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 118
... spread during some future burn . All the trees in an even - aged stand reach maturity at about the same time , thereafter entering a declining stage together . Such communities will tend to show reduced ecological diversity when ...
... spread during some future burn . All the trees in an even - aged stand reach maturity at about the same time , thereafter entering a declining stage together . Such communities will tend to show reduced ecological diversity when ...
Page 135
... spread up the main river valleys and became well established . In the 1936–9 period a vast outbreak of malaria occurred with hundreds of thousands ill and an estimated 20,000 dying . A vigorous eradication programme , costing 2 million ...
... spread up the main river valleys and became well established . In the 1936–9 period a vast outbreak of malaria occurred with hundreds of thousands ill and an estimated 20,000 dying . A vigorous eradication programme , costing 2 million ...
Page 138
... spread from the East , a massive population explosion occurred , eventually spreading to the Atlantic coast . It reached Europe towards the end of the nineteenth century but outbreaks in Germany and France were controlled . Then in the ...
... spread from the East , a massive population explosion occurred , eventually spreading to the Atlantic coast . It reached Europe towards the end of the nineteenth century but outbreaks in Germany and France were controlled . Then in the ...
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