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Reduced grazing and the decline of Pulsatilla vulgaris Mill. (Ranunculaceae) in England, UK

Kevin J. Walker, Auteur ; Clare E. Pinches, Auteur

Dans Biological Conservation (144(12) DEC 2011)

In England Pulsatilla vulgaris is a threatened herb that declined from 130 to 33 sites between 1750 and the 1960s due to ploughing-up of calcareous grassland. We examined the subsequent fate of these populations using documentary evidence and fi[...]

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