Amelanchier
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Everything posted by Amelanchier
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Thanks for those guys - very helpful and great shots. Gonna be using Mr T's, one of Hamas, one of Daves and that lazy poplar by BBB. Cheers.
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Hey John. The guidance on exemptions advises 5 days not 6, so you could be in a day earlier...
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I've been looking at it with a view to using it to value tree populations - I don't know its utility in terms of general management. I've been using PocketGIS for a few years now and have no (major) complaints.
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Thats it dude. When the tree puts more wood on to strengthen a part thats overloaded. I've got lots of phone cam images but they won't stand being resized.
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I'm putting a document together to briefly explain tree biomechanics and would like some lovely photographs to illustrate a few points - so as I'm paying the price now for never buying a good camera, I though I better cast my net in the webs best waters. I need photo examples of: The axiom of unifom stress - perhaps a nice bit of adaption around an object, preferential callus on a pruning cut etc. The law of the minimal lever arm - I'd love a classic topped out pine! Self optimisation - I have a few of these but some nice reaction wood shots would be helpful. Thanks in advance gang.
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Let the borderline jokes begin...
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To describe a single false rock? I guess so! I see where you're going with that!
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Cheers for finding the link Dave - I replied via my phone and couldn't face searching...
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Aesculin There's a thread about here somewhere...
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What's with this persistant confusion between wood and stone? Petrification is the conversion of organic material into stone and monoliths are gurt blocks of rock not tree. I thought there was some new cool alien disease causing premature and rapid fossilisation in Macclesfield...
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I'd suggest that the arisings belong to the tree owner until they leave the site unless otherwise stipulated in your contract. However, if you have added value to those arisings (perhaps by milling them) then it would be reasonable to expect compensation for that loss should the client choose to keep the timber.
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I agree with the Gorilla - Kretzschmaria deusta a.k.a Ustulina deusta
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I ran into all this the other day from a very different angle (long boring story with no pictures) and it seems that there is also another term in botany for this phenomena - Anastomosis. Quite what the difference is, or if there even is one, I don't know.
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Giorgio, Thank you for taking the time to post. I understand and concede the points you have raised with regard to my use of your 2008 paper. My intention was not to critique your research or the utility of thermography. Indeed I consider that the science is sound and there is a great deal of value to its application. However, it would seem that the historic claims for the method (in the UK) are only recently being substantiated with the relevant research. Or that the research was 'out there' and that the sceptical should 'go and find it'. That was the focus of my criticism. I don't consider it relates to you or your work - more the industry press and marketing mentality. Perhaps you might attach your full length response as a separate document? That way, your original response could be viewed in full.
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Laurel – Love the smell, but is it really bad for you?
Amelanchier replied to John Hancock's topic in General chat
There is a classic experiment I remember at school that demonstrates the potency within a confined space of the volatile cyanide produced by crushed Cherry Laurel leaves. EiC July 2008 - Feature - Exhibition chemistry: Toxic Hydrogen Cyanide I think we used ladybirds IIRC. Note "The UK workplace exposure limit for HCN (short-term, ie 15 minute exposure) is 10 ppm (11 mg m-3)." Also note that I have no idea as to the concentration within a truck full of chip! Cyanide screws with enzymes and results in cell death - so perhaps sucking in great lungfuls of the aroma ain't such a good plan. -
I guess it might be a problem if you can't spell precedent... Try chapter 3 of Mynors - The law of trees, forests & hedgerows. 0.23 seconds by the way. Mr Mynors (you will no doubt have his home telephone number) updated and confirmed this list of relevant case law at both the AA Conference on the 23rd September and at a Barchams Seminar on the 28 October 2009 with the following; Lemmon v Webb [1894] 3 Ch1, CA; [1895] AC 1, HL Mills v Brooker [1919] 1 KB 555 Alan Wibberley v Insley [1999] 1 WLR 894. HL Haycocks v Neville [2007] EWCA Civ 78 So who do I invoice?
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Are you agreeing with me? I must have got something wrong...
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Rubbish. The facts are available via google (which can even tell you how many seconds it took to find them). Those that aren't - I'll post for the sheer philanthrophy of it, if required. As SWB has alluded to - we're here to share knowledge not to spin the illusion of elusive superiority and elitism. IMO stating that info is only available for a charge is as good as saying you don't know. Its symptomatic of the insecurity of ignorance.
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Just to muddy the waters guys - if the tree is on the boundary then it is entirely possible in law for it to be jointly owned by the landowners. Dean, I guess the ultimate test for your liability regarding this matter would be whether a court would deem it 'reasonable' for you to have checked. If circumstances should have made you suspicious then perhaps it would be reasonable to check further - if not, then never mind. The guy in the wig will decide. Back to the OPs question. If your not comfortable with the situation - ask the questions of the neighbour. Its fairly normal to pop round and inform them anyway, so use that as an excuse.
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decay detection, weapon of choice?
Amelanchier replied to Tony Croft aka hamadryad's topic in Tree health care
I get the 95th percentile part and recognise the value of a comparison with a normal distribution and what information that can give you. What I was getting at was - Given the variability of continuous VTA symptoms such as bark congestion under a subsiding limb how do you ensure your measurements of structural integrity relate consistently? Do you divide the spectrum of a symptom up into categories? Presumably there is a bias to symptoms that relate to defects for which there is a rule such as t/r? -
decay detection, weapon of choice?
Amelanchier replied to Tony Croft aka hamadryad's topic in Tree health care
IMO tree valuation is a vital piece ofthe Arbs arsenal. Its useful to be able to establish monetary values on environmental assets with a systematic system so that proper comparisons can be made with other non-green processes/proposals. E.g., Option 1 - A straight driveway is cheaper at £6000 but you need to loose the £12,000 value Oak = Net cost £18,000. Option 2 - Longer driveway avoiding Oak or No Dig solution costs £8000 but retains above Oak = Net cost £8000. A gross simplification but you see the point. People understand money - they might argue with your valuation but with a structured system you have a defence. -
Prime advertising space there!
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decay detection, weapon of choice?
Amelanchier replied to Tony Croft aka hamadryad's topic in Tree health care
This is an approach I find very interesting Marcus. How do you ensure consistency between VTA symptoms and determine the actual likelihood of failure? What are the scale of thresholds in your methodology? It does seem to compliment the concept that the most important part of hazard assessment is an understanding of the 'normal' tree. Getting a proper feel for the normal distibution doesn't seem to have been done to date - I suppose the national tree failure database has a part to play in this? -
Are ninjas not a problem round your way? Woods round here are full of them. And zombies.
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I would suggest a generic RA should be able to cover most hazards - the biggest being lone working. I'd only produces a site specific RA if there was some specific about the site! For example cliffs / old industrial sites / unexploded ordnance / ninjas etc.
