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 68
... Grazing made impossible by abundance of Rubus , etc. Decaying Myrica Continued grazing preventing Myrica regeneration and enhancing abundance of Rubus ( blackberry ) and Pteridium ( bracken ) , etc. Heavy grazing eliminates Persea Open ...
... Grazing made impossible by abundance of Rubus , etc. Decaying Myrica Continued grazing preventing Myrica regeneration and enhancing abundance of Rubus ( blackberry ) and Pteridium ( bracken ) , etc. Heavy grazing eliminates Persea Open ...
Page 191
... grazing . Much of this grazing is due to deer ( there are few sheep on these particular hills ) or game - birds . It probably occurs when they are forced down towards the forest edge by severe winter weather on the summits . Where a ...
... grazing . Much of this grazing is due to deer ( there are few sheep on these particular hills ) or game - birds . It probably occurs when they are forced down towards the forest edge by severe winter weather on the summits . Where a ...
Page 251
... grazed places and do so because grazing restricts the growth of their potential competitors . We now know that if herds of large herbivores are to be conserved in good condition man must step in and take the part of the predator where ...
... grazed places and do so because grazing restricts the growth of their potential competitors . We now know that if herds of large herbivores are to be conserved in good condition man must step in and take the part of the predator where ...
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