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.
The LTOA has become a UK partner in the new Euphresco project Identification of Cryphonectria and Ceratocystis spp. occurring on sweet chestnut and Platanus spp.
We have also set up a new CSP working party made up of 8 LTOA members which will be looking at drawing up guidance for tree officers and contractors.
The LTOA – in association with Treework Environmental Practice – has released a new industry publication: Detecting and identifying canker stain of plane. This 48-page A5 colour booklet contains all of the essential information about canker stain (Ceratocystis platani) and should be regarded as essential reading for anyone interested in finding out more about the disease.
It includes chapters detailing morphology and infection strategies, movement and spread, symptoms, practical survey tips, sample collection and fungal identification, the UK and Italian methods of prevention and control and a comprehensive list of references and further reading. The text is accompanied by colour photographs on almost every page and drawings/diagrams to assist identification and diagnosis.
The booklet was authored by international expert in Ceratocystis platani Professor Lucio Montecchio, of De Rebus Plantarum at the University of Padua. This 2nd edition English-language version has been revised and updated by John Parker of the LTOA and Neville Fay of Treework Environmental Practice to include additional material relevant to the UK situation, including the methodology and results of the LTOA Protected Zone Status surveys for Ceratocystis in 2014, 2015 and 2016.
Since 2014 the LTOA has been leading on monitoring plane trees in London for the presence of canker stain, working closely with the Forestry Commission, Forest Research and several tree officers and managers to survey thousands of trees across the capital to meet the requirements necessary to retain Protected Zone Status This ensures that plane saplings can only be imported into the country from other areas which have been confirmed as being free of the disease.
The LTOA has developed considerable expertise in the subject and in October 2016 was confirmed as the UK partner in a new pan-European Euphresco project – Identification and early detection of Cryphonectria parasitica and Ceratocystis platani occurring on trees in Europe.
Copies of the booklet are priced at just £5 and are available to purchase from the LTOA.
Highways Magazine October 2016 article 'Branching out' John Parker, Chair of the LTOA, discusses the benefits and challenges of trees in pedestrian areas.
The piece can be found on page 46.
Essential Arb Autumn 2016 article 'London Tree Officers Association - stronger together' by Dr Terry Mabbett who recently met up with Becky Porter, Executive Officer of the LTOA. Here he shares her observations. He also talked with Colleen O' Sullivan, Tree Officer at LB Camden.
The London Tree Officers Association is holding a seminar on morning of Monday 18 July at Kings Cross, London looking at trees, air quality and the heat island effect.
The speakers will be Professor Rob Mackenzie, Director, Birmingham Institute of Forest Research talking about air quality and urban form: the role of trees and the urban forest and Professor Rohinton Emmanuel, Director of the BEAM Research Centre, Glasgow Caledonian university talking about heat islands, urban form and the green infrastructure: thermal comfort and energy implications.
Air quality in London has been front page national news on several occasions in recent weeks. Temperatures over the first four months of 2016 indicate that the year will globally be the hottest on record – just as 2015, 2014 and 2013, were before it. The role of trees in mitigation of and adaption to climate change is more generally recognised daily – the odd pseudoscience put down of trees as polluters notwithstanding.
At least two London borough Tree Officer Teams, using the LTOA designed OSCCA and the i-Tree Canopy tool have determined the percentages of canopy cover under their control – and by implication, the limits to what they can achieve directly in increasing canopy by planting.
The LTOA has its own Trees and Health working party and is working with other partners on how to turn the many initiatives on trees and health into practical projects which can benefit London’s air – and at the same time fulfil the host of other roles that trees have in our general wellbeing. It is a general presumption that it is Local Government which will deliver the bold increases in tree canopy and green infrastructure which are required, but ironically seldom recognised that it is a healthy population of tree officers that holds the detailed experience and knowledge keys to deliver.
The LTOA Working party have collected a range of references on trees, health and wellbeing, which will soon be posted on the website. We look forward to contributions on what our members are achieving in this arena spreading the word and deed. We need to build on the growing realisation that trees have an enormous benefit to public health.
LTOA Exec and Trees and Health Working Party