Jump to content

David Humphries

Super Moderator
  • Content Count

  • Joined

  • Last visited

  • Days Won


1 Follower

About David Humphries

  • Rank
    Site Moderator, Raffle Sponsor 2013, 2014, 2015
  • Birthday 16/07/1969

Personal Information

  • Location:
    Suffolk & London
  • Interests
    Family, veteran trees & biodiversity
  • Occupation
    Trees Management Officer at the City of London's North London Open Spaces
  • City

Recent Profile Visitors

10,507 profile views
  1. David Humphries

    Tropical Canopy Access Odyssey

    Excellent, thanks for taking the time to share Rob, looked like an inspiring trip.
  2. Slightly different machine and I’m coming from the local authority perspective so don’t pay for the calibration out of my own pocket, but do have to justify the annual cost of calibration to senior management. The PD series flashes up that it requires calibration after a thousand drills or a callender year, which ever comes first. (Usually the latter for us) We use the Resi PD400 a fair bit and the graphs do go in to reports for where we are condemning or retaining a tree. Having an in date calibration certificate as an appendix to a report gives the report more weight in my opinion. Also gives us confidence in knowing the motors are being looked at and service where necessary. I would think from your perspective (as you’ve already alluded to) it will depend on how often you utilise it as a tool.
  3. David Humphries

    Self Bracing

    Suspect this beech union would fail if one or both of these natural braces were compromised. Would be fascinating to sever one and see how long the union withstood the load.
  4. David Humphries

    Arb Kitten

    Milly, thinking she’s a lioness hiding in the Serengeti
  5. David Humphries

    Tis the season to see Fungi, fa la la la la....

  6. Tried getting on but already booked, met Giovanni in Poland a few years ago, very engaging. Hopefully catch it at conference.
  7. David Humphries

    Fungi ID on mature deodar.

    It is as Nepia suggests, Ps 👍
  8. David Humphries

    Tis the season to see Fungi, fa la la la la....

    Some nice examples
  9. David Humphries

    An easy one

    Great edit Reg, an easy watch. Particularly like the reflection of the stick falling in the window @ 2:50 and the cat running away ! What makes you choose the battery topper for the stripping?
  10. David Humphries

    Decay images

    Poked it a few times over a number of years, so had a good idea of the level of decay.
  11. David Humphries

    Decay images

    I've posted this Red Oak before (evidence of both Ganoderma resinaceum & Ganoderma australe) but on passing today it was worth noting the decay process over the two years since it was felled. It appears that the reaction boundaries between the two decay zones of the G. resinaceum and G. australe colonies still remain quite lignified.
  12. David Humphries

    Show us ya birds !

    Swan sitting on 10 eggs on one of the ponds at work.
  13. David Humphries

    Tis the season to see Fungi, fa la la la la....

    Apparently it does
  14. David Humphries

    Tis the season to see Fungi, fa la la la la....

    Impressive that you have your own branded fungi !
  15. David Humphries

    Fungal Bracket on Larch

    Ganoderma spp. Possibly G. australe. Cocoa brown spore on the bracket surface and ivy leaves and white pore layer is the key here. Phaeolus schweinitzii has pale yellow spore.


Arbtalk.co.uk is a hub for the arboriculture industry in the UK.  
If you're just starting out and you need business, equipment, tech or training support you're in the right place.  If you've done it, made it, got a van load of oily t-shirts and have decided to give something back by sharing your knowledge or wisdom,  then you're welcome too.
If you would like to contribute to making this industry more effective and safe then welcome.
Just like a living tree, it'll always be a work in progress.
Please have a look around, sign up, share and contribute the best you have.

See you inside.

The Arbtalk Team

Follow us


Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.