Basic BiogeographyBasic considerations. Introduction. Inital approaches to vegetation study. Inital approaches to soil study. Plant dynamics and the nature of vegetation. Ecosystems. Ecological factors and environmental variations. distubed ecosystems. Selected examples from the British Isles. The vegetation. The soils. The impact of man. |
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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 202
... recent colonization of abandoned grazings . How big a component in the present British flora are exotic tree species ... recently , the Forestry Commission has become the major agent in the spread of these exotics . In terms of the ...
... recent colonization of abandoned grazings . How big a component in the present British flora are exotic tree species ... recently , the Forestry Commission has become the major agent in the spread of these exotics . In terms of the ...
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 birch Britain British Isles brown earths Cairngorm Cairngorm Mountains Calluna changes chemical clay climatic climax community climax vegetation complex 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 Highlands 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 spread stage structure surface Table temperature timber-line tree-line upland usually variations vegetation whilst wood woodland zone