Basic Biogeography |
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Page 104
... Recent research We may now turn to review more recent work which helps to identify this factor - complex . Ecologists have not dismissed completely the earlier theories but rather have sought to fully understand the exact physiological ...
... Recent research We may now turn to review more recent work which helps to identify this factor - complex . Ecologists have not dismissed completely the earlier theories but rather have sought to fully understand the exact physiological ...
Page 232
... recent deposit more than 30 cm thick 2. Hydric raw soils ( Raw gley soils ) Gleyed mineral soils , normally in very recent marine or estuarine alluvium , with no distinct topsoil , and / or ripened no deeper than 20 cm 3. Lithomorphic ...
... recent deposit more than 30 cm thick 2. Hydric raw soils ( Raw gley soils ) Gleyed mineral soils , normally in very recent marine or estuarine alluvium , with no distinct topsoil , and / or ripened no deeper than 20 cm 3. Lithomorphic ...
Page 234
... recent alluvium ripened to more than 20 cm , and / or with G or relatively pervious Cg horizon affected by free groundwater 9. Man - made soils With thick man - made A horizon or disturbed soil ( including material recognizably derived ...
... recent alluvium ripened to more than 20 cm , and / or with G or relatively pervious Cg horizon affected by free groundwater 9. Man - made soils With thick man - made A horizon or disturbed soil ( including material recognizably derived ...
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