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Machairs

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Coastal sand dunes and continental dunes Description and ecological characteristics Machair is a distinctive sand dune formation formed by a particular combination of physical factors, including clima...

Estuaries

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Marine, coastal and halophytic habitats Description and ecological characteristics Estuaries are habitat complexes which comprise an interdependent mosaic of subtidal and intertidal habitats, which ar...

Inland salt meadows

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Marine, coastal and halophytic habitats Description and ecological characteristics Inland salt meadows refer to non-coastal sites supporting saltmarsh vegetation. In the UK this vegetation corresponds...

Grey seal [Halichoerus grypus]

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Vertebrate species: mammals Description and ecological characteristics Grey seals Halichoerus grypus spend most of the year at sea, and may range widely in search of prey. They come ashore in autumn t...

Round-mouthed whorl snail [Vertigo genesii]

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Invertebrate species: molluscs Description and ecological characteristics The round-mouthed whorl snail Vertigo genesii is a tiny boreal and alpine species. In the UK, it is found in calcareous flushe...

Petalwort [Petalophyllum ralfsii]

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Lower plant species Description and ecological characteristics Petalwort Petalophyllum ralfsii is a pale green thalloid liverwort with erect lamellae on its upper surface, that grows in open, damp, ca...

Atlantic decalcified fixed dunes (Calluno-Ulicetea)

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Coastal sand dunes and continental dunes Description and ecological characteristics This habitat type occurs on mature, stable dunes where the initial calcium carbonate content of the dune sand is low...

Oligotrophic waters containing very few minerals of sandy plains (Littorelletalia uniflorae)

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Freshwater habitats Description and ecological characteristics This type of waterbody is restricted to sandy plains that are acidic and low in nutrients, and are therefore very scarce. The water is ty...

Dunes with Hippophae rhamnoides

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Coastal sand dunes and continental dunes Description and ecological characteristics Dunes with Hippophae rhamnoides comprise scrub vegetation on more-or-less stable sand dunes in which sea-buckthorn H...

Violet click beetle [Limoniscus violaceus]

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Invertebrate species: arthropods Description and ecological characteristics The violet click beetle Limoniscus violaceus is primarily associated with ancient trees, as it develops in undisturbed wood-...