
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Metadata language | English | ||||||||
Character set | UTF8: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 | ||||||||
Hierarchy level | Series: Information applies to the series | ||||||||
Hierarchy level name | Product record | ||||||||
Date stamp | 2025-02-27T15:33:56.095086Z | ||||||||
Metadata standard name | ISO 19115:2003/19139 - EMODNET - SDN | ||||||||
Metadata standard version | 1.0 | ||||||||
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Overviews

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