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 50
... further weathered to form a rudimentary soil . The plants themselves cause further weathering and add organic material to the site . More water is retained and additional supplies of nutrients become available from weathered material ...
... further weathered to form a rudimentary soil . The plants themselves cause further weathering and add organic material to the site . More water is retained and additional supplies of nutrients become available from weathered material ...
Page 112
... further and further into areas of semi - natural and natural vegetation in pursuit of recreational opportunities . Secondly , the intentional fire where there is planned use of fire to modify an ecosystem . Deliberate use like this has ...
... further and further into areas of semi - natural and natural vegetation in pursuit of recreational opportunities . Secondly , the intentional fire where there is planned use of fire to modify an ecosystem . Deliberate use like this has ...
Page 169
... Further , the range of the two frequently overlaps and hybrids may Occur . Well developed Quercus robur woodland casts a moderate shade and permits a patchy under - storey of shrubs such as Corylus avellana ( hazel ) , Crataegus ...
... Further , the range of the two frequently overlaps and hybrids may Occur . Well developed Quercus robur woodland casts a moderate shade and permits a patchy under - storey of shrubs such as Corylus avellana ( hazel ) , Crataegus ...
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