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  • Confidence in the classification of substrate type in the 2019 EUSeaMap broad-scale predictive habitat map. Values are on a range from 1 (Low confidence) to 3 (High confidence). Substrate type is one of the layers of information used to categorise physical habitat types in EUSeaMap; these layers of information are collectively known as 'habitat descriptors'. The substrate layer confidence was obtained from reclassification and standardisation of the confidence scores associated with each primary layer used to create the Substrate types layer. Detailed information on the modelling process for the 2016 is found in section 2.7.2 of the EMODnet Seabed Habitats technical report and its appendices (Populus et al, 2017, link in Resources). We are working on an updated report for the 2019 version. Created by the EMODnet Seabed Habitats project consortium.

  • Confidence in the classification of salinity regime in the EUSeaMap (2019) broad-scale predictive habitat map. Values are on a range from 1 (Low confidence) to 3 (High confidence). Salinity regime is one of the layers of information used to categorise physical habitat types in the Baltic Sea area of EUSeaMap; these layers of information are collectively known as 'habitat descriptors'. Confidence in the classification of salinity regime at any location is driven by both the confidence in the values of the input variables, and the confidence in the classification based on proximity to, and uncertainty in, the boundary between classes (i.e. areas closer to a boundary between two classes will have lower confidence). Layers are also available showing confidence in the values of the input variables used to model salinity regime. Created by the EMODnet Seabed Habitats project consortium.

  • Below halocline probability layer in the Baltic Sea and Kattegat strait in the North Sea/Baltic Sea., Produced by DHI as an input layer for the EUSeaMap 2019 broad-scale habitat model. Data acquired from DHI hydrographic Model MIKE III (3D baroclinic model for free surface flow), with a resolution of a 5.5 km. Detailed information is found in the EMODnet Seabed Habitats technical report: Populus J. et al 2017. EUSeaMap, a European broad-scale seabed habitat map. Ifremer. http://doi.org/10.13155/49975

  • Confidence in the 2016 EUSeaMap salinity regime class in the Baltic Sea and Kattegat strait in the North Sea/Baltic Sea, produced by EMODnet Seabed Habitats for the 2016 EUSeaMap broad-scale predictive habitat maps. Values are on a range from 1 (Low confidence) to 3 (High confidence). Confidence in salinity regime are driven by the confidence in the salinity data used to determine the descriptor, and the confidence in the threshold/margin between classes (areas closer to a boundary between two classes will have lower confidence). Detailed information on the confidence assessment in Populus J. et al 2017. EUSeaMap, a European broad-scale seabed habitat map. Ifremer. http://doi.org/10.13155/49975

  • Confidence in the 2019 EUSeaMap Biological Zone layer, produced by EMODnet Seabed Habitats for the 2019 EUSeaMap broad-scale predictive habitat maps. Values are on a range from 1 (Low confidence) to 3 (High confidence). Confidence in Biological Zone are driven by the confidence in the source data used to determine the descriptor, and the confidence in the threshold/margin between classes (areas closer to a boundary between two classes will have lower confidence). Confidence values are also available for the input data layers used to model Biological Zone. For details on methodology see Section 2.7.2 and Confidence appendix in: Populus J. et al 2017. EUSeaMap, a European broad-scale seabed habitat map. Ifremer. http://doi.org/10.13155/49975

  • Areas of high riverine inputs for EUSeaMap 2016 Biological zone model. The map cover the Adriatic Sea(Po river plume), east Mediterranean (Thessaloniki gulf and bay, the Maliakos gulf, and Geras gulf in the Aegean Sea) and the Black Sea (Dnieper-Bug river plume area). These are were handled separately in the EUSeaMap 2016 modelling process. This layer is one of several habitat descriptors used to model biological zone and habitat class. To establish the limit of these areas datasets on salinity and water temperature were used, where possible. Detailed information available in Section 2 of: Populus J. et al 2017. EUSeaMap, a European broad-scale seabed habitat map. Ifremer. http://doi.org/10.13155/49975

  • Confidence in the below halocline probability layer, produced by DHI, for the EUSeaMap 2019 broad-scale habitat model. Values are on a range from 1 (Low confidence) to 3 (High confidence). Salinity data acquired from DHI hydrographic Model MIKE III (3D baroclinic model for free surface flow), with a resolution of a 5.5 km. Detailed information is found in the EMODnet Seabed Habitats technical report: Populus J. et al 2017. EUSeaMap, a European broad-scale seabed habitat map. Ifremer. http://doi.org/10.13155/49975

  • Interim draft habitat output of the EUSeaMap2 (2015) North and Celtic Seas broad-scale predictive model, produced by EMODnet Seabed Habitats. The map was produced using a "top-down" modelling approach using the following input datasets: 1. Seabed Substrate (EMODnet Geology) 2. Bathymetry (EMODnet Bathymetry) 3. Light at the Seabed 4. Wave Base (modeled) 5. Wave energy (modelled) 6. Current energy (modelled) The model, produced in Arc Model Builder (10.1), uses datasets 2 to 4 to determine biological zone, which in combination with seabed substrate and energy data can be used to predict the physical habitat at any one location. The study followed the methodology developped within the EUSeaMap 1 project. For more details about this methodology see documents such as the EUSeaMap 1 final report (Cameron and Askew, 2011), Coltman et al., 2008, or Vasquez et al., 2015 The model was created using raster input layers with a cell size of 0.002dd (roughly 250 meters). The model includes the sublittoral zone only; due to the high variability of the littoral zone, a lack of detailed substrate data and the resolution of the model, it is difficult to predict littoral habitats at this scale. The map follows the EUNIS 2007-11 classification system, supplemented by additional categories in deep sea areas and in areas lacking full data. References: Cameron, A., Askew, N. (eds.), 2011. EUSeaMap - Preparatory Action for development and assessment of a European broad-scale seabed habitat map final report. URL: http://jncc.gov.uk/euseamap Coltman, N., Golding, N., Verling, E., 2008. Developing a broadscale predictive EUNIS habitat map for the MESH study area. 16 pp. URL: http://www.searchmesh.net/pdf/MESH%20EUNIS%20model.pdf Vasquez, M., Mata Chacón, D., Tempera, F., O’Keeffe, E., Galparsoro, I., Sanz Alonso, J.L., Gonçalves, J.M.S., Bentes, L., Amorim, P., Henriques, V., McGrath, F., Monteiro, P., Mendes, B., Freitas, R., Martins, R., Populus, J., 2015. Broad-scale mapping of seafloor habitats in the north-east Atlantic using existing environmental data. Journal of Sea Research, MeshAtlantic: Mapping Atlantic Area Seabed Habitats for Better Marine Management 100, 120–132. doi:10.1016/j.seares.2014.09.011

  • Classified seabed substrate types (Polygon layer) for European seas. Produced by EMODnet Seabed Habitats as an input layer for the 2016 EUSeaMap broad-scale habitat model and re-used for EUSeaMap 2019, based on EMODnet Geology seabed substrate products. The extent of the mapped area includes the Mediterranean Sea, Black Sea, Baltic Sea, and areas of the North Eastern Atlantic extending from the Canary Islands in the south to Norway in the North. The layer of seabed substrate was produced using data from EMODnet geology 1:250.000 and 1:1M seabed substrate maps, and integrated with extra substrate feature relevant for habitat mapping (seagrass beds, for example). The Folk 5 classification of substrate is adopted because it is compatible with the EUNIS classification of habitats used in EUSeaMap 2016. For details on methodology see Section 2 of: Populus J. et al 2017. EUSeaMap, a European broad-scale seabed habitat map. Ifremer. http://doi.org/10.13155/49975

  • Confidence in the PAR at seabed values, produced by EMODnet Seabed Habitats for the 2016 EUSeaMap broad-scale predictive habitat maps. Values are on a range from 1 (Low confidence) to 3 (High confidence). Confidence in Photosynthetically Active Radiation (PAR) at the seabed are driven by the confidence in the underlying data used to determine the descriptor (PAR at the surface, light attenuation coefficient KD(PAR) and depth to the seabed.) and the confidence in the threshold/margin between classes (areas closer to a boundary between two classes will have lower confidence). Detailed information on the confidence assessment in Populus J. et al 2017. EUSeaMap, a European broad-scale seabed habitat map. Ifremer. http://doi.org/10.13155/49975