Aire Point to Carrick Du SSSI
Encyclopedia
Aire Point to Carrick Du SSSI is a Site of Special Scientific Interest
Site of Special Scientific Interest
A Site of Special Scientific Interest is a conservation designation denoting a protected area in the United Kingdom. SSSIs are the basic building block of site-based nature conservation legislation and most other legal nature/geological conservation designations in Great Britain are based upon...

 on the Penwith Peninsula, Cornwall
Cornwall
Cornwall is a unitary authority and ceremonial county of England, within the United Kingdom. It is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar. Cornwall has a population of , and covers an area of...

. It is 5.98 square kilometres in extent, stretching from to . The site is designated both for its biological
Flora and fauna of Cornwall
Cornwall is the county that forms the tip of the southwestern peninsula of England; this area has a mild and warm climate regulated by the Gulf Stream...

 and its geological
Geology of Cornwall
The Geology of Cornwall is dominated by its granite backbone, part of the Cornubian batholith, formed during the Variscan orogeny. Around this is an extensive metamorphic aureole formed in the mainly Devonian slates that make up most of the rest of the county...

 interest.

The site or areas within it have previously been known by the following names:
  • Botallack Head to Cape Cornwall SSSI
  • Gurnard's Head and Porthmeor Cove, and Trevega and Trowan Cliffs SSSI
  • Cape Cornwall to Clodgy Point SSSI


The site (under its current boundaries) was notified on 26 May 1995, having first been notified in 1972. However the Botallack Head to Cape Cornwall SSSI was first scheduled in 1967, and the Gurnard's Head
Gurnard's Head
Gurnard's Head is a prominent headland on the north coast of the Penwith peninsula in Cornwall, England, United Kingdom. It is near the hamlet of Treen in the parish of Zennor....

 and Porthmeor Cove, and Trevega and Trowan Cliffs SSSI was first scheduled in 1951.

The site includes a Nature Conservation Review site and eight Geological Conservation Review
Geological Conservation Review
The Geological Conservation Review is produced by the UK's Joint Nature Conservation Committee and is designed to identify those sites of national and international importance needed to show all the key scientific elements of the geological and geomorphological features of Britain...

 sites. The whole of the site is included in the Cornwall Area of Outstanding Natural Beauty and within the Penwith Heritage Coast. Part of the site is within the West Penwith Environmentally Sensitive Area. Parts of the site are owned by the National Trust
National Trust for Places of Historic Interest or Natural Beauty
The National Trust for Places of Historic Interest or Natural Beauty, usually known as the National Trust, is a conservation organisation in England, Wales and Northern Ireland...

.

Description

Aire Point to Carrick Du is located on the west and north coast of the Penwith peninsula, extending from a point approximately 3 km north east of Land's End
Land's End
Land's End is a headland and small settlement in west Cornwall, England, within the United Kingdom. It is located on the Penwith peninsula approximately eight miles west-southwest of Penzance....

 to St Ives
St Ives, Cornwall
St Ives is a seaside town, civil parish and port in Cornwall, England, United Kingdom. The town lies north of Penzance and west of Camborne on the coast of the Celtic Sea. In former times it was commercially dependent on fishing. The decline in fishing, however, caused a shift in commercial...

. The site is dominated by vertical sea cliffs formed by the Land's End granite
Granite
Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granite usually has a medium- to coarse-grained texture. Occasionally some individual crystals are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic...


mass. The cliffs are topped by steep slopes punctuated by sheer castellated granite cams. Associated Devonian slates and basaltic rocks, altered by the intrusion of the granite, display fine examples of the effects of contact metamorphism. The soils, which
are often thin, are generally acidic, well drained with a gritty, loamy texture and a humic surface horizon. Iron panning has impeded drainage locally and peaty soils have developed where wet flushes occur. Exposure to salt spray and the prevailing south
westerly winds have resulted in a dwarfed vegetation.

Biological interest

The site supports populations of Red Data Book and nationally scarce plants and animals.

Plant communities present on the site

The vegetation of the cliffs exhibits a complex of maritime and sub-maritime communities. The cliff slopes and tops are characterised by maritime grassland, heath and scrub communities with frequent species rich flushes, particularly on the north coast. The cliff faces support a maritime rock-crevice community with Thrift
Armeria maritima
Armeria maritima is the botanical name for a species of flowering plant.It is a popular garden flower, known by several common names, including thrift, sea thrift, and sea pink. The plant has been distributed worldwide as a garden and cut flower...

 Armeria maritima, Rock Samphire
Rock samphire
Samphire or rock samphire, Crithmum maritimum, is the sole species of the genus Crithmum. It is an edible wild plant found on southern and western coasts of Britain and Ireland, on mediterranean and western coasts of Europe including the Canary Islands, North Africa and the Black Sea...

 Crithmum maritimum, Sea Aster Aster tripolium and Sea Spleenwort Asplenium marinum as common components. On the shallow soils of rock ledges and outcrops, a maritime therophyte community occurs where typical species include
English Stonecrop Sedum anglicum, Thrift, Buck's-horn Plantain Plantago coronopus and Kidney Vetch Anthyllis vulneraria. The grassland communities of the cliff slopes are dominated by Red Fescue Festuca rubra which often forms a matressy sward, and Yorkshire-fog Holcus lanatus. Thrift, Wild Carrot
Wild carrot
Daucus carota is a flowering plant in the family Apiaceae, native to temperate regions of Europe, southwest Asia and naturalised to northeast North America and Australia; domesticated carrots are cultivars of a subspecies, Daucus carota subsp...

 Daucus carota, Sea Campion Silene maritima, Sea Plantain Plantago maritima and Ox-eye Daisy Leucanthemum vulgare are common. Where trampling occurs, or on thin soils, the grassland is characterised by Buck's-horn Plantain, Ribwort Plantain Plantago lanceolata, Kidney Vetch and Spring Squill Scilla verna. Bluebell
Common Bluebell
Hyacinthoides non-scripta, commonly known as the common bluebell, is a spring-flowering bulbous perennial plant. -Taxonomy:...

 Hyacinthoides non-scripta is found in more sheltered areas and on upper slopes where it is typically associated with coarse grasses, mainly Cock's-foot Dactylis glomerata and scrub communities.

Extensive areas of heath occur generally higher up the cliff profile and on the cliff tops. These are dominated by Heather
Calluna
Calluna vulgaris is the sole species in the genus Calluna in the family Ericaceae. It is a low-growing perennial shrub growing to tall, or rarely to and taller, and is found widely in Europe and Asia Minor on acidic soils in open sunny situations and in moderate shade...

 Calluna vulgaris, Bell Heather Erica cinerea and Western Gorse Ulex gallii and often display the waved structure characteristic of exposure to saltladen winds. Spring squill, Common Bird's-foot Trefoil Lotus corniculatus, Sheep's-bit
Jasione montana and Wild Thyme
Wild thyme
Thymus serpyllum, known by the common names of Breckland Thyme, Wild Thyme or Creeping Thyme is a species of thyme native to most of Europe and North Africa. It is a low, usually prostrate subshrub growing to 2 cm tall with creeping stems up to 10 cm long, with oval evergreen leaves...

 Thymus drucei are abundant. The maritime communities support two Red Data Book species - the eyebright species Euphrasia vigursii and Early meadow-grass Poa infirma. Nationally scarce plant plants found here include Lanceolate Spleenwort Asplenium billotti, Hairy Bird's-foot Trefoil Lotus subbiflorus and Pale Dog-violet Viola lactea.

Between Boscaswell Cliffs and Clodgy Point the site is characterised by a number of wet flushes and an extensive area of mire
Miré
Miré is a commune in the Maine-et-Loire department in western France....

 at Boswednack
Boswednack
Boswednack is a village in the parish of Zennor near the north coast of the Penwith peninsula in Cornwall, United Kingdom....

. The flushes are dominated by Purple Moor-grass Molinia caerulea and typical species occurring here include Cross-leaved Heath Erica tetralix, Tormentil
Tormentil
Common Tormentil is a herbaceous perennial belonging to the rose family , also known as Septfoil or simply as "tormentil" .-Characteristics:It is a low, clumb-forming plant with slender, procumbent...

 Potentilla erecta, Sharp-flowered Rush Juncus acutiflorus and Royal Fern Osmunda regalis. Other species of note associated with the wet flushes include Bog Asphodel
Bog Asphodel
Narthecium ossifragum, commonly known as bog-, Lancashire- or bastard asphodel, is a plant of Western Europe, found on wet, boggy moorlands up to about 1000 m. It produces spikes of bright yellow flowers in summer. The bright orange fruits have been used as a colourant to replace saffron by...

 Narthecium ossifragum, the cottongrass Eriophorum angustifolium and Pale Butterwort Pinguicula lusitanica. The nationally scarce plants Cornish Moneywort Sibthorpia europaea and Yellow Bartsia Parentucellia viscosa are found at Boswednack.

Scrub communities, including pure stands of Bracken
Bracken
Bracken are several species of large, coarse ferns of the genus Pteridium. Ferns are vascular plants that have alternating generations, large plants that produce spores and small plants that produce sex cells . Brackens are in the family Dennstaedtiaceae, which are noted for their large, highly...

 Pteridium aquilinum occur on the cliff slopes and tops and particularly in the valleys. European Gorse Ulex europaeus, Bramble
Bramble
Brambles are thorny plants of the genus Rubus, in the rose family . Bramble fruit is the fruit of any such plant, including the blackberry and raspberry. The word comes from Germanic *bram-bezi, whence also German Brombeere , Dutch Braam and French framboise...

 Rubus fruticosus agg. and Blackthorn
Blackthorn
Prunus spinosa is a species of Prunus native to Europe, western Asia, and locally in northwest Africa. It is also locally naturalised in New Zealand and eastern North America....

 Prunus spinosa are frequent, associated with Cock's-foot, Bluebell and, locally, Honeysuckle
Honeysuckle
Honeysuckles are arching shrubs or twining vines in the family Caprifoliaceae, native to the Northern Hemisphere. There are about 180 species of honeysuckle, 100 of which occur in China; Europe, India and North America have only about 20 native species each...

 Lonicera periclymenum and Ivy
Ivy
Ivy, plural ivies is a genus of 12–15 species of evergreen climbing or ground-creeping woody plants in the family Araliaceae, native to western, central and southern Europe, Macaronesia, northwestern Africa and across central-southern Asia east to Japan and Taiwan.-Description:On level ground they...

 Hedera helix.

The site supports a typical Cornish cliff bryophyte
Bryophyte
Bryophyte is a traditional name used to refer to all embryophytes that do not have true vascular tissue and are therefore called 'non-vascular plants'. Some bryophytes do have specialized tissues for the transport of water; however since these do not contain lignin, they are not considered to be...

 flora and includes a number of rarities, most notably the RDB moss
Moss
Mosses are small, soft plants that are typically 1–10 cm tall, though some species are much larger. They commonly grow close together in clumps or mats in damp or shady locations. They do not have flowers or seeds, and their simple leaves cover the thin wiry stems...

 Tortula solmsii.

The west facing section of the coast between Aire Point and Kenidjack Castle displays examples of fully exposed rocky shore communities. The plants and animals are typical of a wave beaten coast with the lower shore characterised by the brown seaweeds "Dabberlocks" Alaria esculenta and "Tangle" Laminaria digitalis and pools containing coralline algae Corallina officinalis
Corallina officinalis
Corallina officinalis is a calcareous red seaweed which grows in the lower and mid-littoral zones on rocky shores.It is primarily found growing around the rims of tide pools, but can be found in shallow crevices anywhere on the rocky shore that are regularly refreshed with sea water...

 and pink encrusting Lithothamnion
Lithothamnion
Lithothamnion is a genus of thalloid red alga comprising 103 species. Its members are known by a number of common names.Recorded common names are griuán, maërl, punalevä-suku, stenhinna and maerl. The monomerous, crustose thalli are composed of a single system of filaments which grow close to the...

 spp.

Invertebrates

The range of land habitats, many of which are floristically rich, support a diverse and abundant invertebrate fauna, including the following Red Data Book species: the mud snail Lymnaea glabra, the bug
Hemiptera
Hemiptera is an order of insects most often known as the true bugs , comprising around 50,000–80,000 species of cicadas, aphids, planthoppers, leafhoppers, shield bugs, and others...

 Heterogaster artimisae and the hoverfly
Hoverfly
Hoverflies, sometimes called flower flies or syrphid flies, make up the insect family Syrphidae. As their common name suggests, they are often seen hovering or nectaring at flowers; the adults of many species feed mainly on nectar and pollen, while the larvae eat a wide range of foods...

 Microdon mutabilis
Microdon mutabilis
Microdon mutabilis, is a species of hoverfly. It is found in many parts of Britain and Europe. The distinctive almost slug-like larvae live in ants nests. They are hemispherical in shape, heavily armoured and believed prey on the eggs and larvae of a number of ant species, including Formica lemani,...

. Nationally scarce butterflies including the Pearl-bordered Fritillary
Pearl-bordered Fritillary
The Pearl-bordered Fritillary is a butterfly of the Nymphalidae family.It is orange with black spots on the upperside of its wing and has a wingspan of 38–46 mm. On the underside of the wings there is a row of silver pearly markings along the edge, which give the species its name...

 Boloria euphrosyne and Silver-studded Blue
Silver-studded Blue
The Silver-studded Blue is a butterfly in the family Lycaenidae.-Appearance, behavior and distribution:So named due to the silvery blue metallic spots on the underside hind wings. The upperside are a rich, deep iridescent blue in the males with a black border and the characteristic Lycid white...

 Plebejus argus, and the nationally scarce jewel beetle
Jewel beetle
Buprestidae is a family of beetles, known as jewel beetles or metallic wood-boring beetles because of their glossy iridescent colors. The family is among the largest of the beetles, with some 15,000 species known in 450 genera...

 Trachys troglodytes also
occur.

Limpets Patella aspera
Patella aspera
Patella aspera is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Patellidae, one of the families of true limpets....

are abundant and barnacle
Barnacle
A barnacle is a type of arthropod belonging to infraclass Cirripedia in the subphylum Crustacea, and is hence related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive settings. They are sessile suspension feeders, and have...

s, mainly Chthamalus stellatus
Chthamalus stellatus
Chthamalus stellatus, common name Poli's stellate barnacle, is a species of acorn barnacle common on rocky shores in South West England, Ireland, and Southern Europe. It is named after Giuseppe Saverio Poli.-Description:...

, are plentiful on the
upper shore.

Birds

Cliff ledges provide nesting sites for seabirds including Fulmar
Fulmar
Fulmars are seabirds of the family Procellariidae. The family consists of two extant species and two that are extinct.-Taxonomy:As members of Procellaridae and then the order Procellariiformes, they share certain traits. First, they have nasal passages that attach to the upper bill called...

, Shag
Common Shag
The European Shag or Common Shag is a species of cormorant. It breeds around the rocky coasts of western and southern...

, Black-legged Kittiwake
Black-legged Kittiwake
The Black-legged Kittiwake is a seabird species in the gull family Laridae.This species was first described by Linnaeus in his Systema naturae in 1758 as Larus tridactylus....

s and gull
Gull
Gulls are birds in the family Laridae. They are most closely related to the terns and only distantly related to auks, skimmers, and more distantly to the waders...

s. Peregrine Falcon
Peregrine Falcon
The Peregrine Falcon , also known as the Peregrine, and historically as the Duck Hawk in North America, is a widespread bird of prey in the family Falconidae. A large, crow-sized falcon, it has a blue-gray back, barred white underparts, and a black head and "moustache"...

, Chough
Chough
The Red-billed Chough or Chough , Pyrrhocorax pyrrhocorax, is a bird in the crow family; it is one of only two species in the genus Pyrrhocorax...

 and Raven
Raven
Raven is the common name given to several larger-bodied members of the genus Corvus—but in Europe and North America the Common Raven is normally implied...

 nest on secluded cliff slopes and carns. Areas of scrub on the cliff tops and in the valleys provide nesting sites for European Stonechat
European Stonechat
The European Stonechat is a small passerine bird that was formerly classed as a subspecies of the Common Stonechat. Long considered a member of the thrush family Turdidae, genetic evidence has placed it and its relatives in the Old World flycatcher family Muscicapidae.It is 11.5–13 cm long and...

, Whitethroat
Whitethroat
The Common Whitethroat, Sylvia communis, is a common and widespread typical warbler which breeds throughout Europe and across much of temperate western Asia. This small passerine bird is strongly migratory, and winters in tropical Africa, Arabia and Pakistan.This is one of several Sylvia species...

 and Sedge Warbler
Sedge Warbler
The Sedge Warbler is an Old World warbler in the genus Acrocephalus. It is a medium-sized warbler with a brown, streaked back and wings and a distinct pale supercilium. Sedge Warblers are migratory, crossing the Sahara to get from their European and Asian breeding grounds to spend winter in Africa...

. Grasshopper Warbler
Grasshopper Warbler
The Grasshopper Warbler, Locustella naevia, is an Old World warbler in the grass warbler genus Locustella. It breeds across much of temperate Europe and Asia. It is migratory, wintering from northwest Africa to India....

s breed in the scrub associated with the mires at Boswednack
Boswednack
Boswednack is a village in the parish of Zennor near the north coast of the Penwith peninsula in Cornwall, United Kingdom....

, which also provides suitable conditions for wintering Water Rail
Water Rail
The Water Rail is a bird of the rail family which breeds in well-vegetated wetlands across Europe, Asia and North Africa. Northern and eastern populations are migratory, but this species is a permanent resident in the warmer parts of its breeding range...

, Eurasian Woodcock
Eurasian Woodcock
The Eurasian Woodcock, Scolopax rusticola, is a medium-small wading bird found in temperate and subarctic Eurasia. It has cryptic camouflage to suit its woodland habitat, with reddish-brown upperparts and buff-coloured underparts...

 and Eurasian Curlew
Eurasian Curlew
The Eurasian Curlew, Numenius arquata, is a wader in the large family Scolopacidae. It is one of the most widespread of the curlews, breeding across temperate Europe and Asia...

.

The location of this site at the southern-western tip of the British mainland makes it an important resting and feeding
area for migratory birds, the more sheltered valleys being of particular importance.

Mammals

Grey Seal
Grey Seal
The grey seal is found on both shores of the North Atlantic Ocean. It is a large seal of the family Phocidae or "true seals". It is the only species classified in the genus Halichoerus...

s are known to breed on this stretch of coast. Offshore islands, notably The Brisons and The Carracks
The Carracks
The Carracks and Little Carracks are a group of small rocky inshore islands off the Atlantic north coast of west Cornwall, United Kingdom. The name comes from "carrek", the Cornish language word for 'rock'....

, provide haul out sites for this species.

The disused mines provide roosting sites for bats, including the Greater Horseshoe Bat
Greater Horseshoe Bat
The Greater Horseshoe Bat is a European bat of the Rhinolophus genus. Its distribution covers Europe, Africa, South Asia and Australia. It is the largest of the European Horseshoe Bats and is thus easily distinguished from other species...

 and Daubenton's Bat
Daubenton's bat
Daubenton's Bat, Myotis daubentonii, is a Eurasian bat with quite short ears. It ranges from Britain to Japan and is considered to be increasing its numbers in many areas.The name commemorates the French naturalist Louis-Jean-Marie Daubenton....

.
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