Basic BiogeographyBasic considerations. Introduction. Inital approaches to vegetation study. Inital approaches to soil study. Plant dynamics and the nature of vegetation. Ecosystems. Ecological factors and environmental variations. distubed ecosystems. Selected examples from the British Isles. The vegetation. The soils. The impact of man. |
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Page 190
According to Cousens, if the number of Bupalus pupae in the pinewood litter
each winter does not exceed 5 per square metre the subsequent looper
population will not reach epidemic proportions. Steven and Carlisle report the
suggestion of ...
According to Cousens, if the number of Bupalus pupae in the pinewood litter
each winter does not exceed 5 per square metre the subsequent looper
population will not reach epidemic proportions. Steven and Carlisle report the
suggestion of ...
Page 192
A moss layer is present, consisting of Hypnum cupressiforme, Dicranum
scoparium and Hylocomium splendens and, after fire, Erica cinerea (bell heather)
and Vaccinium spp may reach co-dominance locally with the Calluna. This is the
most ...
A moss layer is present, consisting of Hypnum cupressiforme, Dicranum
scoparium and Hylocomium splendens and, after fire, Erica cinerea (bell heather)
and Vaccinium spp may reach co-dominance locally with the Calluna. This is the
most ...
Page 196
Individual heather plants are 7-13 years old and cover values now reach 90 per
cent. Most other plants are greatly suppressed and the groundlevel microclimate
is strongly influenced by the dense, closed Calluna canopy. 3. Mature phase.
Individual heather plants are 7-13 years old and cover values now reach 90 per
cent. Most other plants are greatly suppressed and the groundlevel microclimate
is strongly influenced by the dense, closed Calluna canopy. 3. Mature phase.
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Contents
Introduction | 3 |
Initial approaches to vegetation study | 11 |
Initial approaches to soil study | 28 |
Copyright | |
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