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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... mineral nutrients or reduced light intensity. Such factors may be regarded as causing stress. Secondly, there are factors which destroy or remove biomass. Examples are grazing, burning or mowing and they may be of natural origin or man ...
... mineral nutrients or reduced light intensity. Such factors may be regarded as causing stress. Secondly, there are factors which destroy or remove biomass. Examples are grazing, burning or mowing and they may be of natural origin or man ...
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... mineral origin), transfers, transformations (movements and changes of form of these 'elements' within the soil body). Such processes proceed simultaneously in all soils. The balance within the combination of changes possible under these ...
... mineral origin), transfers, transformations (movements and changes of form of these 'elements' within the soil body). Such processes proceed simultaneously in all soils. The balance within the combination of changes possible under these ...
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... mineral ) Illuvial horizons A2 Leached layer Percolating water B1 Iron pan B2 Further deposition layer ( clays , organic matter , iron and aluminium oxides ) B3 Indurated deposition layer C Parent material Rising ground water A1 ...
... mineral ) Illuvial horizons A2 Leached layer Percolating water B1 Iron pan B2 Further deposition layer ( clays , organic matter , iron and aluminium oxides ) B3 Indurated deposition layer C Parent material Rising ground water A1 ...
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... mineral fraction. A2 – leached layer; percolating water has removed some mineral and organic particles to lower levels. The zone is often grey in colour due to loss of clay, iron or aluminium and the concentration here of quartz and ...
... mineral fraction. A2 – leached layer; percolating water has removed some mineral and organic particles to lower levels. The zone is often grey in colour due to loss of clay, iron or aluminium and the concentration here of quartz and ...
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N.V. Pears. H - Well - decomposed humus layer , low in mineral matter . A - Mixed mineral - organic layer . Ap - Plough layer of cultivated soils . Ag - A horizon with rusty mottling , subject to periodic waterlogging . Subsurface ...
N.V. Pears. H - Well - decomposed humus layer , low in mineral matter . A - Mixed mineral - organic layer . Ap - Plough layer of cultivated soils . Ag - A horizon with rusty mottling , subject to periodic waterlogging . Subsurface ...
Contents
Plant dynamics and the nature of vegetation | |
Ecosystems | |
Ecological factors and environmental variations | |
Disturbed ecosystems | |
The Vegetation | |
The soils | |
The impact of | |
General Index | |
Species Index | |
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Common terms and phrases
acid agricultural animals approach areas biogeography birch Britain British Isles brown earths bryophyte Cairngorm Cairngorm Mountains Calluna cent changes chemical classification clay climatic climax vegetation complex conifers conservation coypus crop cycle disturbance dominant Ecol ecologists ecology ecosystem energy environment environmental erosion example factors fire forest Forestry Forestry Commission gley soils grass grassland grazing ground flora growth habitat heather herbivores horizon humus important increasing influence input insect land landscape layer leached lichen litter London measure methods mineral moorland moors mountain natural nutrients oakwood occur organic parent material pattern peat pest pine pinewood plant communities podzol pollen population present PRINT#3 production quadrats Quercus petraea recent regeneration 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 zone