Welcome to the LTOA website. The London Tree Officers Association (LTOA) constitutes the professional & technical voice for London's trees & woodlands. Its aim is to enhance the management of the Capital's trees.
We hope that you find the LTOA website both interesting & informative. If you have any questions, comments or suggestions, please do not hesitate to contact us.
Thursday 6 October 2011 in Islington
The 2011 London Tree and Woodland Awards has been launched and is open to applications.
This year the categories are:
The deadline for receiving nominations is Friday 14 October 2011 and the Awards will be presented at an invited evening reception on 1 December in the London Living Room at the top of City Hall.
Details on the awards, categories and how/where to apply are available on the Forestry Commission London web site at http://www.forestry.gov.uk/releafawards
Oak Processionary Moth can cause serious defoliation of oak trees, their principal host. On the Continent they have also been associated with hornbeam, hazel, beech, sweet chestnut and birch, but usually only where there is heavy infestation of nearby oak trees.
As with many moth species, population levels tend to vary from year to year, but they also show longer term cycles in which the population builds up to high densities over a period of 3-4 years and then declines again to lower density. Although a native of central and southern Europe, the moth spread northwards during the latter half of the twentieth century. It was first recorded in The Netherlands in 1991, and subsequent reports of damaged trees indicate that numbers soared, with 1995 - 1996 and 2004 - 2005 being particularly bad years for tree damage. Populations declined between those years, but are again reaching very damaging levels in The Netherlands and neighbouring areas of Belgium and in parts of Germany.