Fairmile Bottom

Site of Special Scientific Interest · 50.8768, -0.5932

Condition (Natural England)

Unfavourable Declining (4) Unfavourable Recovering (1)
UnitFeatureConditionArea (ha)Assessed
SU985090 Unfavourable Declining 26.25 2024-03-22
SU988093 Unfavourable Recovering 14.94 2022-01-20
SU994097 Unfavourable Declining 16.21 2024-03-22
SU997102 Unfavourable Declining 3.66 2024-03-22
TQ001104 Unfavourable Declining 9.12 2024-03-22

Geology & landscape

Rock Type: Chalk

Description

Description Fairmile Bottom lies on a north west facing scarp slope of the South Downs where the Upper Chalk is covered by a thin layer of clay with flints. The site contains yew Taxus baccata woodland and scrub as well as unimproved chalk grassland, which are all nationally rare communities. Mature woodland occurs over much of the site and in areas where yew dominates, the dense canopy presents little opportunity for the development of shrub and ground floras. In other parts of Fairmile Bottom there is a higher proportion of beech Fagus sylvatica within the canopy and as high cut beech coppice 'stubs'. Where yew is at a minimum there is a sparse field layer of false brome grass Brachypodium sylvaticum and bramble Rubus fruticosus. Yew scrub is invading the open downland. Areas of woodland containing oak Quercus robur, ash Fraxinus excelsior and beech with coppice hazel Corylus avellana are found at Fairmile Bottom. The field layer is varied in its diversity consisting of scattered false brome and ivy Hedera helix on the lower slopes and wood spurge Euphorbia amygdaloides, bracken Pteridium aquilinum and bluebell Hyacinthoides non-scripta where the soil is deeper towards the top of the slope. Small patches of species rich chalk grassland are scattered throughout the site. The sward is dominated by sheep’s fescue Festuca ovina and upright brome grasses Bromus erectus, amongst which grow the herbs salad burnet Poterium sanguisorba, yellow rattle Rhinanthus minor and common milkwort Polygala vulgaris. To the south, the main area of grassland is composed of coarser grasses including tor grass Brachypodium pinnatum and cock’s foot Dactylis glomerata. This area is subject to considerable trampling from visitors but islands of finer rabbit grazed turf still remain where wild thyme Thymus praecox, eyebright Euphrasia nemorosa and mouse ear hawkweed Pilosella officinarum are present. Orchid species at Fairmile Bottom include the bee Ophrys apifera, frog Dactylorhiza viridis and fragrant Gymnadenia conopsea orchids. The invertebrate fauna is rich and typical of the habitats present. The site supports an outstanding diversity of beetles Coleoptera including one species endangered with extinction which inhabits beech logs. The uncommon silver washed fritillary Argynnis paphia and the white admiral Limenitis camilla are amongst the many butterflies present.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
silver-washed fritillary Argynnis paphia LC butterfly nymphalidae
white admiral Limenitis camilla VU butterfly nymphalidae
bracken Pteridium aquilinum LC fern dennstaedtiaceae
tor grass Brachypodium pinnatum LC grass poaceae
wood false brome Brachypodium sylvaticum LC grass poaceae
upright brome Bromus erectus Not listed in GB list grass poaceae
cock's foot Dactylis glomerata LC grass poaceae
sheep's fescue Festuca ovina LC grass poaceae
frog orchid Dactylorhiza viridis VU herb orchidaceae
wood spurge Euphorbia amygdaloides LC herb euphorbiaceae
common eyebright Euphrasia nemorosa LC herb orobanchaceae
fragrant orchid Gymnadenia conopsea NT herb orchidaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
bee orchid Ophrys apifera LC herb orchidaceae
mouse_ear hawkweed Pilosella officinarum LC herb asteraceae
common milkwort Polygala vulgaris VU herb polygalaceae
salad burnet Poterium sanguisorba VU herb rosaceae
yellow-rattle Rhinanthus minor DD herb orobanchaceae
bramble Rubus fruticosus LC herb rosaceae
creeping thyme Thymus praecox Not listed in GB list herb lamiaceae
hazel Corylus avellana LC tree corylaceae
beech Fagus sylvatica LC tree fabiaceae
ash Fraxinus excelsior LC tree oleaceae
common oak Quercus robur LC tree fagaceae
yew Taxus baccata LC tree taxaceae
ivy Hedera helix LC woody climber araliaceae

Plant communities

W20 — Montane scrub

Salix lapponum-Luzula sylvatica scrub

Salix arbuscula, Salix cinerea, Salix lapponum, Salix myrsinites, Salix phylicifolia, Salix reticulata, Empetrum nigrum, Calluna vulgaris, Salix lanata, Vaccinium myrtillus, Vaccinium uliginosum, Carex atrata, Carex bigelowii, Carex binervis, Carex flacca, Luzula multiflora, Luzula sylvatica, Huperzia selago, Selaginella selaginoides, Aulacomnium palustre, Mnium hornum, Philonotis fontana, Plagiomnium undulatum, Rhizomnium punctatum, Dicranum bonjeanii, Dicranum majus, Dicranum scoparium, Fissidens adianthoides, Racomitrium lanuginosum, Calliergonell cuspidatum, Ctenidium molluscum, Hylocomium splendens, Hypnum callichroum, Hypnum cupressiforme, Palustriella commutatum, Plagiothecium denticulatum, Plagiothecium undulatum, Pleurozium schreberi, Ptilium crista-castrensis, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Sanionia uncinata, Scorpidium revolvens, Thuidium tamariscinum, Atrichum undulatum, Polytrichastrum alpinum, Sphagnum capillifolium, Sphagnum fallax, Sphagnum girgensohnii, Sphagnum palustre, Sphagnum russowii, Sphagnum squarrosum, Sphagnum subnitens, Sphagnum teres, Barbilophozia barbata, Chiloscyphus polyanthos, Diplophyllum albicans, Lophocolea bidentata, Plagiochila porelloides, Ptilidium ciliare, Scapania undulata, Cladonia squamosa, Peltigera canina, Angelica sylvestris, Caltha palustris, Hieraclium spp., Saussurea alpina, Solidago virgaurea, Campanula rotundifolia, Succisa pratensis, Valeriana officinalis, Rhodiola rosea, Vaccinium vitis-idaea, Thymus praecox, Epilobium anagallidifolium, Dactylorhiza viridis, Euphrasia officinalis, Rhinanthus minor, Oxalis acetosella, Oxyria digyna, Polygonum viviparum, Rumex acetosa, Anemone nemorosa, Ranunculus acris, Thalictrum alpinum, Alchemilla alpina, Alchemilla glabra, Filipendula ulmaria, Geum rivale, Galium boreale, Galium saxatile, Saxifraga aizoides, Saxifraga hypnoides, Saxifraga oppositifolia, Saxifraga stellaris, Viola riviniana, Agrostis canina, Agrostis capillaris, Anthoxanthum odoratum, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Nardus stricta, Dryopteris dilatata, Phegopteris connectilis

W21 — Hedgerow scrub, Mixed scrub

Crataegus monogyna-Hedera helix scrub

Hedera helix, Salix cinerea, Acer pseudoplatanus, Ilex aquifolium, Betula pendula, Corylus avellana, Fagus sylvatica, Quercus robur, Fraxinus excelsior, Malus sylvestris, Sorbus aria, Taxus baccata, Ulmus glabra, Ulmus procera, Sambucus nigra, Viburnum lantana, Euonymus europaeus, Cornus sanguinea, Juniperus communis, Ligustrum vulgare, Clematis vitalba, Rhamnus cathartica, Crataegus laevigata, Crataegus monogyna, Prunus spinosa, Juncus effusus, Plagiomnium undulatum, Brachythecium rutabulum, Kindbergia praelonga, Rhynchostegium confertum, Tamus communis, Heracleum sphondylium, Torilis japonica, Arum maculatum, Arctium minus, Cirsium arvense, Lonicera periclymenum, Moehringia trinervia, Silene dioica, Stellaria graminea, Stellaria holostea, Stellaria media agg., Calystegia sepium, Mercurialis perennis, Geranium robertianum, Iris foetidissima, Glechoma hederacea, Lamium purpureum, Origanum vulgare, Stachys sylvatica, Teucrium scorodonia, Allium ursinum, Hyacinthoides non-scripta, Circaea lutetiana, Rumex sanguineus, Anemone nemorosa, Ranunculus repens, Fragaria vesca, Geum urbanum, Potentilla sterilis, Poterium sanguisorba, Rosa arvensis, Rosa canina, Rubia peregrina, Rubus fruticosus agg., Galium aparine, Urtica dioica, Viola riviniana, Anisantha sterilis, Arrhenatherum elatius, Brachypodium pinnatum, Brachypodium sylvaticum, Bromopsis erecta, Dactylis glomerata, Elytrigia repens, Holcus lanatus, Holcus mollis, Poa trivialis, Asplenium scolopendrium, Pteridium aquilinum, Dryopteris filix-mas

W22 — Hedgerow scrub, Mixed scrub

Prunus spinosa-Rubus fruticosus scrub

Hedera helix, Acer campestre, Corylus avellana, Ulex europaeus, Prunus spinosa, Plagiomnium undulatum, Brachythecium rutabulum, Eurhynchium striatum, Kindbergia praelonga, Thuidium tamariscinum, Atrichum undulatum, Lophocolea bidentata, Achillea millefolium, Cardamine flexuosa, Lonicera periclymenum, Moehringia trinervia, Silene dioica, Silene uniflora, Stellaria media agg., Mercurialis perennis, Geranium robertianum, Stachys sylvatica, Teucrium scorodonia, Hyacinthoides non-scripta, Oxalis acetosella, Digitalis purpurea, Plantago lanceolata, Veronica chamaedrys, Armeria maritima, Rumex acetosa, Filipendula ulmaria, Geum urbanum, Rosa canina, Rubus fruticosus agg., Rubus idaeus, Galium aparine, Urtica dioica, Viola riviniana, Agrostis capillaris, Brachypodium sylvaticum, Dactylis glomerata, Festuca rubra, Holcus lanatus, Holcus mollis, Poa trivialis, Asplenium scolopendrium, Pteridium aquilinum, Dryopteris borreri, Dryopteris filix-mas

W25 — Bracken scrub

Pteridium aquilinum-Rubus fruticosus underscrub

Hedera helix, Acer pseudoplatanus, Fagus sylvatica, Quercus robur, Fraxinus excelsior, Sambucus nigra, Ulex europaeus, Crataegus monogyna, Prunus spinosa, Luzula multiflora, Mnium hornum, Brachythecium rutabulum, Kindbergia praelonga, Angelica sylvestris, Conopodium majus, Heracleum sphondylium, Arum maculatum, Cirsium arvense, Lonicera periclymenum, Silene dioica, Stellaria holostea, Mercurialis perennis, Geranium robertianum, Glechoma hederacea, Teucrium scorodonia, Hyacinthoides non-scripta, Chamerion angustifolium, Circaea lutetiana, Digitalis purpurea, Rumex acetosa, Anemone nemorosa, Ficaria verna, Potentilla erecta, Rosa arvensis, Rosa canina, Rubus fruticosus agg., Rubus idaeus, Galium aparine, Galium mollugo sens.lat., Galium saxatile, Urtica dioica, Viola riviniana, Agrostis capillaris, Anthoxanthum odoratum, Arrhenatherum elatius, Dactylis glomerata, Festuca rubra, Holcus lanatus, Holcus mollis, Poa trivialis, Pteridium aquilinum, Dryopteris dilatata, Dryopteris filix-mas