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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Results 1-3 of 47
Page 22
B. ( 2 ) Frequency This measures the regularity with which a species is distributed
throughout the community . If we sample a ... Although this measure is simple to
obtain we have to be very careful in interpreting it . The frequency values are ...
B. ( 2 ) Frequency This measures the regularity with which a species is distributed
throughout the community . If we sample a ... Although this measure is simple to
obtain we have to be very careful in interpreting it . The frequency values are ...
Page 25
So far we have been describing a few measures we can apply to the species
found in a single quadrat or stand . ... Fidelity is a measure of the degree to which
a plant is found only in a certain type of community and not in others ( i.e. its ...
So far we have been describing a few measures we can apply to the species
found in a single quadrat or stand . ... Fidelity is a measure of the degree to which
a plant is found only in a certain type of community and not in others ( i.e. its ...
Page 255
A major problem in the economic approach is , of course , the measurement of
intangible benefits in the equation . ... How , for example , does one measure the
value of benefits to physical and mental health derived from recreational activities
...
A major problem in the economic approach is , of course , the measurement of
intangible benefits in the equation . ... How , for example , does one measure the
value of benefits to physical and mental health derived from recreational activities
...
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Contents
Introduction | 3 |
Initial approaches to vegetation study | 11 |
Initial approaches to soil study | 28 |
Copyright | |
6 other sections not shown
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Common terms and phrases
acidic activities agricultural animals approach areas associated become birch Britain British brown cause changes chemical Class clay climatic complex cover crop cycle described detailed determine dominant early ecological ecology ecosystem effect energy environment environmental established example exist factors field fire flora forest frequently further gley grass grazing ground growing growth horizon humus important increase influence insect land layer less limit material measure methods mountain native natural North nutrients oakwoods occur organic particularly pattern peat period pest pine plant podzol pollen population present problem produce reach recent reference region relatively result seedlings similar slopes soil species spread stage stands structure succession surface Table tree tree-line types unit upland usually variations various vegetation whilst wood woodland zone
Bibliographic information
| Title | Basic Biogeography A Longman Text |
| Author | Nigel Pears |
| Edition | 3, illustrated, reprint |
| Publisher | Longman, 1977 |
| Original from | the University of Michigan |
| Digitized | 22 Aug 2011 |
| ISBN | 0582484014, 9780582484016 |
| Length | 272 pages |
| Export Citation | BiBTeX EndNote RefMan |