Chanctonbury Hill

Site of Special Scientific Interest · 50.8963, -0.3786

Condition (Natural England)

Unfavourable Recovering (2) Favourable (5)
UnitFeatureConditionArea (ha)Assessed
TQ133119 Unfavourable Recovering 16.01 2014-06-13
TQ135117 Unfavourable Recovering 16.01 2014-06-13
TQ135123 Favourable 11.09 2014-03-12
TQ137123 Favourable 55.59 2020-10-27
TQ139120 Favourable 55.59 2020-10-27
TQ139121 Favourable 11.09 2014-03-12
TQ145117 Favourable 55.59 2020-10-27

Geology & landscape

Rock Type: Chalk

Birds & fish recorded

Birds

SpeciesSeason
meadow pipit Breeding
nightingale Breeding

Description

Area, 78.6 ha. 194.22 ac. Description This site lies on the steep chalk escarpment of the South Downs and is dominated by a nationally uncommon woodland type. There are also areas of chalk grassland, another habitat that has a restricted distribution nationally. The site supports a rich community of breeding birds. Chalk grassland has developed at this site over thin rendzina soils and is rich in flowering plants and associated invertebrate life. The woodland has developed on deeper soils at the foot of the escarpment but has now colonised much of the former grassland further up the slope. The maple variant of the calcareous pedunculate oak ash beech woodland type dominates the wood. Chalk scrub is well established in parts of the woodland and is scattered throughout the grassland. A dewpond at the site carries two of the three native British newts; one of these, the great crested newt Triturus cristatus, is specially protected under the Wildlife and Countryside Act. The dominant woodland trees are beech Fagus sylvatica and ash Fraxinus excelsior but pedunculate oak Quercus robur, field maple Acer campestre, coppiced hazel Corylus avellana, sycamore Acer pseudoplatanus and the occasional yew Taxus baccata also occur. Under the densest beech canopies the shrub and field layers are poorly developed but elsewhere there are rich plant communities; these include shrubs such as dogwood Cornus sanguinea, wild privet Ligustrum vulgare, wayfaring tree Viburnum lantana and elder Sambucus nigra above a field layer which is dominated by dog's mercury Mercurialis perennis, ivy Hedera helix and enchanter’s nightshade Circaea lutetiana. The chalk grassland is of the sheep's fescue Festuca ovina upright brome Bromus erectus type but tor grass Brachypodium pinnatum is dominant in places. Herbs found in the grassland include salad burnet Poterium sanguisorba, yellow rattle Rhinanthus minor, marjoram Origanum vulgare, wild basil Clinopodium vulgare, toadflax Linaria vulgaris and harebell Campanula rotundifolia. Chalk scrub is scattered throughout the grassland and forms dense belts in places. The scrub consists of ash, elder, wayfaring tree, wild privet and hawthorn Crataegus monogyna. Scrub and grassland support downland butterflies such as the chalk hill blue Polyommatus coridon. The site has records for over sixty species of breeding bird. These include downland species such as meadow pipit and corn bunting and woodland birds like green woodpecker, nuthatch and nightingale.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
great crested newt Triturus cristatus LC amphibian salamandridae
corn bunting Emberiza calandra CR (Breeding) bird-bunting emberizidae
nuthatch Sitta europaea LC (Breeding) bird-nuthatch sittidae
meadow pipit Anthus pratensis LC (Breeding) bird-pipit motacillidae
nightingale Luscinia megarhynchos VU (Breeding) bird-robin muscicapidae
green woodpecker Picus viridis LC (Breeding) bird-woodpecker picidae
chalkhill blue Polyommatus coridon VU butterfly lycaenidae
tor grass Brachypodium pinnatum LC grass poaceae
upright brome Bromus erectus Not listed in GB list grass poaceae
sheep's fescue Festuca ovina LC grass poaceae
harebell Campanula rotundifolia LC herb campanulaceae
enchanter's nightshade Circaea lutetiana LC herb onagraceae
wild basil Clinopodium vulgare LC herb lamiaceae
common toadflax Linaria vulgaris LC herb plantaginaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
wild marjoram Origanum vulgare LC herb lamiaceae
salad burnet Poterium sanguisorba VU herb rosaceae
yellow-rattle Rhinanthus minor DD herb orobanchaceae
dogwood Cornus sanguinea LC shrub cornaceae
hawthorn Crataegus monogyna LC shrub rosaceae
wild privet Ligustrum vulgare LC shrub oleaceae
elder Sambucus nigra LC shrub caprifoliaceae
wayfaring tree Viburnum lantana LC shrub caprifoliaceae
field maple Acer campestre LC tree aceraceae
sycamore Acer pseudoplatanus Not listed in GB list tree aceraceae
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

W12 — Beech wood

Fagus sylvatica-Mercurialis perennis woodland

Hedera helix, Acer pseudoplatanus, Ilex aquifolium, Betula pendula, Betula pubescens, Carpinus betulus, Corylus avellana, Fagus sylvatica, Quercus robur, Aesculus hippocastanum, Fraxinus excelsior, Prunus avium, Sorbus aria, Taxus baccata, Ulmus glabra, Buxus sempervirens, Sambucus nigra, Viburnum lantana, Viburnum opulus, Euonymus europaeus, Cornus sanguinea, Ligustrum vulgare, Clematis vitalba, Crataegus monogyna, Daphne laureola, Carex flacca, Carex sylvatica, Mnium hornum, Plagiomnium undulatum, Fissidens taxifolius, Brachythecium rutabulum, Kindbergia praelonga, Thamnobryum alopecurum, Tamus communis, Anthriscus sylvestris, Heracleum sphondylium, Sanicula europaea, Arum maculatum, Arctium minus, Mycelis muralis, Solidago virgaurea, Cynoglossum officinale, Alliaria petiolata, Campanula trachelium, Lonicera periclymenum, Silene dioica, Euphorbia amygdaloides, Mercurialis perennis, Geranium robertianum, Hypericum hirsutum, Iris foetidissima, Ajuga reptans, Glechoma hederacea, Lamiastrum galeobdolon, Stachys sylvatica, Teucrium scorodonia, Allium ursinum, Hyacinthoides non-scripta, Chamerion angustifolium, Circaea lutetiana, Epilobium montanum, Cephalanthera damasonium, Neottia nidus-avis, Neottia ovata, Veronica chamaedrys, Rumex sanguineus, Anemone nemorosa, Ficaria verna, Ranunculus bulbosus, Fragaria vesca, Geum urbanum, Rosa canina, Rubus fruticosus agg., Galium aparine, Galium mollugo sens.lat., Galium odoratum, Urtica dioica, Viola riviniana, Anisantha sterilis, Arrhenatherum elatius, Brachypodium sylvaticum, Bromopsis ramosa, Dactylis glomerata, Deschampsia cespitosa, Melica uniflora, Milium effusum, Poa nemoralis, Poa trivialis, Asplenium scolopendrium, Dryopteris dilatata, Dryopteris filix-mas

W14 — Beech wood, Wood pasture

Fagus sylvatica-Rubus fruticosus woodland

Hedera helix, Salix caprea, Acer pseudoplatanus, Ilex aquifolium, Betula pendula, Betula pubescens, Corylus avellana, Fagus sylvatica, Quercus robur, Fraxinus excelsior, Pinus sylvestris, Prunus avium, Sorbus aria, Sorbus aucuparia, Taxus baccata, Ulmus glabra, Sambucus nigra, Ruscus aculeatus, Ligustrum vulgare, Carex remota, Carex sylvatica, Luzula pilosa, Mnium hornum, Dicranella heteromalla, Dicranum scoparium, Fissidens taxifolius, Brachythecium rutabulum, Hypnum cupressiforme, Isothecium myosuroides, Kindbergia praelonga, Plagiothecium denticulatum, Plagiothecium undulatum, Pseudotaxiphyllum elegans, Thuidium tamariscinum, Atrichum undulatum, Polytrichum commune, Polytrichum formosum, Arum maculatum, Lonicera periclymenum, Moehringia trinervia, Stellaria media agg., Euphorbia amygdaloides, Mercurialis perennis, Hypericum pulchrum, Lamiastrum galeobdolon, Hyacinthoides non-scripta, Circaea lutetiana, Epipactis helleborine, Oxalis acetosella, Digitalis purpurea, Anemone nemorosa, Ranunculus repens, Geum urbanum, Rubus fruticosus agg., Rubus idaeus, Galium odoratum, Galium verum, Urtica dioica, Viola riviniana, Agrostis capillaris, Agrostis stolonifera, Brachypodium sylvaticum, Bromopsis ramosa, Dactylis glomerata, Deschampsia cespitosa, Deschampsia flexuosa, Holcus lanatus, Holcus mollis, Melica uniflora, Milium effusum, Poa nemoralis, Poa trivialis, Schedonorus giganteus, Pteridium aquilinum, Dryopteris dilatata, Dryopteris filix-mas

W15 — Beech wood, Wood pasture

Fagus sylvatica-Deschampsia flexuosa woodland

Hedera helix, Acer pseudoplatanus, Ilex aquifolium, Betula pendula, Betula pubescens, Fagus sylvatica, Quercus hybrid, Quercus petraea, Quercus robur, Pinus sylvestris, Sorbus aucuparia, Taxus baccata, Calluna vulgaris, Rhododendron ponticum, Vaccinium myrtillus, Ruscus aculeatus, Carex pilulifera, Luzula pilosa, Luzula sylvatica, Mnium hornum, Orthodontium lineare, Dicranella heteromalla, Dicranum scoparium, Leucobryum glaucum, Hylocomium splendens, Hypnum cupressiforme, Kindbergia praelonga, Plagiothecium undulatum, Pseudotaxiphyllum elegans, Rhytidiadelphus loreus, Thuidium tamariscinum, Polytrichum formosum, Tetraphis pellucida, Calypogeia fissa, Diplophyllum albicans, Gymnocolea inflata, Lepidozia reptans, Cladonia fimbriata, Cladonia squamules, Lonicera periclymenum, Hyacinthoides non-scripta, Chamerion angustifolium, Oxalis acetosella, Rubus fruticosus agg., Melanpyrum pratense, Agrostis capillaris, Deschampsia flexuosa, Holcus lanatus, Holcus mollis, Molinia caerulea, Poa nemoralis, Blechnum spicant, Pteridium aquilinum, Dryopteris dilatata

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