Ervey Wood

Site of Special Scientific Interest · 54.9404, -7.2038

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Londonderry County

Geology & landscape

Landscape processes: Fluvial

Description

Ervey Wood oakwood Dalradian The area is of special scientific interest because of its woodland flora and characteristic associated fauna. It exhibits both a notable structural diversity and a wide variation in woodland character. This variation ranges from calcifugous acid to strongly flushed woodland and has resulted in a diversity of plant communities and a richness of plant species. The site extends for over lkm along the flanks and floor of the Burntollet Glen and contains a variety of physical features. These physical features include a number of small waterfalls and wet rock faces, as well as a series of high cliffs and a broad flood plain along the river, all of which contribute to the overall diversity of the site. The woodland covering the upper, freely-draining and leached slopes of the valley is of moderately calcifugous character, with a canopy dominated by sessile oak Quercus petraea along with frequent and sometimes locally dominant downy birch Betula pubescens and beech Fagus sylvatica, the latter having been widely planted in the past. The understorey is mostly of hazel Corylus avellana, with holly Ilex aguifolium and regenerating canopy species. The predominant ground flora is characterised by bluebell Hyacinthoides non-scripta, with wood sorrel Oxalis acetosella, ferns and bryophytes the main associates. Where stronger leaching occurs resulting in more acidic conditions, bilberry Vaccinium myrtillus and greater wood rush Luzula sylvatica are locally dominant. The lower sides of the valley undergo widespread flushing and mineral enrichment and are covered by a flushed woodland. The canopy here is characterised by the predominance of ash Fraxinus excelsior, alder Alnus glutinosa and willow Salix spp., while the understorey remains dominated by Corylus avellana. The flushed ground flora is mainly composed of a mixture of meadow sweet Filipendula ulmaria, wood anemone Anemone nemorosa, opposite-leaved golden-saxifrage Chrysosplenium oppositifolium, lesser celandine Ranunculus ficaria and creeping buttercup Ranunculus repens. https://www.daera-ni.gov.uk/publications/ervey-wood-assi

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
wood anemone Anemone nemorosa LC herb ranunculaceae
opposite-leaved golden- saxifrage Chrysosplenium oppositifolium LC herb saxifragaceae
meadow sweet Filipendula ulmaria LC herb rosaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
wood sorrel Oxalis acetosella LC herb oxalidaceae
creeping buttercup Ranunculus repens LC herb ranunculaceae
great wood rush Luzula sylvatica LC rush juncaceae
billberry Vaccinium myrtillus LC shrub ericaceae
alder Alnus glutinosa LC tree salicaceae
downy birch Betula pubescens LC tree betulaceae
hazel Corylus avellana LC tree corylaceae
beech Fagus sylvatica LC tree fabiaceae
ash Fraxinus excelsior LC tree oleaceae
sessile or durmast oak Quercus petraea LC tree fagaceae

Plant communities

A9 — Fast flowing river and stream, Marginal and inundation, Pond ditch and canal, Sluggish river and stream

Potamogeton natans community

Schoenoplectus lacustris, Juncus bulbosus, Sparganium angustifolium, Sparganium erectum, Sparganium minimum, Alisma plantago-aquatica, Lobelia dortmanna, Equisetum fluviatile, Myriophyllum alterniflorum, Elodea canadensis, Lemna minor, Lemna trisulca, Nymphaea alba, Callitriche platycarpa, Callitriche stagnalis, Littorella uniflora, Potamogeton natans, Ranunculus trichophyllus, Glyceria fluitans, Chara subspinosa

A14 — Fast flowing river and stream

Myriophyllum alterniflorum community

Isolepis fluitans, Juncus bulbosus, Fontinalis antipyretica, Lobelia dortmanna, Equisetum fluviatile, Myriophyllum alterniflorum, Lemna minor, Callitriche stagnalis, Littorella uniflora, Potamogeton filiformis, Potamogeton gramineus, Potamogeton natans, Ranunculus peltatus, Chara spp., Nitella hyalina

A17 — Chalk river and stream, Fast flowing river and stream

Ranunculus penicillatus ssp. pseudofluitans community

Berula erecta, Nasturtium officinale, Elodea canadensis, Lemna minor, Callitriche stagnalis, Veronica beccabunga, Polygonum amphibium, Polygonum hydropiper, Potamogeton crispus, Potamogeton pectinatus, Ranunculus penicillatus ssp. pseudofluitans

A18 — Fast flowing river and stream

Ranunculus fluitans community

Fontinalis antipyretica, Fontinalis squamosa var. curnowii, Myriophyllum alterniflorum, Myriophyllum spicatum, Elodea canadensis, Mentha aquatica, Lemna gibba, Lemna minor, Potamogeton perfoliatus, Ranunculus fluitans, Glyceria fluitans, Phalaris arundinacea