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 30
... layer ; composed of recently deposited organic material . F - fermented layer ; same material as L but having undergone some decomposition . H - humified layer ; a further stage of F. The original structure of leaves is no longer ...
... layer ; composed of recently deposited organic material . F - fermented layer ; same material as L but having undergone some decomposition . H - humified layer ; a further stage of F. The original structure of leaves is no longer ...
Page 31
... layer H Humified layer A1 Transitional layer ( organo - mineral ) A2 Leached layer B1 Iron pan B2 Further deposition layer ( clays , organic matter , Percolating water iron and aluminium oxides ) B3 Indurated deposition layer C Parent ...
... layer H Humified layer A1 Transitional layer ( organo - mineral ) A2 Leached layer B1 Iron pan B2 Further deposition layer ( clays , organic matter , Percolating water iron and aluminium oxides ) B3 Indurated deposition layer C Parent ...
Page 174
... layers of organic debris have accumulated . These epiphytes include ferns , mosses , rushes , herbs and even a few small ... layer species reach their best development in pockets between boulders where deeper soil has accumulated . Fig ...
... layers of organic debris have accumulated . These epiphytes include ferns , mosses , rushes , herbs and even a few small ... layer species reach their best development in pockets between boulders where deeper soil has accumulated . Fig ...
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