CONCLUSION
The results gathered from the survey of oak
trees in the south of the Wirral peninsula showed several interesting trends in
the tree population. The majority of trees measured were over-mature (on
average 64 percent) and would be overdue for felling if they were being managed
commercially. The trees in transept 4 were found to have a significantly
greater dbh and total height than trees in any other part of the survey area,
possibly because they may have been established first, being at the centre of
the Lever-Hulme Estate.
Throughout the transects, although most trees
appeared healthy from a distance, it was found on closer inspection that
approximately 80 percent were incapable of producing any timber of sawlog
quality, usually because of decay in the trunk. The size distribution of the
oak on the Wirral did not match those of the 1979-82 Tree Census of Merseyside
(Forestry Commission, 1984), suggesting that the oaks found on the Wirral were
more over-mature than those in the rest of the county. The management of the
present population for any kind of sawlog or fuelwood production would be
extremely difficult due to uneven make-up of the population, in addition to the
factors mentioned above.
Future management plans might consider the
possibility of planting new trees on sites such as those suggested by the
Countryside Commission (1974), which would maximise their sawlog and fuelwood
potential as well as their attractiveness to wildlife. Although this project
only considers the oak there is no reason why a mixture of broadleaved species
should not be planted on these sites. Over-mature trees, which are too
expensive to remove, might be left to break-up in situ, as long as they pose no
threat to public safety. Trees on roadsides appear to be managed better than
farmland trees, perhaps due to the greater risk to public safety. The latest
recommended addition to the Common Agricultural Policy is likely to change the
face of the British Countryside dramatically and if it comes into force, have a
greater effect on the future of hedgerow trees than any other factor discussed
in this project.
After considering all these factors it would
seem that oak trees growing within hedgerows are unlikely to remain a major
feature of the British countryside in the future, once the present population
has died-out. This is due, for the most part, to a lack of effective management
and changing farming techniques.
©
1987 Robert I. Bradshaw
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