Basic Biogeography |
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Page 5
Nigel Pears. the plant cover , such as wood products , fibres and drugs . It is therefore essential to know how the various types of plant cover originate , what relationships exist within the vegetation , what changes are taking place ...
Nigel Pears. the plant cover , such as wood products , fibres and drugs . It is therefore essential to know how the various types of plant cover originate , what relationships exist within the vegetation , what changes are taking place ...
Page 23
... Cover values are expressed as percentages of the total area of the sampling unit . Because plants frequently overlap , the total percentage cover for all species in a quadrat will often exceed 100 per cent . Although rather slow and ...
... Cover values are expressed as percentages of the total area of the sampling unit . Because plants frequently overlap , the total percentage cover for all species in a quadrat will often exceed 100 per cent . Although rather slow and ...
Page 196
... cover is about 10 per cent or slightly more . Mosses and other vascular plants are well represented and the biomass of Calluna is low . At this stage , heather has minimal influence on the other species present . 2. Building phase ...
... cover is about 10 per cent or slightly more . Mosses and other vascular plants are well represented and the biomass of Calluna is low . At this stage , heather has minimal influence on the other species present . 2. Building phase ...
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