Castletown
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Habitats
Geology & landscape
Rock Type: Basalt
Landscape processes: Volcanic / Igneous
Description
Castletown Lowland meadow This area is of special scientific interest because of its species-rich dry grassland. This type of grassland tends to occur where soils are freely draining and in particular where traditional farming practices have been maintained. As a result, it is not a widespread habitat in Northern Ireland where species-rich grasslands are often fragmented, consisting of individual fields or parts of fields. In addition, species-rich swards in Northern Ireland tend to be of wetter grassland types. The meadows at Castletown are an exception to this with a group of four fields composed primarily of a species rich dry grassland type. Castletown hay meadows are on a gently sloping south facing hill. Soils have developed from basalt parent material and are fairly free draining. Minor variations in surface topography and drainage have resulted in local pockets of damp soil. Here plants typical of wetter soil conditions are found which add to the floristic diversity of the site. Past and current management practices have also influenced the species composition of the area. The four fields at Castletown are managed as hay meadows. They contain a range of species typical of dry grasslands that have been managed at low intensity. The grasses crested dog's tail Cynosurus cristatus, smooth meadow grass Poa pratensis, common bent Agrostis capillaris, red fescue Festuca rubra and yellow oat grass Trisetum flavescens are common throughout. A range of herbs including oxeye daisy Leucanthemum vulgare, meadow vetchling Lathyrus pratensis, common knapweed Centaurea nigra, yellow-rattle Rhinanthus minor and meadow buttercup Ranunculus acris are widespread and in places abundant. The spotted-orchids Dactylorhiza maculata and Dactylorhiza fuchsii are abundant in the meadows. Where the soils are less freely draining species such as meadow sweet Filipendula ulmaria, sharp-flowered rush Juncus acutiflorus and creeping bent Agrostis stolonifera are more frequent in the sward. Castletown represents a significant area of semi-natural habitat managed in a traditional way. As such, it provides valuable feeding and roosting sites for a range of animals, including birds and invertebrates. A variety of butterflies have been recorded in the meadows including small copper Lycaena phlaeas and large numbers of meadow brown Maniola jurtina and common blue Polyommatus icarus. https://www.daera-ni.gov.uk/publications/castletown-assi
Species mentioned
Show the 18 species mentioned in the description, with red-list statusPlant communities
MG4 — Coastal floodplain grazing marsh, Lowland meadow and pasture
Alopecurus pratensis-Sanguisorba officinalis grassland
Show 71 indicator speciesCarex 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
Show 81 indicator speciesCarex 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
MG8 — Coastal floodplain grazing marsh, Lowland meadow and pasture
Cynosurus cristatus-Caltha palustris grassland
Show 70 indicator speciesCarex 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