from research to reliability through professional alliances
DESCRIPTION
From Research to Reliability Through Professional Alliances. Keith Sacre, Sales Director Barcham Trees PLC. Project Types. From Architectural concepts. to Golf Courses…. To Gardens…. To Street Trees. Chain Saw Massacre (GLA, 2007). Prior 5 year period 39,924 trees removed - PowerPoint PPT PresentationTRANSCRIPT
10th July 2008 Keith Sacre, Barcham Trees PLC
From Research to Reliability Through Professional Alliances
Keith Sacre, Sales Director
Barcham Trees PLC
10th July 2008 Keith Sacre, Barcham Trees PLC
Project Types
From Architectural concepts.....
to Golf Courses…
To Gardens… To Street Trees
10th July 2008 Keith Sacre, Barcham Trees PLC
Chain Saw Massacre (GLA, 2007)
Prior 5 year period
39,924 trees removed 48,129 trees planted
Net gain 8,205 trees
There is no break down regarding species planted and this data only applies to Local Authorities in the Greater London Area.
10th July 2008 Keith Sacre, Barcham Trees PLC
Barcham Trees Figures for Greater London (2005-2008)
Quercus robur
Equates to 6 shade trees every km2 Approximately 23% of trees are supplied into Greater London
Quercus robur Fagus sylvatica Aesculus hippo. Platanus hispanica
Fraxinus excelsior Corylus colurna Acer platanoides Acer pseudo.
9,700 Shade Trees were supplied
10th July 2008 Keith Sacre, Barcham Trees PLC
Six species accounted for 40% of total sales (2005-2008)
Acer campestre spp.
1721 specimens
Prunus spp.
8314 specimens
Sorbus aucuparia spp.
3313 specimens
Amelanchier spp.
1600 specimens
Malus spp.
1217 specimens
Crataegus spp.
1415 specimens
10th July 2008 Keith Sacre, Barcham Trees PLC
Conclusions from the Barcham Tree Supply information
1. Significant numbers of shade trees are being supplied to be planted in Greater London.
2. The percentage of small trees accounts for a very large percentage of the whole
And………….
The number of trees planted by Local Authorities has produced a net gain.
10th July 2008 Keith Sacre, Barcham Trees PLC
But what does net gain mean?
Approximate scale of 12-14cm London Plane (Platanus x hispanica)
Given that a 12-14cm girth Platanus x hispanica will have a canopy volume of between 3-4m3, how many would need to be
planted to compensate for the loss of one of London’s fine Victorian specimens?
10th July 2008 Keith Sacre, Barcham Trees PLC
Extrapolated figures
It is possible to extrapolate if figures have remained constant:
96,000 young trees planted in a 10 year period.
Given 24% loss rate *, 72,000 trees remain. Of which, 23%** are shade trees
* Trees in Towns II (2008)
** According to Barcham figures
10th July 2008 Keith Sacre, Barcham Trees PLC
Perception
“Significant secondary/tertiary canopy cover is not present in the density that it should be.”
Why is it then, if my perceptions are correct, that the secondary and tertiary canopy cover which could be expected given the number of trees planted, is not readily apparent?
10th July 2008 Keith Sacre, Barcham Trees PLC
Planting Specification
To my knowledge there is no nationally agreed model, specification, or standard which is supported by detailed empirical research to provide adequate guidelines.
10th July 2008 Keith Sacre, Barcham Trees PLC
Planting Specification
Why is this given the enormous resources being put into the planting of young trees???
10th July 2008 Keith Sacre, Barcham Trees PLC
Trees in Towns II (2008)
“On average Local Authorities spent £1.38 per head of the population during the financial year 2003/2004. The range of this spending among LA’s varied considerably between £0.08 to £4.93per head. This was similar to the level identified by the 1997 survey.”
“54% of LA’s reported that there had been no real change in their total tree budget over the past 5 years, taking into account inflation.”
Paragraph 101 and 102
10th July 2008 Keith Sacre, Barcham Trees PLC
Questions
1. How can we ensure that the lip service often given by Government and other budget holders or providers is actually converted into serious funding, guaranteed over a prolonged number of years, which would enable Local Authority Arboricultural Officers to convert their undeniable knowledge and skills into the results their own standards would naturally achieve?
2. Perhaps lobby for public tree population management to be a statutory undertaking recognising those publications for the national asset they actually are?
10th July 2008 Keith Sacre, Barcham Trees PLC
Elm
Ulmus ameriana Princeton
At Barcham
In the U.S.A
Ulmus Accolade
10th July 2008 Keith Sacre, Barcham Trees PLC
Dutch Elm Disease Resistance
Breeding Programmes in the USA have resulted in Schmidtts Nursery in Oregon being able to offer 16 cultivars of Ulmus that exhibit resistance to DED.
10th July 2008 Keith Sacre, Barcham Trees PLC
Where is the Research?
Where is the research into the identification, breeding and cultivation of new tree selections in the U.K which in Jeremy Barrell’s words provide ‘species and forms that are likely to be most suited to the urban environment’?
10th July 2008 Keith Sacre, Barcham Trees PLC
Tree Production
Stem Taper
Morus alba ‘Platanifolia’
10th July 2008 Keith Sacre, Barcham Trees PLC
Questions
1. Where is the research to confirm or contest in relation to nursery practice and subsequent planting and maintenance procedures?
2. Are purchasers of trees, if modified production methods can be achieved, prepared to pay for the additional preparatory work necessary on the nursery by moving away from the ‘cheapest option’ analysis, which is so often the critical factor of tree buying, to an analysis of achieving the greatest success and the best value for money in the long, rather than short, term?
10th July 2008 Keith Sacre, Barcham Trees PLC
Options
Rootballed Inside a root ball
Container Grown
10th July 2008 Keith Sacre, Barcham Trees PLC
So….
Are the specifier’s of young trees aware of the varying production methods and their differences, the nursery practices essential for each to be successful, the different handling constraints of each method, the stress trees produced by each may be under because of lifting and planting and the condition of the root systems prior to planting?
10th July 2008 Keith Sacre, Barcham Trees PLC
Where does the nursery fit in?
Nursery
Landscape
Designers
Engineers
The Public
Landscape Contractors
Consultants
Arboricultural Contractors
Politicians
Architects
Landscape Architects
Local Authority Planners
Local Authority Tree Officers Developers
Arboricultural Educators
10th July 2008 Keith Sacre, Barcham Trees PLC
Conclusions
Landscape
Designers
Engineers
The Public
Landscape Contractors
Consultants
Arboricultural Contractors
Politicians
Architects
Landscape Architects
Local Authority Planners
Local Authority Tree Officers Developers
Arboricultural Educators
Nursery
10th July 2008 Keith Sacre, Barcham Trees PLC
So, should nurseries be considered as part of main stream
arboriculture?
10th July 2008 Keith Sacre, Barcham Trees PLC
Thank you for listening.