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This Bulletin records the proceedings of a seminar held at York University in April 1990, organised jointly by the Arboricultural Association and the Forestry Commission. The seminar was the third of its kind, held every 5 years, since 1980, updating the arboriculture industry on current arboriculture research in the United...

Farmers are being encouraged to grow trees on surplus agricultural land as part of government policy effected through the Farm Woodland Scheme. The efficient production of timber is profitable, providing raw material for industry, yet it does not preclude other important objectives such as landscape design, amenity considerations, game management...

On moorland and heathland soils in Great Britain nitrogen deficiency can severely restrict the growth of certain conifer species, including Sitka spruce, the main commercial species. Until the 1970s this was thought to be due solely to competition from heather and was commonly known as ‘heather check’. However, increased planting...

The eleven chapters comprising this Bulletin cover the botany, cultivation, performances and utilisation of poplars and poplar timber. The genus Populus comprises some 32 species classified according to their botanical characters into five sections and one sub-section. Of these, the sections Aigeiros (the black poplars) and Tacamahaca (the balsam poplars)...

The results of the 1989 forest condition monitoring programme are presented. A total of 7436 trees were assessed, with the species being restricted to Sitka spruce (Picea sitchensis), Norway spruce (P. abies), Scots pine (Pinus sylvestris), oak (Quercus spp.) and beech (Fagus sylvatica). Crown condition is now assessed on the...

Barn owl numbers have declined over much of the British Isles. However, in northern Britain afforestation has resulted in some local increases. Young plantations with rank grassy vegetation contain large numbers of field voles which are the main food of barn owls. Abandoned farm buildings provide nest sites for the...

This Bulletin reviews the evidence for a suggested forest effect in the acidification of surface waters in Great Britain. Acid deposition from the atmosphere within susceptible areas of Britain has affected fresh water flora and fauna, causing the decline and in some instances the complete loss of fish populations. Currently...

This Bulletin explains the taxation of woodlands for the benefit of woodland occupiers (and their advisers). Part 1 deals with income tax and corporation tax following the major changes to the taxation of commercial woodlands made by the Finance Act 1988. Part 2 deals with the application of capital gains...

Computer-based systems are now commonplace in most forestry operating environments. One of the inherent features of forestry everywhere is the amount of data collected over long periods of time. Information technology has made the storage and analysis of these data a cost effective reality. Never before has the forest manager...

The goshawk is a large bird of prey which was re-introduced into Britain in the 1960s and 1970s. Populations are now beginning to expand, particularly in areas with large forests, and where human persecution is not a limiting factor. It is predicted that goshawks will become relatively common in some...

The great European spruce bark beetle (Dendroctonus micans) was first identified as a breeding species in Britain in 1982. This insect’s distribution, pest status, biology, life cycle and control methods are described. Although its present population is limited to Wales, the English West Midlands and Lancashire, it is well established....

The storm which struck south-east England on the night of 15/16 October 1987 was the worst in the region since 1703: it caused more damage to woodlands and trees than any other recorded gale in Britain. Some 4 million cubic metres of timber were blown, equivalent to about 5 years’...