1
Lowland grassland NON-STATUTORY SITE condition assessment (v 06/07/06)
Site Name:
NVC type: Lowland acid grassland, U1e, U3, U4a, U4c, U4/U20-related (species-rich bracken)
Unit/subdivision reference Date. . . . . . . . . . . . . . . . . . . . . . .
Condition: Favourable maintained / Favourable recovered / Unfavourable improving / Unfavourable no change / Unfavourable declining / Partially destroyed / Destroyed
Recommended visiting period: end of April - July but periodically visit between end June-end September to assess Pteridium cover.
Recommended frequency of visits: Site-specific decision
Key management activities affecting condition to discuss with manager:
Grazing intensity/stocking rate FYM input
Grazing period Other inputs
Supplementary feeding Stock type
Scrub and weed control Rolling and chain harrowing
Burning Bracken management
Attribute (*= mandatory attribute. One failure among
mandatory attributes = unfavourable condition)
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Target
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Estimate for attribute
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*Extent of community (recoverable reduction = unfavourable; non-recoverable reduction = partially destroyed).
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No loss without prior consent
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(Describe and refer to map)
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*Sward composition: U3 only -frequency and % cover of Agrostis curtisii.
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At least frequent throughout the sward but no more than 80% cover
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*Sward composition: frequency of positive indicator species/taxa.
Anenome nemorosa ( ),*Calluna vulgaris ( ), Campanula rotundifolia ( ), Cladonia spp. ( ),*Erica spp. ( ), Galium saxatile ( ), Galium verum ( ), Lathyrus linifolius (=L. montanus) ( ), Lotus corniculatus ( ),
Pedicularis sylvatica ( ), Pilosella officinarum (=Hieracium pilosella) ( ), Polygala spp. ( ), Potentilla erecta ( ),
Rumex acetosella ( ), Serratula tinctoria ( ), Stachys officinalis ( ), Succisa pratensis( ),
Teucrium scorodonia ( ), *Vaccinium myrtillus ( ), Veronica officinalis ( ), Viola spp. ( ).
*Note: If cover of ericaceous species (Calluna vulgaris, Erica spp., Vaccinium myrtillus) is greater than 25%, the habitat is heathland and thus its condition would be unfavourable if grassland is the conservation interest feature.
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U1e, U4a,
U3
At least one species/taxa frequent and two species/taxa occasional throughout the sward [See *species note]
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U4c,
U4/U20-related
At least one species/taxa frequent and three species/taxa occasional throughout the sward [See*species note]
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* Sward composition: frequency and % cover of Pteridium aquilinum. NB If Pteridium in U1e, U3 or U4 is more than occasional throughout the sward but less than 20% cover, it is soon likely to become a problem if no management such as cutting or rolling is being carried out.
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U4/U20-related
50-90% cover
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U1e, U3, U4
No more than 30% cover
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*Sward composition: frequency and % cover of negative indicator species/taxa.
Chamerion angustifolium ( ), Cirsium arvense ( ), Cirsium palustre ( ), Cirsium vulgare ( ), Plantago major ( ), Senecio jacobaea ( ), Urtica dioica ( ).
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No species/taxa more than occasional throughout the sward or more than 5% cover
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Attribute (*= mandatory attribute. One failure among
mandatory attributes = unfavourable condition)
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Target
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Estimate for attribute
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*Sward composition: frequency and % cover of all scrub and tree species, considered together, including Rubus fruticosus agg. but excluding Rhododendron species, and in U3 only excluding Ulex species. NB If scrub/tree species are more than occasional throughout the sward but less than 5% cover, they are soon likely to become a problem if grazing levels are not sufficient or if scrub control is not being carried out.
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No more than 5% cover
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*Sward composition, U3 only: % cover of Ulex species
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No more than 30% cover
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*Sward composition: % cover of Rhododendron species
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No more than 1% cover
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*Sward composition: % cover of coarse grasses eg Holcus lanatus, Dactylis glomerata.
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No more than 20% cover
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Sward structure: average height, excluding Pteridium aquilinum.
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U1e, U3, U4a,
1-5 cm
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U4c, U4/U20-related
3-10 cm
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Sward structure: cover of litter in a more or less continuous layer, distributed either in patches or in one larger area.
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U1e, U3, U4
Total extent no more than 25% of the sward
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U4/U20-related
5-50%
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Sward structure: extent of bare ground (not rock) distributed through the sward, visible without disturbing the vegetation.
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No more than 10%
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Sward structure: rabbit grazing and disturbance levels, localized bare ground around rabbit warrens.
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No more than 0.05 ha ie approximately 20x20 metres
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Structured walk recording form
Frequencies: totals out of 20 stops. 1-4 = rare, 5-8 = occasional, 9+ = frequent or more
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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16
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17
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18
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19
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20
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Total
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18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
cm
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