Basic Biogeography |
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Page 110
... pinewood typical of the upper slopes of the Eastern Highlands in the past would have functioned as a very efficient wind barrier . This is because a medium - density barrier of this type is more effective than a solid windbreak which ...
... pinewood typical of the upper slopes of the Eastern Highlands in the past would have functioned as a very efficient wind barrier . This is because a medium - density barrier of this type is more effective than a solid windbreak which ...
Page 182
... pinewood has been replaced by birchwood which , in time , has then reverted back to pinewood . Birch may also dominate open sites within or above pinewoods , such as steep scree slopes or around former settlements such as bothies and ...
... pinewood has been replaced by birchwood which , in time , has then reverted back to pinewood . Birch may also dominate open sites within or above pinewoods , such as steep scree slopes or around former settlements such as bothies and ...
Page 190
... pinewood is seldom seriously damaged by insect outbreaks . Many species of insect exist but the populations are usually well balanced . Some damage is done by the larger pine - shoot beetle ( Myelophilus piniperda ) , the pine weevil ...
... pinewood is seldom seriously damaged by insect outbreaks . Many species of insect exist but the populations are usually well balanced . Some damage is done by the larger pine - shoot beetle ( Myelophilus piniperda ) , the pine weevil ...
Contents
Introduction | 3 |
Initial approaches to vegetation study | 11 |
Initial approaches to soil study | 28 |
Copyright | |
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acidic agricultural animals approach areas become biogeography biotic birch Britain British Isles brown earths Cairngorm Cairngorm Mountains Calluna changes chemical clay climatic climax community climax vegetation complex conservation coypus crop cycle deciduous deer dominant Ecol ecologists ecosystem energy environment environmental erosion example fire forest Forestry Forestry Commission gley soils grass grazing ground flora growth heather herbivores horizon humus important increase influence insect land landscape layer leached lichen litter methods mineral moorland moors mountain native natural nutrients oakwoods occur organic parent material pattern peat pedogenic pest pine pinewood Pinus plagioclimax plant communities plant cover podzol pollen population present produce quadrat Quercus recent regeneration region sample Scotland Scots pine Scottish Highlands seedlings shrubs slopes soil types stage structure surface Table temperature timber-line tree-line upland usually variations vegetation whilst wood woodland zone