Lowland grassland non-statutory condition assessment (V. 07/06/06) Site Name: nvc type: cg1




Дата канвертавання26.04.2016
Памер19.04 Kb.





Lowland grassland NON-STATUTORY condition assessment (v.07/06/06)

Site Name:


NVC type: CG1
Unit/subdivision reference Date

Condition: Favourable maintained/Favourable recovered /Unfavourable improving/

Unfavourable no change/Unfavourable declining/Partially destroyed/Destroyed

Recommended visiting period: May-June

Recommended frequency of visits: Site-specific decision
Key management activities affecting condition to discuss with manager:

Scrub and weed control Grazing intensity/stocking rate

FYM input Grazing period

Other inputs Supplementary feeding

Stock type



Attribute (*= mandatory attribute. One failure among

mandatory attributes = unfavourable condition)

Target

Estimate for attribute

*Extent of community (recoverable reduction = unfavourable; non-recoverable reduction = partially destroyed).


No loss without prior consent

(Describe and refer to map)

Discretionary attribute Sward composition: % cover of lichens.

Cover greater than 5%




*Sward composition: frequency of positive indicator species/taxa.
Acinos arvensis (=Clinopodium acinos) ( ),

Anthyllis vulneraria ( ), Arenaria serpyllifolia ( ), Carlina vulgaris ( ), Centaurium erythraea ( ), Galium verum ( ),

Helianthemum nummularium ( ), hoary-leaved Helianthemum spp. (H. apenninum or H. canum (=H. oelandicum)) ( ),

Leontodon hispidus/L. saxatilis ( ), Linum catharticum ( ),

Lotus corniculatus ( ), Pilosella officinarum (=Hieracium pilosella) ( ), Sanguisorba minor ( ),

Scabiosa columbaria ( ), Scilla spp. ( ), Sedum spp. ( ), Thymus spp. ( ), Trinia glauca ( ).

At least one species/taxa frequent and three occasional

throughout the sward






*Sward composition: frequency of negative indicator species/taxa.
Cirsium arvense ( ), Cirsium vulgare ( ), coarse grasses eg Holcus lanatus ( ).

No species/taxa more than occasional throughout the sward or singly or together more than 5% cover




*Sward composition: frequency and % cover of all scrub and tree species including woody climbers, considered together. 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.

No more than 5% cover




Sward composition: frequency of negative indicator species.
Senecio jacobaea ( )

No more than occasional throughout the sward







Attribute (*= mandatory attribute. One failure among

mandatory attributes = unfavourable condition)

Target

Estimate for attribute

Sward structure: average height.


5 cm or less



Sward structure: litter in a more or less continuous layer, distributed either in patches or in one larger area.

Total extent no more than 25% of the sward




Sward structure: extent of bare ground (not rock) distributed through the sward, visible without disturbing the vegetation.


5-20%



Sward structure: rabbit grazing and disturbance levels, localised bare ground around rabbit warrens.

No more than 0.05 ha ie approximately 20 x 20 metres






Structured walk recording form

Frequencies: totals out of 20 stops. 1-4 = rare, 5-8 = occasional, 9+ = frequent or more


18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

cm


База данных защищена авторским правом ©shkola.of.by 2016
звярнуцца да адміністрацыі

    Галоўная старонка