Talland Barton Farm

Site of Special Scientific Interest · 50.3374, -4.4922

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Also within

Cornwall County Cornwall Scenic Area King Charles Way - St Mawes to Cremyll National TrailSouth West Coast Path National Trail

Condition (Natural England)

Unfavourable Declining (1)
UnitFeatureConditionArea (ha)Assessed
SX227515 — Unfavourable Declining 2.03 2017-04-28

Climate exposure

This is about exposure to a nationwide pressure this habitat type carries — not a verdict on this site's own management.

Coastal

Coastal habitats are exposed to sea-level rise and storm erosion. Where hard sea defences sit behind them, there's nowhere landward to retreat to — a squeeze that keeps compressing the habitat no matter how well it's managed.

Habitats

Lowland meadow and pasture, Traditional orchard

Geology & landscape

Mining / Industrial: Quarry · Geological Period: Devonian

Landscape processes: Coastal

Description

Talland Barton Farm SSSI Description Talland Barton Farm is located on the south coast of eastern Cornwall. The site is a single pasture field sloping west and south-west to the top of a low sea-cliff of Devonian rocks (Whitsand Bay Formation). The same rocks are exposed in a small disused quarry inside the northern end of the site, close to its boundary with Talland churchyard. The pasture comprises grassland of the National Vegetation Classification (NVC) type MG5 crested dog’s-tail Cynosurus cristatus – common knapweed Centaurea nigra grassland on mainly acidic to neutral soils that has not been affected by agricultural improvement. Steep banks beside paths and tracks expose patches of un-shaded stony soil that are important for supporting the bryophyte assemblage. Talland Barton Farm is one of only two extant sites globally where the critically endangered many-fruited beardless-moss Weissia multicapsularis is known to occur, with several colonies growing on the steep banks in the site. Many-fruited beardless-moss has shown a long-term decline in Britain and is no longer present at the only locality from which it has been recorded in continental Europe (western France). In addition to many-fruited beardless-moss, the assemblage of bryophytes growing on the steep banks in the SSSI includes the nationally rare Portuguese pocket-moss Fissidens curvatus, Wilson's pottia Tortula wilsonii and a pygmy-moss Acaulon mediterraneum. Thin soil on ledges of the small quarry supports the nationally rare wedge-leaved screw-moss T. cuneifolia and the nationally scarce dog screw-moss T. canescens. Both of these species have shown a long-term decline in Britain. The extraordinary richness of the site for rare and scarce bryophytes probably arose from its favourable topographic, soil and climate conditions. However its richness has apparently been maintained because of the long history of traditional grazing management of the pasture, without any inputs of artificial fertilisers or herbicides, or any nutrient inputs from surrounding land.

Species mentioned

English name
search for this in other sites		 Latin name
search with Google		 IUCN / Red List Type Family
crested dog's tail Cynosurus cristatus LC grass poaceae
black knapweed Centaurea nigra LC herb asteraceae
rounded pygmy moss Acaulon mediterraneum LC moss pottiales
Portuguese pocket-moss Fissidens curvatus LC moss dicranales
Wilson's pottia Tortula wilsonii EN moss pottiales
beardless moss Weissia multicapsularis Not listed in GB list moss pottiales

Plant communities

MG4 — Coastal floodplain grazing marsh, Lowland meadow and pasture

Alopecurus pratensis-Sanguisorba officinalis grassland

Carex acutiformis, Carex hirta, Carex panicea, Juncus articulatus, Juncus inflexus, Luzula campestris, Plagiomnium elatum, Brachythecium rutabulum, Calliergonell cuspidatum, Kindbergia praelonga, Heracleum sphondylium, Achillea millefolium, Bellis perennis, Caltha palustris, Centaurea nigra, Cirsium arvense, Cirsium palustre, Hypochaeris radicata, Leontodon hispidus, Leucanthemum vulgare, Scorzoneroides autumnalis, Serratula tinctoria, Taraxacum officianalis, Cardamine pratensis, Succisa pratensis, Cerastium fontanum, Equisetum arvense, Lathyrus pratensis, Lotus corniculatus, Trifolium dubium, Trifolium pratense, Trifolium repens, Vicia cracca, Vicia sepium, Fritillaria meleagris, Rhinanthus minor, Plantago lanceolata, Veronica serpyllifolia, Rumex acetosa, Primula veris, Primula vulgaris, Ranunculus acris, Ranunculus bulbosus, Ranunculus repens, Thalictrum flavum, Filipendula ulmaria, Potentilla anglica, Sanguisorba officinalis, Galium verum, Silaum silaus, Agrostis capillaris, Agrostis stolonifera, Alopecurus pratensis, Anthoxanthum odoratum, Arrhenatherum elatius, Briza media, Bromopsis erecta, Bromus hordeaceous, Cynosurus cristatus, Dactylis glomerata, Deschampsia cespitosa, Festuca rubra, Holcus lanatus, Lolium perenne, Phleum pratense, Poa pratensis, Poa trivialis, Schedonorus arundinaceus, Schedonorus pratensis, Trisetum flavescens, Chara curta

MG5 — Lowland meadow and pasture, Traditional orchard

Cynosurus cristatus-Centaurea nigra grassland

Carex caryophyllea, Carex flacca, Carex panicea, Juncus articulatus, Juncus effusus, Juncus inflexus, Luzula campestris, Brachythecium rutabulum, Calliergonell cuspidatum, Kindbergia praelonga, Pseudoscleropodium purum, Rhytidiadelphus squarrosus, Conopodium majus, Heracleum sphondylium, Pimpinella saxifraga, Achillea millefolium, Bellis perennis, Centaurea nigra, Cirsium arvense, Crepis capillaris, Hypochaeris radicata, Jacobaea vulgaris, Leontodon hispidus, Leucanthemum vulgare, Scorzoneroides autumnalis, Taraxacum officianalis, Cardamine pratensis, Knautia arvensis, Succisa pratensis, Cerastium fontanum, Colchicum autumnale, Lathyrus pratensis, Lotus corniculatus, Trifolium dubium, Trifolium pratense, Trifolium repens, Vicia cracca, Rhinanthus minor, Plantago lanceolata, Plantago media, Veronica chamaedrys, Rumex acetosa, Primula veris, Primula vulgaris, Ranunculus acris, Ranunculus bulbosus, Ranunculus repens, Agrimonia eupatoria, Alchemilla glabra, Alchemilla vestita, Alchemilla xanthochlora, Filipendula ulmaria, Potentilla erecta, Potentilla reptans, Poterium sanguisorba, Galium verum, Silaum silaus, Agrostis capillaris, Agrostis stolonifera, Alopecurus pratensis, Anthoxanthum odoratum, Arrhenatherum elatius, Avenula pubescens, Briza media, Bromus hordeaceous, Cynosurus cristatus, Dactylis glomerata, Danthonia decumbens, Festuca ovina, Festuca rubra, Holcus lanatus, Koeleria macrantha, Lolium perenne, Phleum pratense, Poa pratensis, Poa trivialis, Schedonorus arundinaceus, Schedonorus pratensis, Trisetum flavescens, Ophioglossum vulgatum, Chara curta

MG6 — Coastal floodplain grazing marsh, Traditional orchard

Lolium perenne-Cynosurus cristatus grassland

Juncus effusus, Luzula campestris, Brachythecium rutabulum, Kindbergia praelonga, Rhytidiadelphus squarrosus, Pimpinella saxifraga, Achillea millefolium, Bellis perennis, Centaurea nigra, Cirsium arvense, Cirsium vulgare, Hypochaeris radicata, Scorzoneroides autumnalis, Taraxacum officianalis, Cardamine pratensis, Cerastium fontanum, Lathyrus pratensis, Medicago lupulina, Trifolium dubium, Trifolium pratense, Trifolium repens, Iris pseudacorus, Rhinanthus minor, Plantago lanceolata, Plantago major, Veronica chamaedrys, Rumex acetosa, Rumex obtusifolius, Primula vulgaris, Ranunculus acris, Ranunculus repens, Potentilla anserina, Potentilla reptans, Agrostis capillaris, Agrostis stolonifera, Alopecurus geniculatus, Alopecurus pratensis, Anthoxanthum odoratum, Arrhenatherum elatius, Bromus hordeaceous, Cynosurus cristatus, Dactylis glomerata, Deschampsia cespitosa, Festuca ovina, Festuca rubra, Holcus lanatus, Lolium perenne, Phleum pratense, Poa annua, Poa pratensis, Poa trivialis, Schedonorus pratensis, Trisetum flavescens

MG8 — Coastal floodplain grazing marsh, Lowland meadow and pasture

Cynosurus cristatus-Caltha palustris grassland

Carex demissa, Carex distans, Carex flacca, Carex nigra, Carex panicea, Eleocharis palustris, Juncus acutiflorus, Juncus articulatus, Juncus effusus, Luzula campestris, Plagiomnium rostratum, Brachythecium rutabulum, Calliergonell cuspidatum, Kindbergia praelonga, Angelica sylvestris, Achillea ptarmica, Bellis perennis, Caltha palustris, Centaurea nigra, Cirsium palustre, Crepis paludosa, Leontodon hispidus, Leucanthemum vulgare, Scorzoneroides autumnalis, Senecio aquaticus, Taraxacum officianalis, Myosotis scorpioides, Cardamine pratensis, Succisa pratensis, Valeriana dioica, Cerastium fontanum, Silene flos-cuculi, Equisetum arvense, Equisetum palustre, Lotus corniculatus, Lotus pedunculatus, Trifolium pratense, Trifolium repens, Mentha aquatica, Euphrasia nemorosa, Rhinanthus minor, Plantago lanceolata, Veronica chamaedrys, Rumex acetosa, Primula vulgaris, Ranunculus acris, Ranunculus repens, Trollius europaeus, Alchemilla glabra, Alchemilla xanthochlora, Filipendula ulmaria, Geum rivale, Sanguisorba officinalis, Galium palustre, Galium uliginosum, Agrostis capillaris, Agrostis stolonifera, Anthoxanthum odoratum, Avenula pubescens, Briza media, Bromus hordeaceous, Cynosurus cristatus, Dactylis glomerata, Festuca rubra, Glyceria declinata, Holcus lanatus, Lolium perenne, Poa trivialis, Schedonorus pratensis, Dryopteris expansa

W24 — Traditional orchard

Rubus fruticosus-Holcus lanatus underscrub

Hedera helix, Acer pseudoplatanus, Betula pubescens, Corylus avellana, Fagus sylvatica, Quercus robur, Fraxinus excelsior, Sambucus nigra, Ulex europaeus, Crataegus monogyna, Prunus spinosa, Solanum dulcamara, Brachythecium rutabulum, Hypnum cupressiforme, Kindbergia praelonga, Pseudoscleropodium purum, Anthriscus sylvestris, Chaerophyllum temulentum, Heracleum sphondylium, Arum maculatum, Achillea millefolium, Centaurea nigra, Cirsium arvense, Cirsium palustre, Cirsium vulgare, Hypochaeris radicata, Jacobaea vulgaris, Lapsana communis, Solidago virgaurea, Taraxacum officianalis, Alliaria petiolata, Cerastium fontanum, Silene dioica, Stellaria holostea, Equisetum arvense, Mercurialis perennis, Lathyrus pratensis, Lotus corniculatus, Trifolium repens, Vicia sativa, Vicia sepium, Geranium robertianum, Glechoma hederacea, Stachys sylvatica, Chamerion angustifolium, Epilobium hirsutum, Epilobium montanum, Digitalis purpurea, Veronica chamaedrys, Rumex sanguineus, Primula vulgaris, Ficaria verna, Ranunculus acris, Ranunculus repens, Filipendula ulmaria, Fragaria vesca, Geum urbanum, Potentilla sterilis, Rosa canina, Rubus fruticosus agg., Cruciata laevipes, Galium aparine, Urtica dioica, Viola riviniana, Agrostis capillaris, Agrostis stolonifera, Anisantha sterilis, Anthoxanthum odoratum, Arrhenatherum elatius, Brachypodium sylvaticum, Dactylis glomerata, Deschampsia cespitosa, Elytrigia repens, Festuca rubra, Holcus lanatus, Lolium perenne, Phalaris arundinacea, Phragmites australis, Poa pratensis, Poa trivialis, Trisetum flavescens, Dryopteris filix-mas