Broad Habitat - Subtidal Rock (EUSeaMap2 - EUNIS) - September 2016

This map layer has been supplied directly by Marine Scotland National Marine Plan interactive. You can obtain additional information about the layer on this page

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The 2016 EUSeaMap2, produced by EMODnet Seabed Habitats was produced using a "top-down" modelling approach using classified habitat descriptors to determine a final output habitat.  Habitat descriptors (excepting Substrate) are calculated using underlying physical data and thresholds derived from statistical analyses or expert judgement on known conditions. The model is produced in Arc Model Builder (10.1). For more information on the modelling process please read the EMODnet Seabed Habitats. 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 where it is appropriate.

This layer depicts the Subtidal Rock Habitats derived from the EUSeaMap2. Subtidal rock habitats comprise bedrock, boulders and cobbles occurring below low water mark. The communities found here are strongly affected by the availability of light; shallow areas are typically dominated by seaweeds and in deeper areas below the photic zone (about 50m) communities comprise exclusively animals. Other factors influence the composition of communities including wave action, tidal stream strength and salinity.

Please cite EMODnet seabed habitats when using these data or products.

Information contained here has been derived from data that is made available under the European Marine Observation Data Network (EMODnet) Seabed Habitats project (, funded by the European Commission’s Directorate-General for Maritime Affairs and Fisheries (DG MARE).

The Data Owner and EMODnet Seabed Habitats consortium accept no liability for the use of this data or for any further analysis or interpretation of the data.

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Layer name:nmp:habitats_broad_scale_eu_seabed_map_subtidal_rock
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This Map source is referenced by the following pages: