4f4c4942-4343-5764-6473-313136343932 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2025-03-07T17:24:40.932Z NRW 1.0 wel British National Grid (EPSG::27700) Assessment of Marsh Fritillary (Euphydryas aurinia) Habitat Quality on Castlemartin Range Pembrokeshire (2015) Assessment of Marsh Fritillary (Euphydryas aurinia) Habitat Quality on Castlemartin Range Pembrokeshire (2015) Asesiad o Ansawdd Cynefin Britheg y Gors (Euphydryas aurinia) ar Faes Tanio Castellmartin, Sir Benfro (2015) 2015-10-04 NRW_DS116492 The marsh fritillary Euphydryas aurinia is an Annex II European protected species. The butterfly and its habitats are primary features of the Castlemartin Range Special Site of Scientific Interest (SSSI) in south Pembrokeshire. The metapopulation was discovered in 2003, too late to be included in the Limestone Coast of South West Wales Special Area of Conservation (SAC), but it is included as a key SSSI feature in the SAC Core Management Plan (CMP). Marsh fritillaries exhibit metapopulation dynamics, experiencing regular extinctions and colonisations of suitable patches over time. A large network of suitable sites is essential to maintain their populations in the long term. This survey was commissioned to examine potential marsh fritillary habitat on the Range and to determine the total amount and condition of habitat available for the metapopulation. All survey sites were on MOD Castlemartin Training Area, which in turn lies within the Pembrokeshire Coast National Park. The entire survey area is within the Castlemartin Range SSSI, and most of it is included in the Limestone Cliffs of Southwest Wales SAC. The marsh fritillary Euphydryas aurinia is an Annex II European protected species. The butterfly and its habitats are primary features of the Castlemartin Range Special Site of Scientific Interest (SSSI) in south Pembrokeshire. The metapopulation was discovered in 2003, too late to be included in the Limestone Coast of South West Wales Special Area of Conservation (SAC), but it is included as a key SSSI feature in the SAC Core Management Plan (CMP). Marsh fritillaries exhibit metapopulation dynamics, experiencing regular extinctions and colonisations of suitable patches over time. A large network of suitable sites is essential to maintain their populations in the long term. This survey was commissioned to examine potential marsh fritillary habitat on the Range and to determine the total amount and condition of habitat available for the metapopulation. All survey sites were on MOD Castlemartin Training Area, which in turn lies within the Pembrokeshire Coast National Park. The entire survey area is within the Castlemartin Range SSSI, and most of it is included in the Limestone Cliffs of Southwest Wales SAC. 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 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Habitats and biotopes Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme marsh fritillary butterfly eurodryas aurinia (Euphydryas aurinia) NRW Thesaurus 2023-12-31 geonetwork.thesaurus.local.theme.converted_nrw-keywords SeaDataNet Parameter Discovery Vocabulary 2021-01-06 geonetwork.thesaurus.external.theme.rdf+xml Integrated Public Sector Vocabulary 2013-04-03 geonetwork.thesaurus.external.theme.subjects NRW SMNR Vocabulary 2023-12-27 geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords There are no access restrictions on this data. NRW may release, publish or disseminate it freely. no limitations © CNC/NRW 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. English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 SIR BENFRO - PEMBROKESHIRE Wales (WLS) -5.56224079 -4.47143951 51.56848231 52.26580291 2015-08-28 2015-10-04 Assessment of marsh fritillary habitat quality on Castlemartin Range Pembrokshire in 2015 Documents [A] Species Data available in Recorder 6 [B] Report available in PDF format [C] Spatial Data available as an 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 NRW supplied the contractor with an outline map of the survey area, identifying approximately 360 hectares of grassland and heathland along the Castlemartin coast. These areas were believed to include all vegetation communities with the potential to support marsh fritillaries on the Range. Larval webs were recorded in the course of the habitat surveys. There was insufficient time to do a systematic transect survey, so these are only 'casual' records. All habitat was mapped following the standard NRW methodology. Land was classed into six categories, according to the presence and abundance of devil's-bit scabious. A tussocky sward structure is usually considered essential for marsh fritillary larvae, to provide shelter, hibernation and spring basking sites. Nearly all Welsh marsh fritillary populations are found in this type of habitat on damp rhos pasture. NRW supplied the contractor with an outline map of the survey area, identifying approximately 360 hectares of grassland and heathland along the Castlemartin coast. These areas were believed to include all vegetation communities with the potential to support marsh fritillaries on the Range. Larval webs were recorded in the course of the habitat surveys. There was insufficient time to do a systematic transect survey, so these are only 'casual' records. All habitat was mapped following the standard NRW methodology. Land was classed into six categories, according to the presence and abundance of devil's-bit scabious. A tussocky sward structure is usually considered essential for marsh fritillary larvae, to provide shelter, hibernation and spring basking sites. Nearly all Welsh marsh fritillary populations are found in this type of habitat on damp rhos pasture.