Basic Biogeography |
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Page 67
... growing at any site . Walker concluded that the infill in most ponds was material brought in from outside , by erosion and run - off , and not deposited organic matter from the plants themselves . The climax for these sites appeared to ...
... growing at any site . Walker concluded that the infill in most ponds was material brought in from outside , by erosion and run - off , and not deposited organic matter from the plants themselves . The climax for these sites appeared to ...
Page 106
... growing conditions of a valley site ( 700 m ) could withstand the test conditions of 15 ° C and 43 per cent relative humidity without showing signs of drought damage for twice as long as those poorly developed shoots which had grown ...
... growing conditions of a valley site ( 700 m ) could withstand the test conditions of 15 ° C and 43 per cent relative humidity without showing signs of drought damage for twice as long as those poorly developed shoots which had grown ...
Page 215
... growing peat surface is characterized by the hollow - and - hummock complex described on page 194 , Chapter 8. The peat is very acidic with pH values about 4-0 . Under the anaerobic conditions of standing water , however , the pH value ...
... growing peat surface is characterized by the hollow - and - hummock complex described on page 194 , Chapter 8. The peat is very acidic with pH values about 4-0 . Under the anaerobic conditions of standing water , however , the pH value ...
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 biotic birch Britain British Isles brown earths Cairngorm Cairngorm Mountains Calluna changes chemical clay climatic climax community climax vegetation complex conservation 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 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 stage structure surface Table temperature timber-line tree-line upland usually variations vegetation whilst wood woodland zone