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Pentland Firth Proposed Special Protection Area (pSPA) NO. UK9020317 SPA Site Selection Document: Summary of the scientific case for site selection Document version control Version and Amendments made and author Issued to and date date Version 1 Formal advice submitted to Marine Scotland on Marine Scotland draft SPA. 10/07/14 Nigel Buxton & Greg Mudge Version 2 Updated to reflect change in site status from Marine Scotland draft to proposed in preparation for possible 30/06/15 formal consultation. Shona Glen, Tim Walsh & Emma Philip Version 3 Updated with minor amendments to address Marine Scotland comments from Marine Scotland Science in 23/02/16 preparation for the SPA stakeholder workshop. Emma Philip Version 4 New site selection document drafted for Andrew Bachell, amended new site at Pentland Firth following Katie Gillham & decision to split the Pentland Firth and Scapa Greg Mudge Flow dSPA further to the SPA stakeholder 03/05/16 workshop. Kate Thompson & Emma Philip Version 5 Version control updated & bio-geographical Scientific populations added, references checked. Advisory Kate Thompson & Emma Philip Committee sub- group 05/05/16 Version 6 Updated to reflect comments received by SNH Management Scientific Advisory Committee sub-group. Team Emma Philip and Kate Thompson 18/05/16 Version 7 No revisions required further to Management Protected Areas Team consideration Committee 13/06/16 Version 8 Updated to include Arctic skua further to JNCC, approval from SNH Scientific Advisory Greg Mudge Committee sub-group and Protected Areas 20/06/16 Committee Final draft for JNCC MPA sub-group acknowledgment of joint advice. Emma Philip Version 9 Greg Mudge Emma Philip 22/6/16 Version 10 Final draft for approval Andrew Bachell Emma Philip 22/06/16 Version 11 Final version for submission to Marine Scotland Marine Scotland 24/06/16 Contents 1. Introduction .......................................................................................................... 1 2. Site summary ....................................................................................................... 2 3. Bird survey information ....................................................................................... 5 4. Assessment against the UK SPA Selection Guidelines .................................... 6 5. Site status and boundary .................................................................................. 10 6. Information on qualifying species .................................................................... 11 7. References .......................................................................................................... 16 Annex 1. Site map .................................................................................................. 19 Annex 2. Citation .................................................................................................... 20 1. Introduction This document provides Scottish Natural Heritage’s (SNH) and the Joint Nature Conservation Committee (JNCC) advice on the proposed classification of a Special Protection Area (SPA) in the marine waters of “Pentland Firth” for foraging areas for breeding Arctic tern, Arctic skua and aggregations of common guillemot. It summarises the evaluation for each of the species of interest according to the SPA site selection guidelines (JNCC, 1999) and provides an overview of how the site boundary was developed. Pentland Firth has been selected to provide protection to an important foraging area used by Arctic tern, falling within foraging range of the breeding colonies at Pentland Firth Islands SPA as well as 12 other colonies including Burray Haas and Glimps Holm. Pentland Firth also attracts large aggregations of guillemot during the breeding season as well as other seabirds, many of these will be associated with nearby breeding colonies including those at North Caithness Cliffs SPA, Copinsay SPA, Hoy SPA . During the breeding season Arctic tern, common guillemots and Arctic skua also contribute to an important assemblage of over 41,000 seabirds. The protection of this marine area will make a key contribution to the maintenance of these species in their natural range in UK marine waters and form part of a coherent network of sites at a European level. The importance of the marine environment for birds which spend all or part of their lives around our coasts is well recognised, particularly in Scotland. A total of 106 species of bird are thought to use UK marine waters of which 45 occur in numbers greater than fifty each year and are dependent on the marine environment for a large part of their lifecycle. All of these 45 species except one (black guillemot1) are considered rare or vulnerable bird species (Annex 1), or regularly occurring migratory species by the Birds Directive (EC Directive on the conservation of wild birds (amended) - 2009/147/EC). This means that all Member States are obliged to take account of the requirements of Article 4.1 of the Birds Directive for each of these 44 species. Article 4.1 states that “Member States shall classify in particular the most suitable territories in number and size as special protection areas for the conservation of these species, taking into account their protection requirements in the geographical sea and land area where this Directive applies”. EU guidance on the establishment of SPAs in the marine environment (2007) sets out the groups of marine birds for which SPAs should be considered in the marine environment. This includes sites for aggregations of seabirds and feeding areas for breeding terns, including those used by birds from existing terrestrial SPAs to ensure they have continued access to key food sources. 1 Nature Conservation Marine Protected Areas were designated in August 2014 for black guillemot. 1 In the UK, whilst some coastal SPAs include marine waters below the Mean High Water Springs (MHWS) there are only four entirely marine SPAs classified; Outer Thames Estuary SPA (England), Liverpool Bay/Bae Lerpwl SPA (England/Wales) and Bae Caerfyrddin/Carmarthen Bay SPA (Wales) and Belfast Lough - Open Water SPA (Northern Ireland). In Scotland, 31 marine extensions to seabird colony SPAs have also been classified. The existing suite of sites is not considered sufficient to meet the requirements of Article 4.1 because it currently does not include suitable territories at sea for all of the species that the UK has a responsibility for. This site is being proposed as part of a suite of marine sites that aim to fulfil the requirements for SPAs in the marine environment for rare or vulnerable birds and regularly occurring migratory birds in the UK. As required by Article 4 of the Directive, the classification of this site will enable the application of special conservation measures concerning the habitat of Annex 1 and regularly occurring migratory birds in order to ensure their survival and reproduction in their area of distribution. Full details of the site survey methodologies, data and analysis used to inform the proposed selection of this site are provided in Kober et al (2010 & 2012) for common guillemot and Arctic skua and Wilson et al (2014) and Win et al (2014) for breeding Arctic tern. All scientific work received full external independent peer review at key stages throughout the process. Site selection documents have been reviewed by SNH Scientific Advisory Committee, Management Team and Protected Areas Committee as well as Marine Scotland Science. 2. Site summary The Pentland Firth proposed Special Protection Area (pSPA) (Figure 1) includes waters within the Pentland Firth between the north coast of Caithness and the south of Orkney Mainland and a contiguous area of the North Sea to the southeast. The area included within the pSPA supports a population of European importance of the following Annex 1 species: Arctic tern (Sterna paradisaea) It also supports regularly migratory populations of European importance of the following species: Common guillemot (Uria aalge) 2 Arctic skua (Stercocarius parasiticus)2 2 The Pentland Firth pSPA comprises in total an area of 973.25km . The Pentland Firth links the Atlantic Ocean to the North Sea and is characterised by very strong tidal flows, with spring tide peaks of 4.5ms-1 in the Outer Sound between Swona and Stroma. Depths in the main channel are typically 60-80m but exceed 2 Named qualifier of a breeding seabird assemblage 2 90m in places with shallower waters extending around Stroma and in the vicinity of Swona and the Pentland Skerries. The strong tidal flows strongly influence seabed morphology and habitats, which include areas of bedrock and boulders scoured by coarse sediment and cobbles, with the sediment collecting in pockets and dusting some rock surfaces, and areas of shelly sand formed into waves (Moore 2010). Extensive areas of sandy/gravelly deposits in the eastern part of the pSPA support notable populations of scallops (Barne et al 1996; Chapman, 2004). The pSPA also encompasses spawning/nursery grounds for sandeels (Ellis et al 2012). Sandeels are small and nutritious fish of particular value to seabirds such as Arctic terns, guillemots and Arctic skua during their summer breeding seasons when chicks require abundant supplies of high energy food. Swona and the Pentland Skerries are important breeding sites for Arctic terns and there are large breeding colonies of guillemots adjacent to the pSPA in both Orkney and Caithness (Mitchell et al, 2004). Arctic skua also breeds on Orkney and Caithness close to the aggregations of auks and
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