Alternate title

GB100381

Date (Publication)

2018-04-30

Date (Revision)

2018-04-30

Date (Creation)

2018-04-30

Citation identifier

EMODnetSeabedHabitats / GB100381

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Defra		open@defra.gsi.gov.uk	Owner
Natural England		enquiries@naturalengland.org.uk	Custodian

GEMET - INSPIRE themes, version 1.0

• Habitats and biotopes

http://inspire.ec.europa.eu/codelist/ReferenceHabitatTypeSchemeValue

• Eunis

Use limitation

Available under the Open Government License v3.0

Use limitation

geossAttribution

Access constraints

Other restrictions

Other constraints

No limitations

Spatial representation type

Vector

Denominator

5000

Language

English

Topic category

• Biota
• Oceans

Begin date

2012-02-23

End date

2012-04-01

Reference system identifier

EPSG / WGS 84 (EPSG:4326) / 7.9

Topology level

Geometry only

Distribution format

Name	Version
ESRI Shapefile	1.0

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms?	gb100381
OGC:WFS	https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_open_maplibrary/wfs?	gb100381
WWW:LINK-1.0-http--link	https://files.emodnet-seabedhabitats.eu/data/EMODnetSBHsurvey_GB100381.zip	EMODnet Seabed Habitats download

Hierarchy level

Dataset

Statement

Multibeam echosounder data already existed for the inshore area of the Hythe Bay rMCZ, extending approximately from the Mean Low Water Springs (MLWS) contour to 1 km offshore (Kinnear, 2011). New multibeam bathymetry echosounder (MBES) and backscatter data were acquired by Titan Environmental Surveys Ltd between 23rd February and 1st April 2012. The new survey concentrated on the offshore area of the rMCZ and was conducted on the MV Titan Explorer using a pole mounted Geoacoustics GeoSwath Plus Swathe Bathymetry System. Due to operational constraints (see Titan Environmental Surveys Ltd, 2012) and the limitations of time available for survey, full acoustic data coverage across the site was not achieved. Images derived from the acoustic data are presented in Appendix 2, and the area surveyed is outlined in Figure 2. The bathymetric data were collected and processed in accordance with the International Hydrographic Organisation (IHO) Standards for Hydrographic Surveys - Order 1 (Special Publication 44, Edition 4). For further detail on the acoustic data acquisition see ÔÇÿLot 16 Hythe Bay rMCZ Acoustic Survey: End of Cruise ReportÔÇÖ (Titan Environmental Surveys Ltd, 2012).

Ground truth samples were collected from 21 stations within the Hythe Bay rMCZ. A grid spacing of 1.0 km was used to ensure sufficient sample numbers were collected from the subtidal mud BSH proposed for designation (Balanced Seas, 2011). For additional value, station positions were plotted according to the historical Hythe Bay Long Sea Outfall benthic sampling grid carried out by the Environment Agency annually between 1982 and 1993. The ground-truthing survey was carried out by the Environment Agency (EA) on the 26th March 2012 using the MV Sea Vigil. Benthic grabs were utilised at all stations to collect sediments and infauna (Figure 2; Appendix 1). An underwater camera system was not employed at this site due to the limitations of time available for survey.

Sampling was undertaken using 0.1 m2 Day Grab. On recovery, the grab was photographed and a representative sub-sample of sediment (approx. 60 ml) taken for Particle Size Analysis (PSA) using a full depth core. The remaining sample was photographed and sieved over a 1 mm mesh sieve to collect the benthic fauna. Fauna were preserved in buffered 8% formaldehyde for later processing ashore. Additionally, 10 of these stations were resampled using the Water Framework Directive (WFD) protocol (separate grab samples for benthic infauna and PSA; replicate B). For further detail on ground truth sample collection see ÔÇÿHythe Bay rMCZ Survey ReportÔÇÖ (Godsell and Meakins, in prep.).

Metadata

File identifier

d5b3b87d-7aa8-4ee7-b151-79dca8fa98fc XML

Metadata language

English

Character set

MD_CharacterSetCode_utf8

Hierarchy level

Dataset

Date stamp

2020-01-15T12:33:52

Metadata standard name

ISO19115

Metadata standard version

2003/Cor.1:2006

Metadata author

Organisation name	Individual name	Electronic mail address	Role
JNCC		HabitatMapping@jncc.gov.uk	Point of contact