Dinham Meadows

Site of Special Scientific Interest · 51.6225, -2.7566

Also within

Gwent County

Geology & landscape

Geological Period: Carboniferous · Rock Type: Carboniferous Limestone, Limestone

Description

Description A series of five grassland areas which are part of the same management unit and have been traditionally managed as hay meadows and pasture since the 1930s. Together they constitute the largest area of unimproved grassland in the county. Four are managed for hay and the fifth, located in an area of very thin soils and rock exposures, supports only a sparse cover. Soil types range from deep coarse loams with slight seasonal waterlogging through fine loams of intermediate depths with a moderate calcareous influence to bare rock of Carboniferous Limestone. Whilst the main grassland community type can be referred to the Centaurea nigraCynosurus cristatus mesotrophic grassland type, the range of soils types is reflected in the presence of other communities. On the deeper loams there are examples of the Arrhenatherum elatius coarse grassland community, whilst the shallower base rich soils support a community with strong affinities to the Koeleria macrantha sub community of the Festuca ovinaCarlina vulgaris limestone grassland type. There is a diverse range of both grass and herb species. Notable species of the hay meadows include adder’s tongue Ophioglossum vulgatum, pepper saxifrage Silaum silaus, cross wort Cruciata laevipes, grass vetchling Lathyrus nissolia, greater knapweed Centaurea scabiosa and rockrose Helianthemum nummularium, whilst the limestone grassland areas have abundant quaking grass Briza media, heath grass Danthonia decumbens, bee orchid Ophrys apifera and autumn lady’s tresses Spiranthes spiralis. These areas are also important for the diverse assemblage of invertebrates characteristic of grassland habitats. Species of Diptera and Lepidoptera are particularly well represented including the rare and notable dingy skipper Erynnis tages, grizzled skipper Pyrgus malvae and forester moth Adscita statices.

Species mentioned

English name
search for this in other sites
Latin name
search with Google
IUCN / Red List Type Family
dingy skipper Erynnis tages LC butterfly hesperiidae
grizzled skipper Pyrgus malvae VU butterfly hesperiidae
adders-tongue fern Ophioglossum vulgatum LC fern ophioglossaceae
false oat grass Arrhenatherum elatius LC grass poaceae
quaking grass Briza media VU grass poaceae
crested dog's tail Cynosurus cristatus LC 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
carline thistle Carlina vulgaris LC herb asteraceae
black knapweed Centaurea nigra LC herb asteraceae
greater knapweed Centaurea scabiosa LC herb asteraceae
cross-wort Cruciata laevipes LC herb rubiaceae
rock roses Helianthemum nummularium VU herb cistaceae
grass vetchling Lathyrus nissolia LC herb fabaceae
bee orchid Ophrys apifera LC herb orchidaceae
pepper saxifrage Silaum silaus EN herb saxifragaceae
autumn lady's tresses Spiranthes spiralis LC herb orchidaceae
the forester Adscita statices Not listed in GB list moth zygaenidae

Plant communities

MG7 — Coastal floodplain grazing marsh, Mesotrophic grassland

Lolium perenne leys and related grasslands Lolium perenne-Alopecurus pratensis grassland

Juncus inflexus, Brachythecium rutabulum, Kindbergia praelonga, Achillea millefolium, Bellis perennis, Cirsium arvense, Cirsium vulgare, Hypochaeris radicata, Scorzoneroides autumnalis, Taraxacum officianalis, Capsella bursa-pastoris, Cardamine pratensis, Cerastium fontanum, Cerastium glomeratum, Stellaria media agg., Lathyrus pratensis, Trifolium dubium, Trifolium pratense, Trifolium repens, Vicia cracca, Vicia sativa, Plantago lanceolata, Plantago major, Rumex acetosa, Rumex conglomeratus, Rumex crispus, Rumex obtusifolius, Ranunculus acris, Ranunculus bulbosus, Ranunculus repens, Agrostis capillaris, Agrostis stolonifera, Alopecurus pratensis, Anthoxanthum odoratum, Arrhenatherum elatius, Bromus hordeaceous, Dactylis glomerata, Elytrigia repens, Festuca rubra, Holcus lanatus, Lolium multiflorum, Lolium perenne, Phleum pratense, Poa annua, Poa pratensis, Poa trivialis, Schedonorus pratensis

MG9 — Brownfield, Coastal floodplain grazing marsh, Mesotrophic grassland

Holcus lanatus-Deschampsia cespitosa grassland

Carex hirta, Carex nigra, Carex panicea, Juncus articulatus, Juncus effusus, Juncus inflexus, Brachythecium rutabulum, Calliergonell cuspidatum, Kindbergia praelonga, Rhytidiadelphus squarrosus, Angelica sylvestris, Conopodium majus, Heracleum sphondylium, Achillea millefolium, Achillea ptarmica, Centaurea nigra, Cirsium arvense, Cirsium palustre, Cirsium vulgare, Jacobaea vulgaris, Leucanthemum vulgare, Pulicaria dysenterica, Scorzoneroides autumnalis, Senecio aquaticus, Taraxacum officianalis, Cardamine pratensis, Succisa pratensis, Cerastium fontanum, Lathyrus pratensis, Lotus corniculatus, Lotus pedunculatus, Trifolium pratense, Trifolium repens, Vicia cracca, Hypericum perforatum, Mentha aquatica, Dactylorhiza fuchsii, Plantago lanceolata, Rumex acetosa, Rumex conglomeratus, Rumex crispus, Rumex obtusifolius, Rumex sanguineus, Primula veris, Primula vulgaris, Ficaria verna, Ranunculus acris, Ranunculus repens, Agrimonia eupatoria, Filipendula ulmaria, Potentilla anserina, Potentilla erecta, Rubus fruticosus agg., Galium verum, Silaum silaus, Urtica dioica, Agrostis capillaris, Agrostis stolonifera, Alopecurus pratensis, Anthoxanthum odoratum, Arrhenatherum elatius, Briza media, Cynosurus cristatus, Dactylis glomerata, Danthonia decumbens, Deschampsia cespitosa, Festuca rubra, Glyceria fluitans, Holcus lanatus, Holcus mollis, Hordeum secalinum, Lolium perenne, Phalaris arundinacea, Phleum pratense, Poa pratensis, Poa trivialis, Schedonorus arundinaceus, Schedonorus pratensis, Trisetum flavescens