CA40: Gerrans, Veryan and Mevagissey Bays
Total Page：16
File Type：pdf, Size：1020Kb
CA40: Gerrans, Veryan and Mevagissey Bays Key Landscape Characteristics1 • Large coastal bays with sandy beaches and small coves. • Coastal fishing villages located at the mouths of stream valleys. • Highly articulated cliffs and headlands. • Few inland settlements and farmsteads regularly dispersed throughout the landscape with a few larger villages. • Bracken scrub and rough ground behind cliffs on the coastal strip. • Woodland mainly located in valleys with some trees around farmsteads. • Undulating high plateau of a mixture of arable and pastoral farmland. • Ancient yet variable field pattern of medium to small irregular fields. • Steep stream valleys with associated wetland vegetation with remnant pasture or secondary or ancient woodland on slopes. • Areas of estate parkland and gardens. 1 Taken from Cornwall Council (2007) Cornwall and Isles of Scilly Landscape Character Study [http://www.cornwall.gov.uk/default.aspx?page=20139 accessed January 2011] Land Use Consultants CA40: Gerrans, Veryan and Mevagissey Bays Landscape Sensitivity Assessment for Wind Turbines Criteria Lower sensitivity Higher sensitivity A strongly undulating landscape dissected by streams creating small wooded valleys, Landform and contrasting with areas of more exposed hills and subtle ridges, giving the landscape scale variety in scale and topography. The land comes to an abrupt end at high coastal cliffs which rise above sandy beaches and small coves, with prominent headlands at Nare Head, Dodman Point and Black Head. The sweeping bays of Garrans, Veryan and Mevagissey convey an expansive sense of scale to the coastal landscape. This LCA has is dominated by a medium-size irregular field pattern (a medieval Land cover pattern landscape of Anciently Enclosed Land). There are clear examples of fossilised and presence of medieval stripfield systems are frequent and there are particularly well-preserved human scale medieval field systems on Dodman Point and adjacent to Tregony (the former town features fields). In addition there are areas of woodland on the plateau, areas of parkland and ornamental gardens (at Caerhays Castle and Heligan) as well as areas of rough ground and scrub along the coastal strip. Frequent human scale features include Cornish hedges, trees, woodland, finger posts and farmsteads. Although the LCA contains the A390 and some of the lanes on the higher ground Tracks/transport have been widened and 'improved' over the years (including the A3078 from pattern Tregony to St Just in Roseland, the B3287 from Tregony to Hewas Water, and the B3273 which hugs the broad valley of the St Austell River between St Austell and Mevagissey), as the lanes descend to cross the valleys, they dip and narrow, enclosed by steep sided Cornish hedges, becoming winding with tight corners. Although the LCA does not refer to a skyline in the description, the LCA description notes the highly articulated cliffs and headlands, including the prominent headlands of Nare Head, Dodman Point and Black Head. The historic features section notes the Skylines presence of Carne (Veryan) Beacon (the largest Bronze Age burial mound in the county); the Iron Age cliff castle on Dodman Point (the largest prehistoric enclosure in Cornwall); a spectacular cliff castle on Black Head; Resugga Castle Iron Age hillfort overlooking the confluence of the St Stephen and Fal rivers; Medieval churches; and other nationally important hillforts and other late prehistoric remains found in strategic locations across the LCA. This is a peaceful, rural landscape defined by its dispersed medieval settlement pattern of farmsteads and small hamlets. Few coastal villages within the three main bays are mostly tucked into small coves at the mouth of streams. The character of some villages (e.g. Gorran Haven and Mevagissey), has been weakened by tourist Perceptual development such the proliferation of B&Bs and holiday homes, having an qualities incremental impact on perceptions of tranquillity. The development of amenity land, such as golf courses and caravan/camping sites, is also eroding these qualities. Levels of tranquillity are affected in the north-east by the close proximity of the town of St Austell and views to the nearby china clay industry (in CA17). In the south- west, recreational boating and cruise ships operating along the Fal and in Falmouth Docks (CA13) are affecting the generally rural, tranquil character of the landscape. Cornwall Council’s HLC Sensitivity Mapping for wind turbines assesses the HLC Historic landscape types of ‘Rough Ground’ (‘Coastal’ and ‘Upland’ – the latter found along some valleys character and in more exposed areas) as of ‘high’ vulnerability to development. Locations of ‘Ornamental’ parkland, particularly at Heligan and Caerhays, are also assessed as of ‘high’ vulnerability to wind turbines. The landscape’s large tracts of ‘Medieval’ Land Use Consultants CA40: Gerrans, Veryan and Mevagissey Bays Criteria Lower sensitivity Higher sensitivity farmland are assessed as of ‘moderate-high’ vulnerability, as are the patches of ‘Ancient Woodland’ found in some valleys. The LCA’s blocks of ‘Post-Medieval (Intakes)’and ’Modern Enclosures (Intakes)’ are assessed as of ‘moderate-low’ and ‘low’ vulnerability respectively. Areas of ‘Recreational’ land, particularly associated with golf course and caravan sites in the north-east of the LCA, are assessed as of ‘moderate’ vulnerability to wind turbines. The lowest vulnerability scores are associated with the landscape’s areas of modern development as well as blocks of ‘Plantations and Scrub’ found in some valleys. The LCA describes the Carne Beacon and the Dodman cliff castle, the medieval Distinctive urban topography of Tregony, Caerhays Castle architecture and parkland, the Lost landscape features Gardens of Heligan, the many white-painted metal fingerposts, Portloe fishing village set amid spectacular cliff scenery, and Pentewan harbour as distinctive features of this landscape. The majority of the coast and all of the south-west hinterland of the LCA falls within the ‘South Coast Central’ (Roseland) part of the Cornwall AONB (52% of the LCA is designated as AONB). Qualities that may particularly be affected by wind energy development are the majestic scale of the cliffs, far reaching panoramic views from the rugged cliff tops, the wild character of the cliff tops, and the prominence and skyline of pre-historic features from the largest Bronze Age burial mound in Cornwall at Carne Beacon to the County’s largest prehistoric enclosure at the Iron Scenic quality Age cliff castles at Dodman, and the narrow winding lanes with high hedges and blind corners. The coastline backing Gerrans Bay to Portmellon is also defined as Heritage Coast. In addition, the north-eastern tip of the LCA (around Coombe and Grampound) falls within the Fal Valley AGLV [NB the Fal Valley AGLV extends further south and west on the paper map than on the GIS version] – special qualities include the inaccessible and 'unspoilt' nature of the valley, the woodland and thick hedgerows, the ornamental landscapes around Trewithen, the peaceful character in areas of coppice, and the dramatic viaducts. The ‘Trenowth’ AGLV is also shown on GIS mapping, but not on the paper maps. Although the relatively large scale of the landscape and presence of modern human influence could indicate a lower sensitivity to wind energy development, the LCA’s rugged coastline with prominent headlands, dominance of small-scale, ancient field Overall sensitivity patterns, and high scenic quality (particularly along the coast) heighten levels of assessment sensitivity to turbines. However, the sensitivities related to the coast are restricted to the coastal strip. Overall this LCA is considered to have a moderate sensitivity to wind energy development outside the AONB and a moderate-high sensitivity to wind energy development within the AONB. The landscape’s rugged and naturalistic coastline and its immediate hinterland, and the small scale valleys would be particularly sensitive. Sensitivities to different turbine This medium-scale landscape, characterised by its medieval field pattern, would be heights particularly sensitive to turbines at the upper end of the ‘large’ scale. The smaller scale valleys would also be sensitive to ‘medium’ scale turbines. The highly scenic Very small: 18-25m coastline with its prominent headlands and scenic coastal views would be sensitive to Small: 26-60m any wind turbines. Medium: 61-99m Large: 100-150m Sensitivities to The medium-scale landscape, characterised by its strong undulations and overlying different cluster medieval field pattern, would be particularly sensitive to ‘medium’, ‘large’ and ‘very Land Use Consultants CA40: Gerrans, Veryan and Mevagissey Bays Criteria Lower sensitivity Higher sensitivity sizes and large’ scale turbine clusters. The highly scenic coastline with its prominent headlands distribution and scenic coastal views would be sensitive to any scale of wind energy development. Single turbine Small (<5 turbines) Medium (6-10) Large (11-25) Very large (>25) Landscape strategy and Guidance for Wind Turbines The landscape strategy is for a landscape with occasional small clusters of turbines, or single turbines, comprising turbines up to the lower end of the ‘large’ scale (turbine size and cluster size should relate to landscape scale which varies within the LCA), and with no turbines along the coastal edge or its Landscape strategy immediate hinterland. Elsewhere within the AONB development limited to occasional very small