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Pulsatilla vulgaris (L.) Mill. - Plantlife

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13 Annex 2 – changes in population size, 1960-2006<br />

Changes in the numbers of <strong>Pulsatilla</strong> <strong>vulgaris</strong> on 33 sites included in Walker et al. (in press).<br />

Totals are the maximum number of crowns recorded in any one year for each decade and<br />

were derived from a variety of sources.<br />

Site-population<br />

(a) Increasing<br />

1960-69 1970-79 1980-89 1990-99 2000-06<br />

Barnack Hills and Holes 2000 1300 14200 15000 20000<br />

Barnsley Wold 50000 50000 50000 50000 75000<br />

Barton Hills 1100 685 4000 5000 5000<br />

Knocking Hoe 300 50 460 300 1000<br />

Therfield Heath 1000 2897 ? 60000 60000<br />

(b) Stable<br />

Ancaster Valley 1 6 5 16 11 6<br />

Beaumonts Hay

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