Newmarket Heath

Site of Special Scientific Interest · 52.2349, 0.3699

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Cambridgeshire CountySuffolk County

Condition (Natural England)

Favourable (2) Unfavourable Recovering (1)
UnitFeatureConditionArea (ha)Assessed
TL612627 — Favourable 244.26 2013-02-06
TL619622 — Favourable 244.26 2013-02-06
TL662647 — Unfavourable Recovering 35.04 2013-02-06

Habitats

Upland calcareous grassland

Geology & landscape

Rock Type: Chalk

Landscape processes: Glacial, Periglacial

Description

Description This site lies on the Middle Chalk near Newmarket. It is by far the largest expanse of unimproved chalk grassland remaining in Cambridgeshire. Grasslands of this type are now very scarce in Britain, largely as a result of reclamation for agriculture. Newmarket Heath is of particular importance for the presence of areas of chalk heath, a rare vegetation type in Britain as a whole. This is the sole Cambridgeshire example and is of great geographical importance in providing a link between the Brecklands heaths and the chalk heaths of the Chilterns. There is a high diversity of flowering plants, including a large population of a nationally rare species listed in the British Red Data Book¹ and at least five nationally uncommon species. The site is of geomorphological interest by reason of the occurrence of close spaced polygonal patterning of periglacial origin. Such polygons, usually 5 -8 metres in diameter, are most regular and distinct on the higher, more levelland but, on areas of steeper land, the polygons extend into a fine stripe pattern. These patterns, widespread in Breckland where similar substrates occur, are attributed to frost heave in a periglacial climate causing upthrust of the underlying chalk rubble ultimately producing areas of shallow highly calcareous soils surrounded by a polygonal network of deeper, more acidic soils. The number of sites where such polygons are preserved beneath semi natural swards is small; such an association is of particular interest at Newmarket Heath since the presence of polygons exerts a strong influence upon the distribution here of chalk loving and acid loving plants. The chalk grassland is representative of the type found in eastern England. It is characterised by the dominance of upright brome Bromus erectus and sheep’s fescue Festuca ovina, with areas of meadow oat grass Avenula pratensis and tor grass Brachypodium pinnatum. Other grasses of interest include quaking grass Briza mediand crested hair grass Koeleria macrantha. A very wide variety of characteristic chalkland herbs are present including salad burnet Poterium sanguisorba, common rock rose Helianthemum nummularium, dropwort Filipendula vulgaris, autumn gentian Gentianella amarella, wild thyme Thymus praecox, horseshoe vetch Hippocrepis comosa, purple milk vetch Astragalus danicus, sainfoin Onobrychis viciifolia, kidney vetch Anthyllis vulneraria and lesser meadow rue Thalictrum minus. Of particular interest is the number of nationally scarce species present, many of which are restricted to areas of calcareous grassland in eastern England. They include pasque flower Pulsatilla vulgaris, spring cinquefoil Potentilla tabernaemontani, bastard toadflax Thesium humifusum, field fleawort Senecio integrifolius and an uncommon eyebright Euphrasia pseudokerneri. Areas of chalk heath occur where wind borne glacial drift covers the chalk and gives rise to more acid soils. Here both chalk loving and acid loving plants grow together in an intimate mixture. Characteristic acid loving plants include heath grass Danthonia decumbens, heather Calluna vulgaris, tormentil Potentilla erecta, heath dog violet Viola canina and saw wort Serratula tinctoria. Of additional interest is the presence of a large population of the nationally rare spiked speedwell Veronica spicata ssp. spicata, which has its centre of distribution in nearby Breckland. A number of rare and uncommon insects have been recorded in the past and some entomological interest may still remain. ¹ Perring, F. H. and Farrell, L. 1983. British Red Data Books, 1 Vascular Plants 2nd Edition. Lincoln, Royal Society for Nature Conservation.

Species mentioned

English name
search for this in other sites		 Latin name
search with Google		 IUCN / Red List Type Family
meadow oat grass Avenula pratensis Not listed in GB list grass poaceae
tor grass Brachypodium pinnatum LC grass poaceae
upright brome Bromus erectus Not listed in GB list grass poaceae
heath grass Danthonia decumbens NT grass poaceae
sheep's fescue Festuca ovina LC grass poaceae
crested hair-grass Koeleria macrantha NT grass poaceae
lady's fingers (kidney vetch) Anthyllis vulneraria NT herb fabaceae
purple milk vetch Astragalus danicus EN herb fabaceae
chalk eyebright Euphrasia pseudokerneri NT herb orobanchaceae
dropwort Filipendula vulgaris LC herb rosaceae
autumn gentian Gentianella amarella LC herb gentianaceae
rock roses Helianthemum nummularium VU herb cistaceae
horseshoe vetch Hippocrepis comosa VU herb fabaceae
sainfoin Onobrychis viciifolia LC herb fabaceae
tormentil Potentilla erecta LC herb rosaceae
spring cinquefoil Potentilla tabernaemontani Not listed in GB list herb rosaceae
salad burnet Poterium sanguisorba VU herb rosaceae
pasque flower Pulsatilla vulgaris EN herb ranunculaceae
field fleawort Senecio integrifolius Not listed in GB list herb asteraceae
saw wort Serratula tinctoria VU herb asteraceae
lesser meadow rue Thalictrum minus LC herb ranunculaceae
bastard toadflax Thesium humifusum VU herb santalaceae
creeping thyme Thymus praecox Not listed in GB list herb lamiaceae
spiked speedwell Veronica spicata LC herb plantaginaceae
heath dog violet Viola canina EN herb violaceae
bell heather or ling Calluna vulgaris NT shrub dwarf ericaceae

Plant communities

CG9 — Limestone pavement, Lowland calcareous grassland, Upland calcareous grassland

Sesleria albicans-Galium sterneri grassland

Empetrum nigrum subsp.nigrum, Calluna vulgaris, Carex capillaris, Carex caryophyllea, Carex eragrostis, Carex flacca, Carex hostiana, Carex panicea, Carex pulicaris, Kobresia simpliciuscula, Selaginella selaginoides, Rhodobryum roseum, Dicranum scoparium, Ditrichum flexicaule, Fissidens dubius, Encalypta streptocarpa, Racomitrium canescens sens.lat., Racomitrium lanuginosum, Ctenidium molluscum, Homalothecium lutescens, Hylocomium splendens, Hypnum cupressiforme, Neckera crispa, Pseudoscleropodium purum, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Rhytidium rugosum, Thuidium tamariscinum, Polytrichum juniperinum, Tortella tortuosa, Barbilophozia barbata, Blepharostoma trichophyllum, Frullania tamarisci, Lophocolea bidentata, Plagiochila asplenioides, Scapania aspera, Tritomaria quinquedentata, Cetraria islandica, Cladonia pocillum, Cladonia rangiformis, Cornicularia aculeata, Pimpinella saxifraga, Achillea millefolium, Antennaria dioica, Bellis perennis, Carlina vulgaris, Cirsium vulgare, Leontodon hispidus, Pilosella officinarum, Taraxacum officianalis, Myosotis alpestris, Cochlearia alpina, Draba incana, Campanula rotundifolia, Scabiosa columbaria, Succisa pratensis, Cerastium fontanum, Minuartia verna, Parnassia palustris, Helianthemum oelandicum icanum, Sedum acre, Anthyllis vulneraria, Hippocrepis comosa, Lotus corniculatus, Trifolium repens, Gentiana verna, Gentianella amarella, Hypericum pulchrum, Thymus praecox, Pinguicula vulgaris, Linum catharticum, Epipactis atrorubens, Euphrasia confusa, Euphrasia officinalis, Plantago lanceolata, Plantago maritima, Veronica officinalis, Polygala vulgaris, Polygonum viviparum, Primula farinosa, Primula vulgaris, Thalictrum minus, Dryas octopetala, Potentilla erecta, Potentilla tabernaemontani, Poterium sanguisorba, Asperula cynanchica, Galium sterneri, Galium verum, Saxifraga hypnoides, Viola hirta, Viola riviniana, Viola rupestris, Agrostis capillaris, Anthoxanthum odoratum, Avenula pratensis, Brachypodium sylvaticum, Briza media, Cynosurus cristatus, Dactylis glomerata, Danthonia decumbens, Deschampsia cespitosa, Festuca ovina, Festuca rubra, Koeleria macrantha, Molinia caerulea, Sesleria caerulea

CG10 — Brownfield, Limestone pavement, Upland calcareous grassland

Festuca ovina-Agrostis capillaris-Thymus praecox grassland

Empetrum nigrum, Empetrum nigrum subsp.nigrum, Calluna vulgaris, Erica cinerea, Vaccinium myrtillus, Carex binervis, Carex caryophyllea, Carex demissa, Carex flacca, Carex nigra, Carex panicea, Carex pilulifera, Carex pulicaris, Juncus squarrosus, Luzula campestris, Luzula multiflora, Luzula sylvatica, Selaginella selaginoides, Breutelia chrysocoma, Bryum pallens, Bryum pseudotriquetrum, Mnium hornum, Plagiomnium undulatum, Rhizomnium punctatum, Dicranum scoparium, Ditrichum flexicaule, Fissidens adianthoides, Fissidens osmundoides, Racomitrium canescens sens.lat., Racomitrium lanuginosum, Calliergonell cuspidatum, Ctenidium molluscum, Hylocomium splendens, Hypnum cupressiforme, Hypnum jutlandicum, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Sanionia uncinata, Thuidium delicatulum, Thuidium tamariscinum, Tortella tortuosa, Frullania tamarisci, Lophocolea bidentata, Plagiochila asplenioides, Ptilidium ciliare, Scapania undulata, Cetraria islandica, Peltigera canina, Angelica sylvestris, Achillea millefolium, Antennaria dioica, Bellis perennis, Cirsium palustre, Hieraclium spp., Hypochaeris radicata, Jacobaea vulgaris, Pilosella officinarum, Scorzoneroides autumnalis, Solidago virgaurea, Cardamine pratensis, Campanula rotundifolia, Succisa pratensis, Cerastium fontanum, Silene acaulis, Vaccinium vitis-idaea, Lathyrus montanus, Lotus corniculatus, Trifolium repens, Gentianella campestris, Hypericum pulchrum, Thymus praecox, Pinguicula vulgaris, Linum catharticum, Euphrasia confusa, Euphrasia officinalis, Euphrasia scottica, Oxalis acetosella, Plantago lanceolata, Plantago maritima, Veronica officinalis, Polygala serpyllifolia, Polygonum viviparum, Rumex acetosa, Primula vulgaris, Ranunculus acris, Ranunculus repens, Thalictrum alpinum, Alchemilla alpina, Alchemilla filicaulis, Alchemilla glabra, Alchemilla wichurae, Alchemilla xanthochlora, Filipendula ulmaria, Geum rivale, Potentilla crantzii, Potentilla erecta, Potentilla sterilis, Rubus idaeus, Galium boreale, Galium saxatile, Galium sterneri, Galium verum, Saxifraga aizoides, Saxifraga oppositifolia, Viola riviniana, Agrostis canina, Agrostis capillaris, Aira praecox, Anthoxanthum odoratum, Avenula pratensis, Briza media, Cynosurus cristatus, Danthonia decumbens, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Holcus lanatus, Koeleria macrantha, Molinia caerulea, Nardus stricta, Poa pratensis, Blechnum spicant, Pteridium aquilinum, Botrychium lunaria, Thelypteris limbosperma

CG11 — Upland calcareous grassland

Festuca ovina-Agrostis capillaris-Alchemilla alpina grass-heath

Empetrum nigrum, Calluna vulgaris, Erica tetralix, Vaccinium myrtillus, Salix herbacea, Carex bigelowii, Carex binervis, Carex caryophyllea, Carex flacca, Carex panicea, Carex pilulifera, Carex pulicaris, Trichophorum cespitosum, Juncus squarrosus, Juncus trifidus, Luzula campestris, Luzula multiflora, Luzula spicata, Luzula sylvatica, Diphasiastrum alpinum, Huperzia selago, Selaginella selaginoides, Breutelia chrysocoma, Mnium hornum, Plagiomnium undulatum, Dicranum scoparium, Racomitrium canescens sens.lat., Racomitrium lanuginosum, Ctenidium molluscum, Hylocomium splendens, Hypnum cupressiforme, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Sanionia uncinata, Thuidium delicatulum, Thuidium tamariscinum, Pogonatum urnigerum, Polytrichastrum alpinum, Barbilophozia lycopodioides, Diplophyllum albicans, Frullania tamarisci, Nardia scalaris, Ptilidium ciliare, Tritomaria quinquedentata, Cetraria islandica, Cladonia pyxidata, Cladonia uncialis, Peltigera canina, Achillea millefolium, Antennaria dioica, Gnaphalium supinum, Hieraclium spp., Scorzoneroides autumnalis, Taraxacum officianalis, Campanula rotundifolia, Succisa pratensis, Cerastium alpinum, Cerastium fontanum, Minuartia sedoides, Silene acaulis, Vaccinium vitis-idaea, Lathyrus montanus, Trifolium repens, Thymus praecox, Pinguicula vulgaris, Linum catharticum, Narthecium ossifragum, Dactylorhiza viridis, Euphrasia officinalis, Oxalis acetosella, Plantago lanceolata, Plantago maritima, Veronica officinalis, Veronica serpyllifolia, Armeria maritima, Polygonum viviparum, Rumex acetosa, Primula vulgaris, Anemone nemorosa, Ranunculus acris, Thalictrum alpinum, Trollius europaeus, Alchemilla alpina, Alchemilla filicaulis, Alchemilla xanthochlora, Filipendula ulmaria, Geum rivale, Potentilla crantzii, Potentilla erecta, Sibbaldia procumbens, Galium boreale, Galium saxatile, Saxifraga aizoides, Saxifraga hypnoides, Saxifraga oppositifolia, Viola canina, Viola palustris, Viola riviniana, Agrostis canina, Agrostis capillaris, Anthoxanthum odoratum, Danthonia decumbens, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Festuca vivipara, Molinia caerulea, Nardus stricta, Blechnum spicant, Botrychium lunaria, Thelypteris limbosperma

CG13 — Limestone pavement, Upland calcareous grassland

Dryas octopetala-Carex flacca heath

Salix repens, Empetrum nigrum, Empetrum nigrum subsp.nigrum, Calluna vulgaris, Juniperus communis, Arctostaphylos uva-ursi, Rubus saxatilis, Carex flacca, Carex panicea, Carex pulicaris, Carex rupestris, Schoenus nigricans, Luzula campestris, Selaginella selaginoides, Breutelia chrysocoma, Dicranum scoparium, Ditrichum flexicaule, Fissidens dubius, Racomitrium lanuginosum, Ctenidium molluscum, Entodon concinnus, Homalothecium lutescens, Hylocomium splendens, Hypnum cupressiforme, Loeskeobryum brevirostre, Neckera complanata, Neckera crispa, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Rhytidium rugosum, Thuidium delicatulum, Thuidium tamariscinum, Tortella tortuosa, Frullania tamarisci, Plagiochila asplenioides, Scapania undulata, Cladonia rangiformis, Solorina saccata, Daucus carota, Antennaria dioica, Bellis perennis, Centaurea nigra, Hypochaeris radicata, Jacobaea vulgaris, Pilosella officinarum, Scorzoneroides autumnalis, Solidago virgaurea, Taraxacum officianalis, Campanula rotundifolia, Succisa pratensis, Cerastium fontanum, Anthyllis vulneraria, Lathyrus montanus, Lotus corniculatus, Trifolium pratense, Trifolium repens, Gentianella amarella, Hypericum pulchrum, Thymus praecox, Pinguicula vulgaris, Linum catharticum, Epipactis atrorubens, Neottia ovata, Orchis mascula, Euphrasia confusa, Euphrasia officinalis, Plantago lanceolata, Plantago maritima, Plantago media, Polygala serpyllifolia, Polygonum viviparum, Primula vulgaris, Ranunculus acris, Thalictrum alpinum, Dryas octopetala, Filipendula ulmaria, Potentilla erecta, Galium saxatile, Galium verum, Saxifraga aizoides, Viola riviniana, Agrostis canina, Agrostis capillaris, Anthoxanthum odoratum, Avenula pratensis, Cynosurus cristatus, Danthonia decumbens, Festuca ovina, Festuca rubra, Festuca vivipara, Koeleria macrantha, Molinia caerulea, Polystichum aculeatum

U4 — Lowland dry acid grassland, Upland acid grassland, Upland calcareous grassland

Festuca ovina-Agrostis capillaris-Galium saxatile grassland

Calluna vulgaris, Vaccinium myrtillus, Carex binervis, Carex caryophyllea, Carex echinata, Carex nigra, Carex panicea, Carex pilulifera, Juncus effusus, Juncus squarrosus, Luzula campestris, Luzula multiflora, Luzula sylvatica, Mnium hornum, Dicranum scoparium, Racomitrium lanuginosum, Hylocomium splendens, Hypnum cupressiforme, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Thuidium tamariscinum, Polytrichastrum alpinum, Polytrichum commune, Lophocolea bidentata, Conopodium majus, Achillea millefolium, Bellis perennis, Cirsium arvense, Cirsium vulgare, Taraxacum officianalis, Campanula rotundifolia, Succisa pratensis, Cerastium fontanum, Lathyrus montanus, Lotus corniculatus, Trifolium pratense, Trifolium repens, Thymus praecox, Euphrasia officinalis, Oxalis acetosella, Plantago lanceolata, Veronica chamaedrys, Veronica officinalis, Polygala serpyllifolia, Rumex acetosa, Primula vulgaris, Anemone nemorosa, Ranunculus acris, Ranunculus repens, Potentilla erecta, Poterium sanguisorba, Galium saxatile, Galium verum, Viola lutea, Viola palustris, Viola riviniana, Agrostis canina, Agrostis capillaris, Alopecurus pratensis, Anthoxanthum odoratum, Avenula pratensis, Briza media, Cynosurus cristatus, Dactylis glomerata, Danthonia decumbens, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Holcus lanatus, Holcus mollis, Lolium perenne, Molinia caerulea, Nardus stricta, Poa annua, Poa pratensis, Blechnum spicant, Pteridium aquilinum, Chara curta

U5 — Upland acid grassland, Upland calcareous grassland

Nardus stricta-Galium saxatile grassland

Empetrum nigrum subsp.nigrum, Calluna vulgaris, Erica cinerea, Erica tetralix, Vaccinium myrtillus, Carex bigelowii, Carex binervis, Carex demissa, Carex nigra, Carex panicea, Carex pilulifera, Carex pulicaris, Eriophorum angustifolium, Eriophorum vaginatum, Trichophorum cespitosum, Juncus effusus, Juncus squarrosus, Luzula campestris, Luzula multiflora, Luzula sylvatica, Huperzia selago, Selaginella selaginoides, Aulacomnium palustre, Pohlia nutans, Campylopus flexuosus, Dicranella heteromalla, Dicranum scoparium, Racomitrium lanuginosum, Calliergonell cuspidatum, Hylocomium splendens, Hypnum cupressiforme, Plagiothecium undulatum, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Thuidium tamariscinum, Polytrichastrum alpinum, Polytrichum commune, Polytrichum formosum, Polytrichum juniperinum, Sphagnum papillosum, Barbilophozia floerkei, Calypogeia muelleriana, Diplophyllum albicans, Lophocolea bidentata, Lophozia ventricosa, Pleurozia purpurea, Ptilidium ciliare, Scapania gracilis, Cetraria islandica, Cladonia uncialis, Cirsium palustre, Scorzoneroides autumnalis, Campanula rotundifolia, Cerastium fontanum, Equisetum palustre, Vaccinium vitis-idaea, Trifolium repens, Narthecium ossifragum, Plantago lanceolata, Polygala serpyllifolia, Anemone nemorosa, Ranunculus acris, Alchemilla alpina, Potentilla erecta, Galium saxatile, Viola riviniana, Agrostis capillaris, Agrostis vinealis, Anthoxanthum odoratum, Danthonia decumbens, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Molinia caerulea, Nardus stricta, Blechnum spicant