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Tommy Hutchinson

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Everything posted by Tommy Hutchinson

  1. Hi Medlar, Try Hi-Line contractors south west: Tree surgery | Consultancy | Training - Hi-Line Contractors SW LTD WWW.HI-LINE.CO.UK A family owned business established in 1998, we are one of the UK’s leading tree surgery and management companies. Call today for a FREE quotation. Cheers Tommy
  2. I survey trees on the railway, big trees get recorded and if deemed safe a re-inspection 1,2,3,4, years and so on is suggested. But some stretches of line will be inspected on a yearly bases... There are literally 10's of thousands of big trees within falling distance of the rail, why on earth would you fell them all because they will grow old and die? This is firstly just want on destruction, secondly not practical and thirdly not sound arboricultural practice. Trees get old and die yes, but you phase manage them out of the tree stock. And of course the railway surveys have less options because crown reductions will rarely be undertaken, it's fell or keep, but I certainly see lots of large healthy trees next to the rail which have a long life ahead and are monitored.
  3. There's thousands of big trees next to the railway, so what?
  4. What's the client's problem with the tree? Why not get a professional arboricultural report done? May that will ease their worries, what ever they may be ^
  5. Yes, some good one's in there. I particularly like this one: 'The tree is a fountain of the forest (Rayner 1998) moving ground water to the clouds.'
  6. Veteran-trees-and-conservation-arboriculture-Dutch-Tree-Conference-Velp-10-June-2016.pdf
  7. What I'm saying is, what's the point?! Just tell the owner the tree is healthy and no action needs to be taken, re inspect in 2 years for example...
  8. Right, but the owner wants 'something' done?
  9. The pictures showing the mycelium penetrating the epidermis are insane/cool!
  10. No, I don't think I've seen it. I'll check this study now.
  11. Wood_decay_under_the_microscope - Francis Schwarze https://www.researchgate.net/publication/229077882_Wood_decay_under_the_microscope
  12. Yes, Frank is interesting. I've been to a few his talks. I'd have a problem reading in German though... :-) Yep, we know very little! At this moment in time I feel a lot findings within the realm of trees are making us ask more questions... However, there are some answers! Biomimicary has helped civilisation a lot and the genius of nature is a wonderful thing. But, not sure how we would construct buildings with a xylem and phloem matrix. ?
  13. Yes Gruber, and now a few others. I agree they all have limitations, some more so than others. Especially when you start to reed extensively into the science (if any) and methodologies behind them. Arboriculture just needs to evolve a bit more, it's happening but it's slow because it's a very niche subject, but becoming more credible and known. This will hopefully mean more research funding thus progression(s).
  14. FOUNDATIONS OF TREE RISK ANALYSIS: Use of the t/Rratio to Evaluate Trunk Failure Potential https://www.urbanforestanalytics.com/sites/default/files/pdf/bond_tR.pdf
  15. More reading: Shell-wall thickness and breaking safety of mature trees http://ps.ictinternational.com/content/uploads/2014/03/Shell-Wall-Thickness-and-Breaking.pdf
  16. The only time it should be a starting point is when a tree has perfect cylindrical residual wall which is closed. And how many hollowing trees have these features?! Arborists have been using the t/R ratio for decades unbeknown to the lack of scientific credibility and its near uselessness for predicting tree failure.
  17. :-) Tree risk assessment:a review of methods: https://www.researchgate.net/profile/Peter_Sterken/publication/323757808_Tree_risk_assessment_a_review_of_methods/links/5aa94cfd458515178818bbe1/Tree-risk-assessment-a-review-of-methods.pdf
  18. And some more: Overview of techniques and procedures for assessing the probability of tree failure - David Lonsdale, 1 - DL tree Statics Final Version 031203.pdf
  19. Some more reading: Why t/R Ratios Are Not Very Helpful https://www.validtreerisk.com/resources/Documents/Why%20tR%20Ratios%20Don't%20Help%20v1.1-2019.pdf
  20. The Visual Tree Assessment One-Third Rule: Frequently Applied, but Mostly Irrelevant http://download.rinntech.com/2018_Rinn_SMA_OneThirdRule.pdf
  21. Look how cool this is: Figure 1. Why spatial scales matter. To illustrate the situation that most microbes find themselves on leaf surfaces, assume a human subject on the island of Trinidad, which has similar proportions to a human as a bean leaf to a bacterium. Assuming that the human cannot move, has no vision, nor sense of hearing and is left only with its sense of touch and sense of smell, the immediate surrounding becomes vitally important. In other words, that human will not be able to perceive any other part of the island. This is comparable to how individual single‐celled microbes perceive a leaf. Without sufficient amounts of water, free movement of bacteria is restricted and they only perceive signals, such as sugars, amino acids or volatiles, diffusing to their occupied site. Thereby, the microhabitat conditions drive the experience and behaviour of individual bacteria.
  22. The Pyhllosphere! :-) 'The surface area of the phyllosphere is approximately twice as great as the land surface area, and this environment provides a habitat for numerous microorganisms that colonize leaf surfaces (where they mostly form aggregates) and the spaces inside leaves.' https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.15054
  23. What's interesting is that fungi are allways present, they never will not be. They're just waiting for the environment to change so they can switch from latent to active. I think trees are more complex than we give them credit for. Just look into the numbers of life that live in their leaves (phyllosphere), it's insane! Ultimately arborsits would like to know the full extent of the structural damage caused by fungi. We're getting closer and an arborists approach must be holistic. However, not everyone has all the detection equipment to use to help assist a more holistic and accurate decision, this can, and still does mean premature deaths of trees.
  24. The Parenchyma of Secondary Xylem and Its Critical Role in Tree Defense against Fungal Decay in Relation to the CODIT Model Frontiers | The Parenchyma of Secondary Xylem and Its Critical Role in Tree Defense against Fungal Decay in Relation to the CODIT Model | Plant Science WWW.FRONTIERSIN.ORG This review examines the roles that radial and axial parenchyma (RAP) plays against fungal pathogens in the secondary xylem of wood within the context of the CODIT...

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