3f6f3998-91b7-4407-8b22-86885b9bbcfc eng Micka├½l VAsquez Ifremer mickael.vasquez@ifremer.fr 2026-03-11T09:08:35.1262677Z ISO 19115:2003/19139 1.0 WGS 1984 biological zones of the EU's Atlantic Area 2014-01-01T00:00:00 v1 This layer is a model of the biological zones of the EU's 'Atlantic Area 2007-2013'. It was performed within the framework of MeshAtlantic project (INTERREG ÔÇÿAtlantic Area 2007-2013ÔÇÖ program). This layer was modelled with the use of bespoke base layers that were the bathymetry, wave wavelength and the kdpar The biological zones boundaries were defined in the following way. - Infralittoral lower limit: limit at which the percentage of light reaching the seabed is 1%. The percentage of light layer was calculated by intersecting the kdpar and the bathymetry layers. For more details about this calculation see e.g. Vasquez et al. (in press). - Circalittoral lower limit: limit at which the ratio wave wave length over the depth equals 2.53 - Deep circalittoral lower limit: break of slope due to the entrance into the continental slope. This limit was digitalized with the use of the bathymetry layer - Upper slope lower limit: depth 750m - Upper bathyal lower limit: depth 1100m - Mid bathyal lower limit: depth 1800m - Lower bathyal lower limit: break of slope due to the entrance into the abyssal plain. This limit was digitalized with the use of the bathymetry layer Deep biological zones (from upper slope to abyssal) were chosen according to the classification proposed by Howell (2010). For more detail see Vasquez et al. (in press) Howell, K.L., 2010. A benthic classification system to aid in the implementation of marine protected area networks in the deep/high seas of the NE Atlantic. Biological Conservation 143, 1041ÔÇô1056. Vasquez, M., Mata Chac├│n, D., Tempera, F., OÔÇÖKeeffe, E., Galparsoro, I., Sanz Alonso, J. L., Gon├ºalves, J.M.S., Bentes, L., Amorim, P., Henriques, V., McGrath, F., Monteiro, P., Mendes, B., Freitas, R., Martins, R., Populus, J., In press. Broad-scale mapping of seafloor habitats in the north-east Atlantic using existing environmental data. Marine spatial planning Marine protected areas design Micka├½l VASQUEZ Ifremer mickael.vasquez@ifremer.fr https://gis.ices.dk/geonetwork/srv/api/records/3f6f3998-91b7-4407-8b22-86885b9bbcfc/attachments/atlatntic_s.png atlatntic_s.png https://gis.ices.dk/geonetwork/srv/api/records/3f6f3998-91b7-4407-8b22-86885b9bbcfc/attachments/atlatntic.png atlatntic.png biological zones EUNIS infralittoral circalittoral upper slope upper bathyal mid bathyal lower bathyal Abyssal Atlantic MeshAtlantic Marine habitat mapping Habitats and biotopes Oceanographic geographical features Bio-geographical regions Hydrography GEMET - INSPIRE themes, version 1.0 Data is freely available for research or commercial use providing that the originators are acknowledged in any publications produced has to be cited this way in other maps: "Source EMODnet" 1000000 eng environment 0 6000 Esri Shapefile unknown http://www.emodnet-seabedhabitats.eu/default.aspx?page=1934 WWW:LINK-1.0-http--link http://gis.ices.dk/geonetwork/srv/en/resources.get?id=600&fname=&access=private WWW:DOWNLOAD-1.0-http--download OGC:WMS-1.1.1-http-get-map