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 26
... measure could be turned into a quantitative one by expressing the vitality of the plant in terms of some aspect of its morphology which has been accurately measured . The aspect selected might be leaf length or width , the number of ...
... measure could be turned into a quantitative one by expressing the vitality of the plant in terms of some aspect of its morphology which has been accurately measured . The aspect selected might be leaf length or width , the number of ...
Page 27
Nigel Pears. B. QUANTITATIVE MEASURES 1. DENSITY When the exact number of individuals of a species is determined for a unit area ( the quadrat ) , then we are dealing with density , a truly quantitative measure . Density determinations ...
Nigel Pears. B. QUANTITATIVE MEASURES 1. DENSITY When the exact number of individuals of a species is determined for a unit area ( the quadrat ) , then we are dealing with density , a truly quantitative measure . Density determinations ...
Page 48
... measurement of the hydrological properties of a soil as it exists in the field is extremely difficult . Water enters ... measure . When the soil is saturated water moves downwards under gravitational flow . This may be rapid in a sandy ...
... measurement of the hydrological properties of a soil as it exists in the field is extremely difficult . Water enters ... measure . When the soil is saturated water moves downwards under gravitational flow . This may be rapid in a sandy ...
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