Basic Biogeography |
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Page 12
... sampling size 0 1/8 1/4 1/2 1 2 4 8 16 32 64 128 256 Quadrat size ( m2 ) Fig . 2.1 A species - area curve for determining the minimum size ( minimal area ) of a representative sample from the plant community . The minimal area ...
... sampling size 0 1/8 1/4 1/2 1 2 4 8 16 32 64 128 256 Quadrat size ( m2 ) Fig . 2.1 A species - area curve for determining the minimum size ( minimal area ) of a representative sample from the plant community . The minimal area ...
Page 34
... sample are set out below , providing some insight into how the pedologist adds more precise detail to his carefully ... sample and proceeds by the following stages : ( a ) First remove all coarse stones from sample which is then oven ...
... sample are set out below , providing some insight into how the pedologist adds more precise detail to his carefully ... sample and proceeds by the following stages : ( a ) First remove all coarse stones from sample which is then oven ...
Page 161
... sample , slides are prepared for microscopic examination . A magnifica- tion of x400 is usually adequate , though oil - immersion techniques may be necessary for the identification of problematical grains . In recording the count of ...
... sample , slides are prepared for microscopic examination . A magnifica- tion of x400 is usually adequate , though oil - immersion techniques may be necessary for the identification of problematical grains . In recording the count of ...
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