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 4
... less but more 'important. Resources are not unlimited, and if we continue to destroy, pollute or over exploit our physical environment then we severely threaten our own existence. We are now the dominant species over most of the globe ...
... less but more 'important. Resources are not unlimited, and if we continue to destroy, pollute or over exploit our physical environment then we severely threaten our own existence. We are now the dominant species over most of the globe ...
Page 6
... less obvious part of the plant body. In contrast. Phanerogams display their reproductive mechanisms prominently, as cones or flower heads, and are seed-bearing. Cryptogams, having less complex internal structures, are the so-called ...
... less obvious part of the plant body. In contrast. Phanerogams display their reproductive mechanisms prominently, as cones or flower heads, and are seed-bearing. Cryptogams, having less complex internal structures, are the so-called ...
Page 15
... less complex than the oakwood example is noted. The beech (Fagas syl'oatica) forms a distinctive stratum but it is usually the only tall tree present. Beneath this the shrub or small tree layer is often absent or confined to a few ...
... less complex than the oakwood example is noted. The beech (Fagas syl'oatica) forms a distinctive stratum but it is usually the only tall tree present. Beneath this the shrub or small tree layer is often absent or confined to a few ...
Page 20
... less than 5 per 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 ...
... less than 5 per 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 ...
Page 22
... less than 2 m high (e) climbing phanerophytes (Ps) - no height restriction 2. Chamaephytes (Ch) - herbaceous or woody plants with buds produced close to the soil. Hemicryptophytes (H) - buds are half buried in the top soil layer or ...
... less than 2 m high (e) climbing phanerophytes (Ps) - no height restriction 2. Chamaephytes (Ch) - herbaceous or woody plants with buds produced close to the soil. Hemicryptophytes (H) - buds are half buried in the top soil layer or ...
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Common terms and phrases
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