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Beach litter - Median number of plastic bags related plastic items normalized per 100m & to 1 survey - EU-MSFD monitoring 2001/2023 v2025

This visualization product displays the fishing & aquaculture related plastic items abundance of marine macro-litter (> 2.5cm) per beach per year from Marine Strategy Framework Directive (MSFD) monitoring surveys.



EMODnet Chemistry included the collection 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 processings were necessary to harmonize all the data:



- Exclusion of OSPAR 1000 protocol: in order to follow the approach of OSPAR that it is not including these data anymore in the monitoring;



- Selection of MSFD surveys only (exclusion of other monitoring, cleaning and research operations);



- Exclusion of beaches without coordinates;



- Selection of plastic bags related items only. The list of selected items is attached to this metadata. This list was created using EU Marine Beach Litter Baselines, the European Threshold Value for Macro Litter on Coastlines and the Joint list of litter categories for marine macro-litter monitoring from JRC (these three documents are attached to this metadata);



- Normalization of survey lengths to 100m & 1 survey / year: in some case, the survey length was not exactly 100m, so in order to be able to compare the abundance of litter from different beaches a normalization is applied using this formula:



Number of plastic bags related items of the survey (normalized by 100 m) = Number of plastic bags related items of the survey x (100 / survey length)



Then, this normalized number of plastic bags related items is summed to obtain the total normalized number of plastic bags related items for each survey. Finally, the median abundance of plastic bags related items for each beach and year is calculated from these normalized abundances of plastic bags related items per survey.



Sometimes the survey length was null or equal to 0. Assuming that the MSFD protocol has been applied, the length has been set at 100m in these cases.



Percentiles 50, 75, 95 & 99 have been calculated taking into account plastic bags related items from MSFD data for all years.



More information is available in the attached documents.



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.

Simple

Alternate title

bl_plasticbags_monitoring

Date (Creation)
2025-02-21T00:00:00
Edition

1.0

Citation identifier
DOI:10.13120/8407f0c1-fcae-4aaa-bbec-eb82b2c6da87
Credit

EMODnet Chemistry

Point of contact

No information provided.

Point of contact

No information provided.

Thèmes Sextant

  • /Human Activities/Pollution

GEMET - INSPIRE themes, version 1.0
  • Oceanographic geographical features
Parameter Discovery Vocabulary (P02)
  • Litter abundance and type
  • Beach litter abundance
SeaVoX salt and fresh water body gazetteer
  • Northeast Atlantic Ocean (40W)
  • Black Sea
  • Baltic Sea
  • Arctic Ocean
  • Mediterranean Sea
  • North Sea
Theme
  • EMODnet Chemistry

Matrix Categories
  • sediment
EMODnet Chemistry chemical groups
  • Marine litter

Ocean Hackathon - City and challenge

  • /Boulogne-sur-Mer/BOL02

  • /Boulogne-sur-Mer/BOL04

  • /Boulogne-sur-Mer/BOL06

  • /Bournemouth/BOR01

  • /La Rochelle/LAR01

  • /Peniche/PEN01

  • /Boulogne-sur-Mer

  • /Bournemouth

  • /Brest

  • /Brest/BRE10

  • /Cherbourg

  • /La Rochelle

  • /Peniche

  • /Plymouth

  • /Toulon

Use limitation

CC BY 4.0: https://creativecommons.org/licenses/by/4.0/

Access constraints
unrestricted
Use constraints
Other restrictions
Other constraints

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/2020/3.1.11/European Marine Observation and Data Network (EMODnet) - Lot 5 - Chemistry".

Spatial representation type
Vector
Language

eng

Topic category
  • Oceans
Description

bounding box

N
S
E
W
thumbnail




Begin date
2001-01-01
End date
2023-12-24

Vertical extent

Minimum value
0
Maximum value
0.0
Reference system identifier
EPSG / WGS 84 (EPSG:4326)
Geometric object type
Point
Distribution format
Name Version
OnLine resource
Protocol Linkage Name

OGC:WMS

https://sextant.ifremer.fr/services/wms/emodnet_chemistry2

bl_totalabundance_monitoring

WWW:LINK

https://sextant.ifremer.fr/documentation/emodnet_chemistry/document/Field_description/BL_field_description_plasticbags.xlsx

Description of the layer's fields

WWW:DOWNLOAD

https://sextant.ifremer.fr/sextant_data/EMODNET/CHEMISTRY/MARINE_LITTER/2025/bl_plasticbags_monitoring.zip

Direct Download

WWW:LINK

https://emodnet.ec.europa.eu/geoviewer/

EMODnet Map Viewer

WWW:LINK

https://doi.org/10.13120/14cc-r118

Visualization products for beach litter data

WWW:LINK

https://sextant.ifremer.fr/documentation/emodnet_chemistry/document/Beachlitter_maps_items_selection_v2025.xlsx

List of selected items

WWW:LINK

https://dx.doi.org/10.2760/54369

EU Threshold Value for Macro Litter on Coastlines

WWW:LINK

https://dx.doi.org/10.2760/16903

EU Marine Beach Litter Baselines

WWW:LINK

https://dx.doi.org/10.2760/621710

Marine litter database document

WWW:LINK

https://dx.doi.org/10.2760/127473

Joint list of litter categories for marine macro-litter monitoring

DOI

https://doi.org/10.13120/8407f0c1-fcae-4aaa-bbec-eb82b2c6da87

Digital Object Identifier (DOI)

Hierarchy level
Series

Conformance result

Title

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

Date (Publication)
2010-12-08
Explanation

See the referenced specification

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

Metadata

File identifier
8407f0c1-fcae-4aaa-bbec-eb82b2c6da87 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Series
Hierarchy level name

Product record

Date stamp
2025-04-24T14:52:53.286421Z
Metadata standard name

ISO 19115:2003/19139 - EMODNET - SDN

Metadata standard version

1.0

Metadata author
Organisation name Individual name Electronic mail address Role

EMODnet Chemistry

sextant@ifremer.fr

Point of contact
 
 

Overviews

overview

Spatial extent

thumbnail

Keywords

EMODnet Chemistry
EMODnet Chemistry chemical groups

Marine litter
GEMET - INSPIRE themes, version 1.0

Oceanographic geographical features
Matrix Categories

sediment
Parameter Discovery Vocabulary (P02)

Beach litter abundance Litter abundance and type
SeaVoX salt and fresh water body gazetteer

Arctic Ocean Baltic Sea Black Sea Mediterranean Sea North Sea Northeast Atlantic Ocean (40W)
Thèmes Sextant

/Human Activities/Pollution


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