1
Lowland grassland NON-STATUTORY SITEcondition assessment (v 06/07/06)
Site Name:
NVC type: MG5
Unit/subdivision reference Date. . . . . . . . . . . . . . . . . . . . . . .
Condition: Favourable maintained/Favourable recovered /Unfavourable improving/
Unfavourable no change/Unfavourable declining/Partially destroyed/Destroyed
Recommended visiting period: mid May-end July (pastures), mid May-hay cut time (meadows) with periodic visit in autumn-winter visit to check condition at end of aftermath grazing period in hay meadows.
Recommended frequency of visits: Site-specific decision
Key management activities affecting condition to discuss with manager:
Hay+aftermath grazing Grazing intensity/stocking rate
FYM input Grazing period
Other inputs Supplementary feeding
Drainage Stock type
Raising water levels Rolling and chain harrowing
Scrub and weed control
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: grass/herb (ie non-Graminae) ratio
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30 - 90% herbs
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*Sward composition: frequency of positive indicator species/taxa.
Agrimonia eupatoria ( ), Alchemilla spp. ( ),
Anenome nemorosa ( ), Centaurea nigra ( ),
Euphrasia spp. ( ), Filipendula ulmaria ( ),
Filipendula vulgaris ( ), Galium verum ( ),
Genista tinctoria ( ), Lathyrus linifolius (=L. montanus) ( ),
Lathyrus pratensis ( ), Leontodon hispidus/L. saxatilis ( ),
Leucanthemum vulgare ( ), Lotus corniculatus ( ),
Pimpinella saxifraga ( ), Polygala spp. ( ),
Potentilla erecta ( ), Primula veris ( ), Rhinanthus minor ( ),
Sanguisorba minor ( ), Sanguisorba officinalis ( ),
Serratula tinctoria ( ), Silaum silaus ( ),
Stachys officinalis ( ),Succisa pratensis ( ),
Tragopogon pratensis ( ),
small blue-green Carex spp. (leaves less than 5mm wide) (=C. flacca, C. nigra, C. panicea) ( ).
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At least two species/taxa frequent and two occasional
throughout the sward
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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 of negative indicator species/taxa.
Anthriscus sylvestris ( ), Cirsium arvense ( ),
Cirsium vulgare ( ), Galium aparine ( ), Plantago major ( ), Pteridium aquilinum ( ), Rumex crispus ( ) ,
Rumex obtusifolius ( ), Senecio jacobaea ( ),
Urtica dioica ( ).
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No species/taxa more than occasional throughout the sward or singly or together more than 5% cover
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*Sward composition: indicators of waterlogging. Cover % of Juncus spp, Deschampsia cespitosa, large Carex spp. (leaves more than 5mm wide) eg Carex acutiformis, large grasses (leaves more than 10mm wide, stout stems) ie Glyceria maxima, Phalaris arundinacea, Phragmites australis.
Note: Care is required on ridge-and-furrow fields where the furrows may support a different interest feature (eg wet grassland).
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No species/taxa together or singly covering more than 10% of the sward
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*Sward composition: frequency and % cover of all scrub and tree species, considered together. NB If scrub/tree species in pastures 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 structure: average height. Upper target refers to pastures only.
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5-15 cm
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Sward structure: litter in a more or less continuous layer, distributed either in patches or in one larger area.
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Total extent no more than 25% of the sward
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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 5%
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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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Yüklə 140.5 Kb.