7a7509de-53d5-4472-a1e9-f5857316d034 English HELCOM Secretariat data@helcom.fi 2021-09-09T11:41:04 EPSG:3035 Reefs 1170 (HOLAS 2) 2016-04-06 https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/7a7509de-53d5-4472-a1e9-f5857316d034 Reefs (according to Habitats Directive Annex I) are hard compact substrata (either biogenic or geogenic) on solid and soft bottoms, which arise from the seafloor in the sublittoral and littoral zone. Distribution of mapped Natura 2000 habitat “Reefs” based on data submission by HELCOM contracting parties. Most of the submitted data is based on modelling and limited ground-truthing. Data coverage, accuracy and the methods in obtaining the data vary between countries. HELCOM Secretariat data@helcom.fi Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme marine geology GEMET 2018-08-16 geonetwork.thesaurus.external.theme.gemet-en MADS HOLAS2 ecosystem component Biodiversity Use constraints: Data can be used freely given that the source is cited as "HELCOM HOLAS II Dataset: Natura 2000 habitats: Reefs (1170) (2017)". Access constraints: No limitations on public access. English environment 7.530495 34.131647 52.277123 66.475422 2011-01-01 2016-12-31 TIFF https://maps.helcom.fi/website/MADS/download/?id=7a7509de-53d5-4472-a1e9-f5857316d034 WWW:LINK-1.0-http--link Download dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 Data source: Denmark: Polygon data on reefs found within Natura 2000 sites. Source: Danish Nature Agency. Estonia: Modelled distribution of reefs based on observations from national monitoring and inventories. Source: Estonian Marine Institute. Finland: Modelled distribution of potential reefs. Source: Finnish Environment Institute. Germany: Polygon data on reef distribution. Sources: Landesamt für Landwirtschaft, Umwelt und ländliche Räume Schleswig-Holstein and Landesamt für Umwelt, Naturschutz und Geologie Mecklenburg-Vorpommern. Latvia: Modelled distribution of reefs, substrate not confirmed. Source: Latvian Institute of Aquatic Ecology Lithuania: Distribution of reefs defined based on Mytilus distribution. Source: Klaipeda University Poland: Distribution of reefs according to Habitats Directive Art. 17 Report (2007-2012). 10km grid cells. Source: General Directorate for Environmental Protection. Russia: Habitats Directive not implemented. Sweden: Polygon data on reefs, including also reefs of biogenic origin. Does not cover the whole Swedish marine area (covers Västernorrland, Södermanland, Östergötland, Blekinge and Skåne counties). Source: Swedish Agency for Marine and Water Management (HaV). Data quality: Data quality and habitat definitions vary between countries. Data is often based on modelling and ground-truthing has not always taken place. The dataset was approved by all HELCOM Contracting Parties in the HOLAS II Ecosystem component data review process during first quarter of 2017 after corrections from Germany and Poland. Attribute information: Raster value representing presence (1) or absence (0) of reefs.