Bishop's Wood

Site of Special Scientific Interest · 51.5736, -4.0325

Habitats

Bracken scrub

Geology & landscape

Rock Type: Limestone

Description

Description Bishop’s Wood is of special interest for its semi-natural broadleaved woodland. The site is situated approximately 10 km to the west of Swansea covering both sides of a steep sided limestone valley , running in a south-easterly direction into Caswell Bay. The underlying limestone is overlain by shallow loamy, brown rankers soil and the altitude ranges from 10-70m. Most of the woodland is co-dominated by tall mature maiden ash Fraxinus excelsior and oak Quercus spp, with a dense shrub layer of hazel Corylus avellana, hawthorn Crataegus monogyna, field maple Acer campestre, holly Ilex aquifolium with regeneration of ash and some sycamore Acer pseudoplatanus. Also present but at a lower cover are spindle Euonymus europaeus, blackthorn Prunus spinosa, elder Sambucus nigra, young beech Fagus sylvatica and a localised presence of lime Tilia xeuropaea. There is a dense, species rich field layer comprising species such as wood anemone Anemone nemorosa, ivy Hedera helix hart’s-tongue fern Asplenium scolopendrium, bluebell Hyacinthoides non-scripta and broad-buckler fern Dryopteris dilatata. The field layer also contains many other species including dog’s mercury Mercurialis perennis, herb Robert Geranium robertianum and ramsons Allium ursinum. The ground layer is generally sparse comprising mainly the mosses Thamnobryum alopecurum, Brachythecium rutabulum and Eurhynchium praelongum, with the former in particular being indicative of calcareous soils. The field layer also contains a number of other species, including dog’s mercury Mercurialis perennis, herb Robert Geranium robertianum and ransoms Allium ursinum. The soil layer is generally thin, mainly including the mosses Thamnobryum alopecurum, Brachythecium rutabulum and Eurhynchium praelongum, the former in particular is an indicator of calcareous soil. The upper slopes of the eastern side of the valley are dominated by a mature, relatively dense canopy of oak. The shrub layer comprises mainly holly and hazel with scattered hawthorn, sycamore and beech. Here the field layer consists predominantly of bramble Rubus fruticosus and bracken Pteridium aquilinum with locally frequent cow-wheat Melampyrum pratense and honeysuckle Lonicera periclymenum. Remarks: Together with four other sites in the area Bishop’s Wood is part of Gower Ash Woods cSAC which supports woodland vegetation assignable to the habitat type ‘Tilio-Acerion forest of slope, screes and ravines’ listed on Annex 1 of the EC Habitats Directive (Directive 92/43 EEC on the Conservation of Natural Habitats and Wild Flora and Fauna).

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
Phalacrocorax aristotelis Not listed in GB list bird phalacrocoracidae
hart's-tongue fern Asplenium scolopendrium LC fern aspleniaceae
broad buckler fern Dryopteris dilatata LC fern dryopteridaceae
bracken Pteridium aquilinum LC fern dennstaedtiaceae
ramson Allium ursinum LC herb liliaceae
wood anemone Anemone nemorosa LC herb ranunculaceae
herb Robert Geranium robertianum LC herb geraniaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
honeysuckle Lonicera periclymenum LC herb caprifoliaceae
common cowwheat Melampyrum pratense VU herb orobanchaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
bramble Rubus fruticosus LC herb rosaceae
rough stalked feather moss Brachythecium rutabulum LC moss hypnales
fox tail feather moss Thamnobryum alopecurum LC moss hypnales
hawthorn Crataegus monogyna LC shrub rosaceae
spindle tree Euonymus europaeus LC shrub celastraceae
blackthorn Prunus spinosa LC shrub rosaceae
elder Sambucus nigra 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
holly Ilex aquifolium LC tree aquifoliaceae
ivy Hedera helix LC woody climber araliaceae

Plant communities

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