{
    "Identifier": "490c6b11-4531-4163-b63a-f1ebaf2d6f91",
    "Last_Update": "2026-04-12T23:24:15",
    "Source": "EMODnet Chemistry",
    "Title": "Micro litter - Density per net normalized in grams per km\u00b2 - Other specific protocols 2011\/2020 v2025",
    "Abstract": "This visualization product displays the density of floating micro-litter per net normalized in grams per km\u00b2 per year from specific protocols different from research and monitoring protocols.\nEMODnet Chemistry included the collection of marine litter in its 3rd phase. Before 2021, there was no coordinated effort at the regional or European scale for micro-litter. Given this situation, EMODnet Chemistry proposed to adopt the data gathering and data management approach as generally applied for marine data, i.e., populating metadata and data in the CDI Data Discovery and Access service using dedicated SeaDataNet data transport formats. EMODnet Chemistry is currently the official EU collector of micro-litter data from Marine Strategy Framework Directive (MSFD) National Monitoring activities (descriptor 10).\nA series of specific standard vocabularies or standard terms related to micro-litter have been added to SeaDataNet NVS (NERC Vocabulary Server) Common Vocabularies to describe the micro-litter.\nEuropean micro-litter data are collected by the National Oceanographic Data Centres (NODCs). Micro-litter map products are generated from NODCs data after a test of the aggregated collection including data and data format checks and data harmonization.\n\nA filter is applied to represent only micro-litter sampled according to a very specific protocol such as the Volvo Ocean Race (VOR) or Oceaneye.\n\nDensities were calculated for each net using the following calculation:\nDensity (weight of particles per km\u00b2) = Micro-litter weight \/ (Sampling effort (km) * Net opening (cm) * 0.00001)\n\nWhen the weight of microlitters or the net opening was not filled, it was not possible to calculate the density.\n\nPercentiles 50, 75, 95 \u0026amp; 99 have been calculated taking into account data for all years.\n\nWarning: 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 National Oceanographic Data Centre (NODC) for this area.",
    "Organisations": [
        "EMODnet Chemistry",
        "IFREMER \/ IDM \/ SISMER - Scientific Information Systems for the SEA",
        "Ifremer \/ VIGIES (Information Valuation Service for Integrated Management and Monitoring)",
        "National Institute of Oceanography and Applied Geophysics - OGS, Division of Oceanography",
        "Ifremer, VIGIES (Information Valuation Service for Integrated Management and Monitoring)",
        "IFREMER, SISMER, Scientific Information Systems for the SEA",
        "Association Oceaneye",
        "Helmholtz Centre for Ocean Research Kiel (Westshore campus)"
    ],
    "Keywords": [
        "\/Human Activities\/Pollution",
        "Oceanographic geographical features",
        "Asian mainland",
        "Aegean Sea",
        "Adriatic Sea",
        "English Channel",
        "Balearic Sea",
        "Celtic Sea",
        "Tyrrhenian Sea",
        "Central Baltic Sea",
        "Lyme Bay",
        "Mediterranean Sea, Eastern Basin",
        "Bay of Biscay",
        "Ionian Sea",
        "Dover Strait",
        "Gulf of Finland",
        "Mediterranean Sea, Western Basin",
        "Gulf of Riga",
        "Northeast Atlantic Ocean (40W)",
        "Sound Sea",
        "EMODnet Chemistry",
        "Data",
        "Celtic Seas",
        "WP4 Benthic Mapping",
        "\/Environment\/Pollution",
        "Spatial data products",
        "\/Boulogne-sur-Mer\/BOL02",
        "\/Boulogne-sur-Mer\/BOL04",
        "\/Boulogne-sur-Mer\/BOL06",
        "\/Bournemouth\/BOR01",
        "\/Concepci\u00f3n\/CON06",
        "\/Kuala Lumpur\/KUL08",
        "\/La Rochelle\/LAR01",
        "\/Peniche\/PEN01"
    ],
    "Parameters": [
        "\n                  water body\n",
        "\n                  Marine litter, including Plastics\n",
        "\n                  Micro-litter in water bodies\n"
    ],
    "Bounding_Box_WestLongitude": -11.2678,
    "Bounding_Box_NorthLatitude": 59.8442,
    "Bounding_Box_EastLongitude": 36.150299,
    "Bounding_Box_SouthLatitude": 34.7062,
    "Temporal_Extent_Begin": "2011-08-31",
    "Temporal_Extent_End": "2020-12-10",
    "OnlineResourceUrl": "\/search-details?step=~012490c6b11-4531-4163-b63a-f1ebaf2d6f91"
}