c5ea5a629e5a872738248aec8a549991 Joint Nature Conservation Committee (JNCC), Peterborough Office habitatmapping@jncc.gov.uk 2023-10-24T09:29:14.172Z http://www.opengis.net/def/crs/EPSG/0/4326 2014 RP2771 Baseline habitat mapping of the Alde, Ore and Butley SAC GB100311 2021-06-18 GB100311 The Alde, Ore and Butley Estuaries SAC is nationally and internationally important due its populations of breeding and overwintering birds. Within the Alde, Ore and Butley Estuaries there is a range of littoral sediment and rock biotopes (the latter on sea defences) that are of high diversity and species richness for estuaries in eastern England. Water quality is excellent throughout. The area is relatively natural, being largely undeveloped by man and with very limited industrial activity. The estuary contains large areas of shallow water over subtidal sediments, and extensive mudflats and saltmarshes exposed at low water. Its diverse and species-rich intertidal sand and mudflat biotopes grade naturally along many lengths of the shore into vegetated or dynamic shingle habitat, saltmarsh, grassland and reedbed. The features associated with the Alde-Ore and Butley Estuary are subtidal sediment communities including, Mid-shore areas of mixed substrata, covered by a blanket of the ephemeral algae Ulva lactuca and Enteromorpha spp. Tide swept communities present on the low shore, where the Alde joins the Butley, featuresanemones Sagartia spp., the peacock worm Sabella pavonina, the slipper limpet Crepidula fornicata and red algae. Well-sorted mud on the low shore throughout the estuary with a range of polychaetes. Natural England Marine GI Team enquiries@naturalengland.org.uk https://gis.ices.dk/geonetwork/srv/api/records/c5ea5a629e5a872738248aec8a549991/attachments/image.png Habitats and biotopes Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme habitat biotope GEMET - Concepts, version 4.1.3 2019-01-28 no limitations to public access Available under Open Government Licence v3.0 80000 English biota oceans 1.4578 1.598 52.036 52.1613 2014-10-30 2022-10-07 ESRI Shapefile 10.3 GML 3.2.1 https://files.emodnet-seabedhabitats.eu/data/EMODnetSBHsurvey_GB100311.zip WWW:LINK-1.0-http--link EMODnet Seabed Habitats Static Download https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms OGC:WMS gb100311 View map "GB100311" through the EMODnet Seabed Habitats "Map Library" Web Map Service. https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_open_maplibrary/wfs OGC:WFS gb100311 View map "GB100311" through the EMODnet Seabed Habitats "Map Library" Web Feature Service. 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 This data set is conformant with the INSPIRE Implementing Rules for the interoperability of spatial data sets and services true Existing geophysical acoustic data were available from previous surveys, including multibeam and backscatter from Environment Agency commissioned surveys 2012-2013. The Alde and Ore also had comprehensive coverage of high resolution bathymetric and backscatter data available although the River Butley did not have any recent survey data available. In addition to the bathymetric and sidescan data for the Essex Estuaries SAC and Alde Ore and Butley Estuaries SAC, a national bathymetric dataset at a resolution of one arc second from the UKHO was employed to assist with the mapping of the areas of the SACs with no multibeam or backscatter coverage. The data for the SAC areas were extracted from the national dataset and plotted at a 25m resolution and artificially increased to 5m resolution for the Essex Estuaries and a 2m resolution for the Alde Ore and Butley Estuaries SAC which enabled the data to be combined with the higher resolution survey data which were available. The multibeam and sidescan data were compiled and processed at the highest resolution possible (5m and 2m) in order to delineate the requested features. This map was extracted from the BSH polygon layer of the Natural England Evidence Base (June 2021) and formatted by JNCC according to the EMODnet Seabed Habitats Data Exchange Format v4.1 in September 2022.