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172 page results for 'British silurian stratigraphy'

Brook lamprey [Lampetra planeri]

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This species is the most abundant and widespread of the British lampreys and is often found in the absence

Early gentian [Gentianella anglica]

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Gentianella amarella , G . x davidiana , prompted a taxonomic reassessment of G. anglica throughout its British

River lamprey [Lampetra fluviatilis]

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All three British lamprey species are supported within the river.

Dartmoor

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imbricatum , which occurs at two localities. 91A0 Old sessile oak woods with Ilex and Blechnum in the British

Wetland Bird Survey

Published date 2026-04-16

Bird monitoring: Wetland Bird Survey (WeBS) Background WeBS is a partnership between the British Trust

Alluvial forests with Alnus glutinosa and Fraxinus excelsior (Alno-Padion, Alnion incanae, Salicion albae)

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grassland, and is continuous with stands of 91A0 Old sessile oak woods with Ilex and Blechnum in the British

Calluna – Vaccinium heaths occur throughout the British uplands, but are best-developed in the North ... Cannock Chase has the main British population of the hybrid bilberry Vaccinium intermedium , a plant

Eryri/ Snowdonia

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Caricion bicoloris-atrofuscae * Priority feature 91A0 Old sessile oak woods with Ilex and Blechnum in the British

Atlantic salt meadows (Glauco-Puccinellietalia maritimae)

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Many species dominant on southern British saltings are completely absent, and much of the expanse comprises

Hard oligo-mesotrophic waters with benthic vegetation of Chara spp.

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Twenty species have been recorded, which represents over 65% of the British flora.