Basic BiogeographyFirst published in 1985. This is the is the second edition of a study looking at ecology and biogeography with updated chapters including current research. It starts with the with the study of plants to gain an understanding of the complexities of ecological relationships. |
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Page 40
... structure . The colloids of clay and organic matter bind together the other soil constituents to form aggregates . If the organic matter content is less than 3 per cent in fine textured soils ( e.g. silts ) then aggregate formation ...
... structure . The colloids of clay and organic matter bind together the other soil constituents to form aggregates . If the organic matter content is less than 3 per cent in fine textured soils ( e.g. silts ) then aggregate formation ...
Page 41
... structure and White describes three main types that are found in soils : the kaolinite clays , where the basic structure is a 1 : 1 lattice of layers ( or lamellae ) comprising a silica sheet ( SiO2 ) n bonded to a gibbsite sheet ( Al2 ...
... structure and White describes three main types that are found in soils : the kaolinite clays , where the basic structure is a 1 : 1 lattice of layers ( or lamellae ) comprising a silica sheet ( SiO2 ) n bonded to a gibbsite sheet ( Al2 ...
Page 109
... structure . A diminishing population will show , in the extreme case , an inverse - pyramid structure , with few young individuals devel- oping and most of the population in the post - reproductive age group . The reproductive potential ...
... structure . A diminishing population will show , in the extreme case , an inverse - pyramid structure , with few young individuals devel- oping and most of the population in the post - reproductive age group . The reproductive potential ...
Contents
Introduction | 3 |
Initial approaches to vegetation study | 12 |
Initial approaches to soil study | 34 |
Copyright | |
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Common terms and phrases
acid agricultural animals approach areas biogeography birch Britain British Isles brown earths bryophyte Cairngorm Calluna cations cent changes chemical clay climatic climax vegetation complex conifers conservation coypus crop cycle deciduous deer disturbance dominant Ecol ecology ecosystem energy environment environmental erosion example factors fire Flandrian forest Forestry Forestry Commission gley soils grass grazing ground flora growth habitat heather herbivores horizon humus important increase influence input insect land landscape layer leached lichen litter mainly methods mineral moorland moors mountain natural nutrients oakwood occur organic parent material pattern peat pest pine pinewood Pinus plant communities podzol pollen population present PRINT#3 production quadrats Quercus Quercus petraea recent region sample Scotland Scots pine Scottish Highlands seed seedlings shrubs slopes species structure surface Table temperature tree-line trees trophic level tropical upland values vegetation wood woodland Zealand zone