We use cookies to provide you with the best experience on our website. No personal information is stored. If you continue without changing your cookie settings, we'll assume that you are happy to receive all cookies on the website. Please refer to our privacy statement for further information on our cookies.


Countryside Council for Wales (CCW) home page | Sponsored by Welsh Assembly Government NRW Logo

Countryside Council for Wales
Landscape & wildlife Please note - A new body, Natural Resources Wales has taken over all functions and services previously carried out by Countryside Council for Wales. While the Natural Resources Wales website continues to be developed, some online services will continue to be provided on this web site.

Data collation

A major part of the HABMAP project was to develop a model that used physical characteristics to predict the biological community (biotope) on the seabed. (A biotope is a combination of the physical characteristics of the seabed and the group of species living there.) This was a four stage process that involved collating physical and biological data, developing a model, testing the model, and validating the outputs. This was a new approach to mapping seabed habitats in the southern Irish Sea.

HABMAP modelling work was carried out during two project phases. The original INTERREG funded project took place between 2004 and 2007, and a second extension phase took place between 2007 and 2010. The extension project aimed to refine the modelling work over an extended project area that covered all of Welsh waters. Input datasets used in both the original and extension projects are displayed below.

Data was collated for the following physical factors:

  • Seabed bathymetry
  • Seabed sediment type
  • Bedstate
  • Seabed temperature
  • Seabed salinity
  • Wave induced bed-sheer stress
  • Tidally induced bed-sheer stress
  • Light attenuation

2007 Collation Maps

Bathymetry profile throughout the HABMAP project study area. Derived from DIGBATH250 under DIGBATH250 License (2003/053 DB) British Geological Survey © NERC (as used in the original HABMAP study).

Bedform layer for the southern Irish Sea showing ripple, wave and bank features (as used in the original HABMAP study).

Mean Light Attenuation throughout the HABMAP study area derived from ocean colour observations made by the SeaWiFs satellite (as used in the original HABMAP study).

Maximum seabed temperature distribution throughout the HABMAP project study area derived from outputs from the ECOMSED model (Dabrowski, 2005) (as used in the original HABMAP study).

Minimum seabed temperature distribution throughout the HABMAP project study area derived from outputs from the ECOMSED model (Dabrowski, 2005) (as used in the original HABMAP study).

Mean salinity values throughout the HABMAP project study area (as used in the original HABMAP study).

Maximum tidally-induced bed sheer stress throughout the HABMAP project study area (as used in the original HABMAP study), derived from datasets provided by ABPmer (Delft3D FLOW modelling), and Professor Elliott (Bangor University).

Maximum wave-induced bed sheer stress (Nm-2) throughout the HABMAP project study area derived from SWAN modelling (as used in the original HABMAP study).

HABMAP Seabed Sediment map (as used in the original HABMAP study), based on the BGS Irish Sea Sediment map. (Portions of this figure have been reproduced from the British Geological Survey map data at the original scale of 1:250,000. Licence 2007/067 British Geological Survey. © NERC. All rights reserved). © Crown copyright. All rights reserved. Countryside Council for Wales, 100018813 [2007].

Much of this data was supplied to the project under strict licence conditions, so we may not be able to provide the datasets to other individuals/organisations. Full details of the datasets used by the project can be found in the HABMAP reports.

Biological (biotope) data was also collated from a variety of sources. Some of this data was supplied under licence conditions but most was collected by public bodies and will soon be available to download.

A Geographical Information System containing data for the HABMAP area for all of the datasets listed above has been created.

2010 Collation Maps

Bathymetry profile throughout the HABMAP project study area, derived from SeaZone Hydrospatial data (© British Crown and SeaZone Solutions Limited. All rights reserved. Products Licence No. 042006.002) and the BGS DIGBATH250 dataset (supplied under License 2003/053 DB; British Geological Survey © NERC).

Mean light attenuation depth (to 1% of surface light) throughout the HABMAP study area, derived from ocean colour observations made by the SeaWiFs satellite (supplied under license to CCW by the Proudman Oceanographic Laboratory).

Maximum seabed temperature distribution throughout the extended HABMAP project study area, derived from Met Office data.

Minimum seabed temperature distribution throughout the extended HABMAP project study area, derived from Met Office data.

Mean seabed salinity values throughout the extended HABMAP study area, derived from point data supplied by ICES, the Environment Agency and the Marine Institute.

HABMAP Seabed Sediment map, based on the BGS Irish Sea Sediment map. (Portions of this figure have been reproduced from the British Geological Survey map data at the original scale of 1:250,000. Licence 2007/067 British Geological Survey. © NERC. All rights reserved). © Crown copyright. All rights reserved. Countryside Council for Wales, 100018813 [2007].

Maximum tidally-induced bed sheer stress throughout the HABMAP project study area, derived from modelled data supplied by ABPmer and the British Oceanographic Data Centre.

Maximum wave-induced bed sheer stress (Nm-2) throughout the HABMAP project study area derived from SWAN modelling (Ireland) and reconstructed ProWAM modelling (Wales).

Seabed bathymetry

The British Geological Survey Irish Sea Bathymetry (DIGIBATH 250) dataset was used for the original project. This graded depths at 10m intervals throughout the study area. The dataset (the 0-10m band) was extended to meet the project coastline boundary where this was not already the case. This dataset was supplied under licence conditions. For more details see http://www.bgs.ac.uk/products/digbath250/.

For the extended project the SeaZone Hydrospatial bathymetry dataset was used with additional data from multibeam surveys incorporated where available.

Seabed sediment type

This dataset used a combination of British Geological Survey data and maps derived from sediment data collected with biological surveys. Where possible maps were created that split mixtures of mud, sand, gravel and stones into a finer set of categories than offered by the Folk scale used in the BGS maps. The BGS maps were supplied under licence conditions. For more details see http://www.bgs.ac.uk/products/digitalmaps/seabed.html.

Bedstate

Bedstate data was compiled by the HABMAP project from a variety of sources. However, these were not used in the final mapping project.

Seabed temperature

The seabed temperatures used within the original HABMAP project were based on modelled data provided to the project by Tomasz Dabrowski from the National University of Ireland, Galway (Dabrowski, T., 2005. A flushing study analysis of selected Irish waterbodies. PhD Thesis. Civil Engineering Department, National University of Ireland, Galway. 411 pp.).

For the extension project Met Office data were used.

Seabed salinity

Point salinity values supplied by the Marine Institute and ICES were interpolated into a continuous salinity grid for the study area during the original project. (The raw data can be downloaded from the respective organisation’s websites).

Additional data covering the Dee and Severn Estuaries was supplied by the Environment Agency for the extension project.

Wave induced bed-sheer stress

Data for the wave-induced bed sheer stress layer used in the original project was obtained from Dr. Simon Neill at the University of Bangor. This was based on modelling of a dataset of maximum predicted wave stress values based on data collected during one whole year (2002).

For the extended project a new high‐resolution wave‐induced bed‐sheer stress layer was developed as part of Task 2E of the data layers project commissioned by DEFRA (MB0102 ‐ Accessing and developing the required biophysical datasets and datalayers for Marine Protected Areas network planning and wider marine spatial planning purposes. See http://randd.defra.gov.uk for more details).

Tidally induced bed-sheer stress

Tidally induced bed-sheer stress data used in both the original and extension projects were provided by ABPMer from a tidal model with additional data from Professor Elliott at Bangor University.

Light attenuation

Light attenuation data used in both the original and extension projects were the same as those used by the UKSeaMap project (original data supplied by Proudman Oceanographic Laboratory). These data were supplied under licence conditions.

 

Our other sites

Follow Us

 

twitter logo

 

Follow our tweets

 

Youtube Logo

 

Subscribe to our channel

 

Flickr Logo

 

Browse our gallery

       

Designated Sites Search

Advanced Search
Contact the Team
Email address
Postal address
Habmap Team
C/O Enquiries
CCW
Maes Y Ffynnon
Penrhosgarnedd
Bangor
Gwynedd
Ll57 2DW
Telephone number
0845 1306229
Page feedback