Basic Biogeography |
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Page 54
... lead to replacement of the colonizing species ( Group I ) by persistent species ( Group II ) . In an early stage several grass species establish beneath the juniper scrub and are then followed by several shrubs ( spp of Prunus , Rhus ...
... lead to replacement of the colonizing species ( Group I ) by persistent species ( Group II ) . In an early stage several grass species establish beneath the juniper scrub and are then followed by several shrubs ( spp of Prunus , Rhus ...
Page 216
... leads to greater chemical and biological activity within soils of the south . He cites the differences to be found in ... lead to considerable variations within any given area . Nevertheless , it is possible to map these climatic regions ...
... leads to greater chemical and biological activity within soils of the south . He cites the differences to be found in ... lead to considerable variations within any given area . Nevertheless , it is possible to map these climatic regions ...
Page 224
... lead to pan development . They may also form when raw humus evolves and begins to accumulate . This restricts the rooting of surface vegetation and eventually leads to increased water retention in the surface layers . Both these ...
... lead to pan development . They may also form when raw humus evolves and begins to accumulate . This restricts the rooting of surface vegetation and eventually leads to increased water retention in the surface layers . Both these ...
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