80e03f9b2fc9c4311aff5d4bb2de335c English dataset Marine GI Data Natural England Natural England +44 (0)300 060 3900 +44 (0)300 060 2356 Foss House, Kings Pool, 1-2 Peasholme Green York YO1 7PX enquiries@naturalengland.org.uk pointOfContact 2024-11-28 MEDIN Discovery metadata standard 2.3.8 urn:ogc:def:crs:EPSG::4326 2012 Natural England (NE) The Wash and North Norfolk Coast SAC - Baseline Monitoring Survey of Large Shallow Inlet and Bay 2012-03-22 publication GB100249 This report describes the results from an interdisciplinary field survey aimed at identifying the location, extent and condition of Annex I habitat features in the Large Shallow Inlet and Bay of The Wash and North Norfolk Coast SAC. The habitat features of interest are (i) subtidal boulder and cobble communities, and (ii) Sabellaria spinulosa reefs. Information presented is intended to serve as a baseline for future monitoring of the identified features. Acoustic sidescan data were acquired from selected areas within the broader SAC area, together with grountruthing samples representative of distinct acoustic signatures. Groundtruthing techniques included the acquisition of video and still images of the seabed and of sediment and faunal samples. All samples were processed according to common standards and protocols. Analysis of acoustic data revealed several distinct acoustic signatures, which have been catalogued, described and matched with the observed sedimentary conditions. Of particular interest was an area to the north of the eastern Well survey area between 10 and 47 m deep which exhibited a high density of hard and rugged features, confirmed as boulder and cobble reef on chalk bedrock by the photographic record. This area also harboured a high number of epifaunal taxa not observed in the surrounding sediments. The area has been delimited and covers approximately 470 ha. The acoustic record did not reveal the occurrence of areas of Sabellaria spinulosa reef. Infaunal samples did collect representatives of this species but in densities too small to be considered as reef. At most sites where S. spinulosa was observed, the abundance and diversity of the whole infaunal assemblage was higher than in areas where S. spinulosa was absent. Analysis of both infaunal and epifaunal assemblages revealed several distinct communities throughout the survey area. Recommendations are made on the possible alternatives for future monitoring of the area given the limitations in survey techniques that are suitable for each habitat type Cefas Data Manager Cefas Data Manager datamanager@cefas.co.uk originator Marine GI Data Natural England Natural England +44 (0)300 060 3900 +44 (0)300 060 2356 Foss House, Kings Pool, 1-2 Peasholme Green York YO1 7PX enquiries@naturalengland.org.uk custodian notPlanned Marine Environmental Data and Information Network Species distribution GEMET - INSPIRE themes, version 1.0 2008-01-06 revision Fauna abundance per unit area of the bed SeaDataNet P021 parameter discovery vocabulary 2009-11-16 revision OGL otherRestrictions OGL English biota SeaDataNet vertical extent keywords 2010-01-01 revision circalittoral SeaDataNet vertical extent keywords 2010-01-01 revision infralittoral SeaDataNet vertical extent keywords 2010-01-01 revision littoral SeaDataNet vertical extent keywords 2010-01-01 revision soil and sediment SeaDataNet vertical extent keywords 2010-01-01 revision water column 0.2157 0.7513 52.8975 53.1173 2012-01-01 2024-11-28 Marine GI Data Natural England Natural England +44 (0)300 060 3900 +44 (0)300 060 2356 Foss House, Kings Pool, 1-2 Peasholme Green York YO1 7PX enquiries@naturalengland.org.uk distributor http://gis.ices.dk/geonetwork/srv/eng/catalog.search#/metadata/0ab20f63-370e-4fd2-a454-527e94777cfd A link to the web service or dataset http://https://data.gov.uk/dataset/ca1d2861-3359-4a2d-98df-d2fab41ed21a/2013-natural-england-large-shallow-inlets-and-bays-within-the-wash-and-north-norfolk-sac A link to the general host site dataset The present investigation is intended to supplement existing datasets on the presence and condition of Annex I reef features in The Wash and North Norfolk Coast, in order to provide a robust baseline for future monitoring of these features. The features of interest in The Wash and North Norfolk Coast are (i) subtidal boulder and cobble communities, and (ii) Sabellaria spinulosa reefs.