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Published byDoreen Rogers Modified over 8 years ago
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What is it? Traditionally Hedgerows were created for: Containing livestock in fields Mark boundaries between parishes Protect the immediately surrounding area of field from erosion. Preventing water run off and soil structure However, indirectly, hedgerows contain a high diversity of living organisms. They provide a habitat for wildlife, in particular they are a breeding site for birds.
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Hedgerow removal starting occurring on a large scale in WW2 for high intensity farming so that large amounts of food could be produced for self-sufficiency What are its Effects? 1)Loss of habitat for living organisms=Loss of diversity 2)Variation decreases as isolating barriers to different ecosystems are removed=exchange of alleles 3)Weakening of soil structure and soil erosion 4)Increased run-off of solutions 5)Increased predation on crops by insects that would normally be preyed upon by predators in hedges
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How might some of the effects be overcome? Replant the Hedgerows, grants are available for this Develop new wildlife areas for habitats to encourage greater biodiversity Such as increasing woodland, numbers of gardens Prevent removal of as many hedgerows as possible in the future-you now have to apply legally to do this Use insecticides to overcome predation Make an alternative barrier e.g a wall to isolate populations and increase variation of alleles
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