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 26
... variations over a small area in terms of density , coverage , fidelity , etc. should best reveal subtle environmental changes . We have only dealt with a few examples here : many more can be traced in the literature , some contributed ...
... variations over a small area in terms of density , coverage , fidelity , etc. should best reveal subtle environmental changes . We have only dealt with a few examples here : many more can be traced in the literature , some contributed ...
Page 63
... Variations occur between stands in terms of the presence or absence of six ground flora species ( all denoted as X ) and six shrub species ( all denoted as Y ) . The first stands to be examined , A and B , were quite unlike each other ...
... Variations occur between stands in terms of the presence or absence of six ground flora species ( all denoted as X ) and six shrub species ( all denoted as Y ) . The first stands to be examined , A and B , were quite unlike each other ...
Page 201
... variations in this woodland cover . These variations might not have always involved the dominant species of trees but might have been more in terms of changes in associated trees , shrubs or ground flora species . We have strong ...
... variations in this woodland cover . These variations might not have always involved the dominant species of trees but might have been more in terms of changes in associated trees , shrubs or ground flora species . We have strong ...
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