4f4c4942-4343-5764-6473-313631323834 English Natural Resources Wales Maes y Ffynnon Bangor LL57 2DW Wales opendata@cyfoethnaturiolcymru.gov.uk 2026-07-01T10:09:23.054Z NRW 1.0 wel British National Grid (EPSG:27700) Understanding the likely scale of deterioration of Marine Protected Area features due to coastal squeeze: Part 2 Understanding the likely scale of deterioration of Marine Protected Area features due to coastal squeeze: Part 2 2026-04-01 NRW_DS161284 To complete the coastal squeeze assessments a series of geospatial layers and accompanying spreadsheets were created as part of a project to understand the likely scale of deterioration of Marine Protected Area features due to coastal squeeze. Coastal squeeze and natural squeeze was calculated for habitats at a national scale for the whole of the Welsh coastline, as well as for smaller delineations of the coastline. The potential scale of habitat deterioration due to coastal squeeze was then reported: · Nationally; · Against individual MPAs; and · Against MPA designations amalgamated across Wales: o SACs; o SSSIs; o SPAs; and o Ramsar sites. Coastal squeeze has been assessed for three timeframes (epochs): · 2025 to 2055 (30 years) – Equivalent to SMP2 medium-term epoch; · 2055 to 2105 (50 years) – Equivalent to SMP2 long-term epoch; and · 2105 to 2155 (50 years) – New long-term epoch. To complete the coastal squeeze assessments a series of geospatial layers and accompanying spreadsheets were created as part of a project to understand the likely scale of deterioration of Marine Protected Area features due to coastal squeeze. Coastal squeeze and natural squeeze was calculated for habitats at a national scale for the whole of the Welsh coastline, as well as for smaller delineations of the coastline. The potential scale of habitat deterioration due to coastal squeeze was then reported: · Nationally; · Against individual MPAs; and · Against MPA designations amalgamated across Wales: o SACs; o SSSIs; o SPAs; and o Ramsar sites. Coastal squeeze has been assessed for three timeframes (epochs): · 2025 to 2055 (30 years) – Equivalent to SMP2 medium-term epoch; · 2055 to 2105 (50 years) – Equivalent to SMP2 long-term epoch; and · 2105 to 2155 (50 years) – New long-term epoch. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en ABP Marine Environmental Research Ltd Suite B, Waterside House, Town Quay, Southampton, SO14 2AQ, England enquiries@abpmer.co.uk http://www.abpmer.co.uk/ Protected sites GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme coastal squeeze marine protected areas(marine consultation areas)(sensitive marine areas)seealso marine conservation&marine nature reserve NRW Thesaurus 2026-03-04 geonetwork.thesaurus.local.theme.converted_nrw-keywords This data is comprised of a mixture of third party owned records and NRW records. NRW policy permits access to and release of this data under the same terms as its own data. There are no access restrictions on this data. NRW may release, publish or disseminate it freely. noLimitations © CNC/NRW and UKHO. NRW owns the copyright of the collation, but the ownership of the records themselves rests with the originator. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. Contains data derived from UKHO. All rights Reserved. Open Government Licence English environment Wales (WLS) -5.77 -2.61 51.24 53.50 2023-08-31 2024-04-22 Oaten J, Finch D, Frost N 2024. Understanding the likely scale of deterioration of Marine Protected Area features due to coastal squeeze: Volume 2 – Results & Discussion. NRW Evidence Report No: 789, 110pp, Natural Resources Wales, Bangor Delimited Unknown Microsoft Excel Outputs Documents Unknown Evidence Report in MS Word or PDF Format Geographic Information System ESRI Feature Class 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 dataset has not been assessed for conformance to the referenced INSPIRE regulation. false The project applies standard predictive hypsometric analysis to calculate the changes in tidal frame around the Welsh coast as a result of SLR. These tidal frames are calculated from a newly created national Digital Terrain Model (DTM). Present-day habitat maps are then used to provide a more site-specific assessment of the habitats present, and hence how they may change over time. Further information on the habitat datalayers used in the assessment can be found in the Volume 1 Report. The coastal squeeze and natural squeeze assessments are then undertaken. The quantification of coastal squeeze and natural squeeze is calculated: · Nationally; · Against SMP2 Policy Unit (PU); and · Against individual Assessment Units. In each case, coastal squeeze and natural squeeze is calculated for defined Habitat Groups (see Section 2.2). An assessment of coastal and natural squeeze across the MPA network has then been undertaken. The potential scale of deterioration of MPAs due to coastal squeeze is reported against: · Individual MPAs; and · MPA designations amalgamated across Wales: o SACs; o SSSIs; o SPAs; and o Ramsar sites. The derived data products are vast and complex and to help users assess and interpret the data they should review section 6 of the accompanying report which will highlight frequently encountered observations. The project applies standard predictive hypsometric analysis to calculate the changes in tidal frame around the Welsh coast as a result of SLR. These tidal frames are calculated from a newly created national Digital Terrain Model (DTM). Present-day habitat maps are then used to provide a more site-specific assessment of the habitats present, and hence how they may change over time. Further information on the habitat datalayers used in the assessment can be found in the Volume 1 Report. The coastal squeeze and natural squeeze assessments are then undertaken. The quantification of coastal squeeze and natural squeeze is calculated: · Nationally; · Against SMP2 Policy Unit (PU); and · Against individual Assessment Units. In each case, coastal squeeze and natural squeeze is calculated for defined Habitat Groups (see Section 2.2). An assessment of coastal and natural squeeze across the MPA network has then been undertaken. The potential scale of deterioration of MPAs due to coastal squeeze is reported against: · Individual MPAs; and · MPA designations amalgamated across Wales: o SACs; o SSSIs; o SPAs; and o Ramsar sites. The derived data products are vast and complex and to help users assess and interpret the data they should review section 6 of the accompanying report which will highlight frequently encountered observations.