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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... moss cushions on Arctic rock surfaces ) , but most have a variety of species present which exhibit several life - form categories . Two simple examples illustrate this . In many English oakwoods there is a main tree layer.
... moss cushions on Arctic rock surfaces ) , but most have a variety of species present which exhibit several life - form categories . Two simple examples illustrate this . In many English oakwoods there is a main tree layer.
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... layer may be present in which hazel, hornbeam, holly or other woody shrubs or small trees feature. Under this shrub stratum, a patchy ground flora of grasses, herbs and mosses frequently occurs, some of the herbs reaching several feet ...
... layer may be present in which hazel, hornbeam, holly or other woody shrubs or small trees feature. Under this shrub stratum, a patchy ground flora of grasses, herbs and mosses frequently occurs, some of the herbs reaching several feet ...
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... layer or humus . 4. Geophytes ( G ) - buds lie entirely in the soil , protected from cold or dry air . 5. Therophytes ( Th ) annuals which produce seeds . The parent plant dies completely and seeds remain inactive until favourable ...
... layer or humus . 4. Geophytes ( G ) - buds lie entirely in the soil , protected from cold or dry air . 5. Therophytes ( Th ) annuals which produce seeds . The parent plant dies completely and seeds remain inactive until favourable ...
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... layer and not the taller , scattered trees . ) Cover values are often arranged into a limited number of classes as follows : Class X less than 1 % ; Class 1 , 1-5 % ; Class 2 , 6-25 % ; Class 3 , 26-50 % ; Class 4 , 51-75 % ; Class 5 ...
... layer and not the taller , scattered trees . ) Cover values are often arranged into a limited number of classes as follows : Class X less than 1 % ; Class 1 , 1-5 % ; Class 2 , 6-25 % ; Class 3 , 26-50 % ; Class 4 , 51-75 % ; Class 5 ...
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... layers seen in a vertical section extending from the ground surface to the bedrock. This arrangement of horizons is seen when either a trench is dug or samples are systematically brought to the surface with a soil auger. In some soil ...
... layers seen in a vertical section extending from the ground surface to the bedrock. This arrangement of horizons is seen when either a trench is dug or samples are systematically brought to the surface with a soil auger. In some soil ...
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