Basic Biogeography |
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Page 111
... period would hardly compensate for longer periods of severe exposure , conditions are obviously very critical at these levels today . The tatter rate of one square inch per day is decidely optimistic when applied to these native ...
... period would hardly compensate for longer periods of severe exposure , conditions are obviously very critical at these levels today . The tatter rate of one square inch per day is decidely optimistic when applied to these native ...
Page 166
... period began about 13000 B.P. Alleröd Period . This period , named after a Danish site , was a climatic improvement running from about 10000 B.C. to 8000 B.C. More plants were able to colonize ; tree birch - scrub along with willow and ...
... period began about 13000 B.P. Alleröd Period . This period , named after a Danish site , was a climatic improvement running from about 10000 B.C. to 8000 B.C. More plants were able to colonize ; tree birch - scrub along with willow and ...
Page 167
... period . Atlantic Period . Whereas the Boreal had been relatively dry , the Atlantic was much wetter , although still warm . Lime reached its maximum range in Britain , indicating average summer temperatures during this Climatic Optimum ...
... period . Atlantic Period . Whereas the Boreal had been relatively dry , the Atlantic was much wetter , although still warm . Lime reached its maximum range in Britain , indicating average summer temperatures during this Climatic Optimum ...
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