Basic Biogeography |
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Page 86
... agricultural crop ecosystem , will concentrate his attention on one species , or at most a few , to the exclusion of the other species present . With modern agricultural methods , there is a ruthless elimination of all plant and animal ...
... agricultural crop ecosystem , will concentrate his attention on one species , or at most a few , to the exclusion of the other species present . With modern agricultural methods , there is a ruthless elimination of all plant and animal ...
Page 144
... agricultural practices . In the early days of agriculture , some 10,000 years ago , Huffaker's triumvirate in insect containment operated ( see page 143 ) . The first cultivated crop strains were similar to types existing in the wild ...
... agricultural practices . In the early days of agriculture , some 10,000 years ago , Huffaker's triumvirate in insect containment operated ( see page 143 ) . The first cultivated crop strains were similar to types existing in the wild ...
Page 242
... agricultural region because of its strong association with the Quorn Fox Hunt . Harborough or Melton Mowbray for a day's sport in these woodlands . Today , despite antagonism from some sections of society , fox - hunting has not ...
... agricultural region because of its strong association with the Quorn Fox Hunt . Harborough or Melton Mowbray for a day's sport in these woodlands . Today , despite antagonism from some sections of society , fox - hunting has not ...
Contents
Introduction | 3 |
Initial approaches to vegetation study | 11 |
Initial approaches to soil study | 28 |
Copyright | |
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Common terms and phrases
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