{
    "Identifier": "148234c3-3380-4aad-b7c8-aca282e5ad15",
    "Last_Update": "2026-04-12T23:24:15",
    "Source": "EMODnet Chemistry",
    "Title": "Micro litter - Density per net normalized per km\u00b2 - Research and monitoring protocols 2011\/2023 v2025",
    "Abstract": "This visualization product displays the density of floating micro-litter per net normalized per km\u00b2 per year 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 research and monitoring protocols as MSFD monitoring.\n\nDensities were calculated for each net using the following calculation:\nDensity (number of particles per km\u00b2) = Micro-litter count \/ (Sampling effort (km) * Net opening (cm) * 0.00001)\n\nWhen information about the sampling effort (km) was lacking and point coordinates were known (start and end of the sampling), the sampling effort was calculated using the PostGIS ST_DistanceSpheroid function with a WGS84 measurement spheroid.\nWhen the number of micro-litters 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",
        "ARPA Abruzzo",
        "ARPA Basilicata",
        "ARPA Calabria",
        "ARPA Campania",
        "ARPA Emilia-Romagna, Struttura Oceanografica Daphne",
        "ARPA Friuli-Venezia Giulia, Alto Adriatico Observatory",
        "ARPA Lazio",
        "ARPA Liguria",
        "ARPA Marche",
        "ARPA Molise",
        "ARPA Puglia",
        "ARPA Sardegna",
        "ARPA Sicilia",
        "ARPA Toscana, Area tutela ambiente marino",
        "ARPA Veneto, Osservatorio Regionale Acque",
        "Department of Marine Systems at Tallinn University of Technology",
        "Hellenic Centre for Marine Research, Institute of Oceanography",
        "Ifremer, Environment Resources Laboratory Provence Azur Corsica (La Seyne-sur-Mer)",
        "Ifremer, Fisheries Science and Technology (Plouzane)",
        "Institute for Water of the Republic of Slovenia",
        "Institute of Marine Sciences, Middle East Technical University",
        "Istanbul University, Institute of Marine Science and Management",
        "Latvian Institute of Aquatic Ecology",
        "Planete Urgence",
        "IFREMER, STATION DE SETE",
        "Ifremer, LERLR - Labo Environnement Ressources Languedoc-Roussillon",
        "IFREMER, Fisheries English Channel North sea (Boulogne-sur-mer)",
        "Hydrographic and oceanographic service of the French navy"
    ],
    "Keywords": [
        "\/Human Activities\/Pollution",
        "Oceanographic geographical features",
        "Central Baltic Sea",
        "Balearic Sea",
        "Celtic Sea",
        "Gulf of Finland",
        "Lyme Bay",
        "Mediterranean Sea, Western Basin",
        "Adriatic Sea",
        "Aegean Sea",
        "Dover Strait",
        "Asian mainland",
        "English Channel",
        "Bay of Biscay",
        "Tyrrhenian Sea",
        "Northeast Atlantic Ocean (40W)",
        "Ionian Sea",
        "Gulf of Riga",
        "Mediterranean Sea, Eastern Basin",
        "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": "2011-06-14",
    "Temporal_Extent_End": "2023-07-23",
    "OnlineResourceUrl": "\/search-details?step=~012148234c3-3380-4aad-b7c8-aca282e5ad15"
}