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 101
... mountain masses than on smaller or isolated mountain systems in the same latitude . Here the tree - line runs much higher on the siliceous core than on the less massive calcareous flanking mountain systems to the south and north ( e.g. ...
... mountain masses than on smaller or isolated mountain systems in the same latitude . Here the tree - line runs much higher on the siliceous core than on the less massive calcareous flanking mountain systems to the south and north ( e.g. ...
Page 163
... mountain configurations in Europe acted to trap many species as the ice advanced from the north and down from the mountain chains . In contrast , in North America the north - south run of the main mountain systems allowed relatively ...
... mountain configurations in Europe acted to trap many species as the ice advanced from the north and down from the mountain chains . In contrast , in North America the north - south run of the main mountain systems allowed relatively ...
Page 166
... ( mountain avens ) . The period began about 13000 B.P. Alleröd Period . This period , named after a Danish site , was a climatic improvement running from about 10000 B.C. to 8000 B.C. More plants were able to colonize ; tree birch - scrub ...
... ( mountain avens ) . The period began about 13000 B.P. Alleröd Period . This period , named after a Danish site , was a climatic improvement running from about 10000 B.C. to 8000 B.C. More plants were able to colonize ; tree birch - scrub ...
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