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 20
... cent of that at canopy level), the amount of moisture and wind reaching lower strata, the input of organic material as leaf-fall to the topsoil and the uptake of soil nutrients and soil moisture. The beech thus exerts a strong influence ...
... cent of that at canopy level), the amount of moisture and wind reaching lower strata, the input of organic material as leaf-fall to the topsoil and the uptake of soil nutrients and soil moisture. The beech thus exerts a strong influence ...
Page 23
... cent in chamaephytes when moving from zones below 300 m to those above 1,000 m. More recently an approach to vegetation that has some similarities to that of Raunkiaer has been proposed by Grime. He suggests that the composition and ...
... cent in chamaephytes when moving from zones below 300 m to those above 1,000 m. More recently an approach to vegetation that has some similarities to that of Raunkiaer has been proposed by Grime. He suggests that the composition and ...
Page 27
... cent and 20 per cent respectively. It does not matter how many individuals of a species occur in each quadrat since a single occurrence carries the same weight in frequency calculations as a whole cluster of individuals. Frequency is ...
... cent and 20 per cent respectively. It does not matter how many individuals of a species occur in each quadrat since a single occurrence carries the same weight in frequency calculations as a whole cluster of individuals. Frequency is ...
Page 35
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Page 39
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acid activities agricultural animals approach areas associated become Britain British brown cause cent changes chemical Class clay climatic complex conservation cover crop cycle detailed determined disturbance dominant early Ecol ecology ecosystem effects energy environment environmental established example exist factors field fire forest further grass grazing ground growing growth horizon humus important increase influence insect land layer lead less limit loss major material measure methods mountain natural North nutrients oakwood occur organic particularly pattern peat period pest pine plant population present problem processes production range reached recent reference region relatively seed shown similar slopes soil species spread stage stands structure succession surface Table temperature trees types unit upland usually values vegetation wind wood woodland zone