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 129
... example we immediately think of the Arctic lemmings . However , recent research , such as the work of Krebs , shows that these fluctuations are probably just as common in tropical and temperate ecosystems . However , it is still true to ...
... example we immediately think of the Arctic lemmings . However , recent research , such as the work of Krebs , shows that these fluctuations are probably just as common in tropical and temperate ecosystems . However , it is still true to ...
Page 131
... example , the clearing of forest for crop production not only means the removal of much natural vegetation but it may also profoundly alter the native animal populations , the local microclimate and the soil types in the area . Further ...
... example , the clearing of forest for crop production not only means the removal of much natural vegetation but it may also profoundly alter the native animal populations , the local microclimate and the soil types in the area . Further ...
Page 256
... example , some farm land may also have a secondary function as recreational or wildlife land . Similar approaches have now been used in this country . McVean and Lockie provide an example from the Western Cairngorms ( Fig . 10.9 ) . A ...
... example , some farm land may also have a secondary function as recreational or wildlife land . Similar approaches have now been used in this country . McVean and Lockie provide an example from the Western Cairngorms ( Fig . 10.9 ) . A ...
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