1. |
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Scrub invasion of calcareous grassland
habitat due to succession, resulting in direct loss of
habitat and floral species diversity. |
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2. |
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Scrub invasion of juniper community due to growth of native scrub species, resulting in direct loss of juniper habitat as plants are smothered. |
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3. |
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Scrub invasion of stone-curlew breeding sites leading to direct loss of open breeding conditions favoured by the stone-curlew. There is also a direct loss of feeding habitat and the scrub harbours mammalian and avian predators, which take both chicks and eggs. |
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4. |
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Scrub invasion within chalk grassland rich in Devil's-bit scabious, its principal food plant, which threatens the breeding habitat of the marsh fritillary butterfly. |
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5. |
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Afforestation of parts of Salisbury Plain, which leads to the direct loss of habitat. There is also the potential future loss of habitat quality by providing a seed source for invasion into grassland and further loss due to increased disturbance by military vehicles as plantations mature and become a training feature. |
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6. |
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Lack of grazing on the chalk grassland, which leads to the predominance of undesirable grassland species. |
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7. |
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Inappropriate grazing levels on the chalk grassland, which mainly occur due to high numbers of stock being located in temporary pennings for short periods. This regime particularly affects the breeding habitat of the marsh fritillary as the sward becomes too short. |
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8. |
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Disturbance from tracked vehicles during training exercises, which leads to a direct loss of calcareous grassland in favourable condition. |
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9. |
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Lack of awareness and appreciation of the nature conservation importance of the habitats and species of European importance. |
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