1 Data information

This visualisation product displays plastic bags density per trawl per year. EMODnet Chemistry included the gathering 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. Densities have been calculated on each trawl and year using the following computation: Density of plastic bags (number of items per Km^2) = (total number of fishing related items)/(Swept area) Percentiles 50, 75 & 95 have been calculated taking into account data from all years. Plastic bags reference codes taken into account for this product and information on data processing and calculation are detailed in the following document p22.: https://www.emodnet-chemistry.eu/repository/20190321_EMODnet_Beach_Seabed_ML_Products.pdf

1.1 Metadata

Access metadata from landing page

1.2 Interactive map

Visualise and access data with Openlayer

2 Geographical extent

2.1 Coordinates

## [1] "West-Longitude: -0.9"
## [1] "South-Latitude: 49.1"
## [1] "East-Longitude: 0.9"
## [1] "North-Latitude: 49.9"

2.2 Defined area

Map tiles by Stamen Design, under CC BY 3.0. Data by OpenStreetMap, under ODbL.

3 Seabed litter - Plastic bags density

3.1 Access data

The Web Feature Service (WFS) of the EMODnet Chemistry portal allows collecting the data:
https://www.ifremer.fr/services/wfs/emodnet_chemistry2?service=WFS&request=GetCapabilities&version=1.1.0

Available labels:

##  [1] "msGeometry"              "id"                     
##  [3] "country_name"            "survey_id"              
##  [5] "surveyname"              "ship_name"              
##  [7] "gear"                    "gear_description"       
##  [9] "stno"                    "haulno"                 
## [11] "surveyyear"              "year"                   
## [13] "ltref"                   "littergroup"            
## [15] "littercount_by_squarekm"


Download data for the defined geographical extent:

Excel file Geographic information
csv geojson

3.2 Map

3.3 Table

The following table displays only a maximum of 10 columns and coordinates. To access the complete data, download the csv or json file.

id country_name survey_id surveyname ship_name gear surveyyear year ltref littergroup geometry lat
303 France 52996 NS-IBTS Thalassa (new) GOV 2017-01-01 00:00:00 2017 ICES Plastic bags c(0.411, 49.8749) 0.41100
517 France 53981 NS-IBTS Thalassa (new) GOV 2014-01-01 00:00:00 2014 ICES Plastic bags c(0.40445, 49.87445) 0.40445
581 France 54297 FR-CGFS Thalassa (new) GOV 2016-01-01 00:00:00 2016 ICES Plastic bags c(0.18285, 49.84345) 0.18285
698 France 54788 FR-CGFS Thalassa (new) GOV 2016-01-01 00:00:00 2016 ICES Plastic bags c(0.0715, 49.63215) 0.07150
747 France 54990 FR-CGFS Thalassa (new) GOV 2017-01-01 00:00:00 2017 ICES Plastic bags c(0.39955, 49.873) 0.39955

3.4 Map with id