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David Humphries

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About David Humphries

  • Rank
    Site Moderator, Raffle Sponsor 2013, 2014, 2015
  • Birthday 16/07/69

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

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  1. Fungi ID

    Thanks for the follow up
  2. Dual Decay

    Birch with Fomes fomenatrius and Piptoporus betulinus on the same branch. A more common occurrence in the north of the UK but less common to see both species on the same tree host here in the south east. The Fomes decay is a simultaneous white rot and the Piptoporus decay is a brown rot, both are clearly evident here in seperate branch sections found on the floor. The tip of the branch is where the majority of the Piptoporus colonisation and fruiting is located and the base of the branch is mostly colonised by the Fomes. Sliced and diced to have a closer look at the over lapping decay colonisations along the branch. Francis Schwarze (Fungal strategies of Wood Decay in Trees) mentions that a common occurance in advanced colonisation of Fomes decay are cracks filled with white/yellow mycelial skins, which can be clearly seen in these last cross sections taken close to the branch union just below the fruiting body.
  3. Managing Trees with Decay & Dysfunction

    No, as I mentioned above, Laetiporus decay was the only 'known' associate before that tree failed. That tree never had resinaceum fruiting on it before.
  4. Managing Trees with Decay & Dysfunction

    Red oak with long time colonisation of the white rot dysfunction and decay of Ganoderma resinaceum. Over the last 12 years we've been mapping the decay in the trunk via watching the annual fruit body locations, the ongoing buttress development, accustic signature (nylon hammer) and utilising both the earlier Dmp decay microdrill and then the more advanced IML Resi Pd400 to determine the ongoing residual wall strength and proportion. A neighbouring red oak failed at the base (Laetiporus) in the St Judes storm of a few years back. The exposure to further wind load from the loss of its neighbour has led us to eventually start on a phased reduction by removing 2m of the canopy. (Rob and Jack climbing) Depending on development of epicormic buds (red oak are known for strong epi growth), we intend to continue the reductions to bring the canopy down further in height and volume.
  5. National Meripilus Network

    Hi Nick, thanks for sharing. Any shots of the base of the trunk before you felled it. Would be interested in seeing if there were any buttress fluting?
  6. Chalara fraxinea - Generic thread

    As a reflection of the distribution, I witnessed chalara on my travels last week at 3 seperate sites across the south and east of the U.K. Where I work at an open space in north London, At the 800 year old continuous coppice of Bradfield woods near Bury St Edmunds, Suffolk and on the chalk down lands of Lyscombe and Highdon in Dorset whilst on an ATF field trip. .........depressing
  7. the 'todays job' thread

  8. poisonous tree species

    Californian bay laurel/headache tree (Umbellularia californica) is one to consider have a look at this old thread on toxic trees.........
  9. 30th Anniversary

    Good thread Andy, will be interesting to hear others memories. Anniversaries are weird things aren't they, certainly make you ponder on your own involvement but equally will mean jack to a large number of those in the industry who might not have even been born by then. There hasn't really been any weather events in the UK since (accept perhaps the one at the begging on the nineties) that have been anywhere near as devastating as the 'great storm' On reflection, (I was at the end of a Hort apprentice at the time) that storm was the single thing that led to my career in Arboriculture. Joining up the tree team and helping to clear up the devastation for months afterwards. We had huge fires going in our car parks for weeks (wonder what Sadiq Khan would have said about that) that ourselves and our neighbouring local authorities used to get shot of the timber. Such a waste. I was talking to a well known consultant in the south recently who was retelling how he went from a three man outfit pre-storm, to 15 guys over the storm clear up and the next couple of years, then business just dried up as home/land owners just didn't have the money to spend on trees, so he wound down the gangs and went in to consultancy. This particular anniversary led me to think about and write an article recently on the effect of the storm on Ancient and veteran trees, I probably wouldn't have thought about it had the anniversary not been coming up.
  10. Tis the season to see Fungi, fa la la la la....

    Pholiota squarrosa on a cherry monolith from earlier this morning in Dorset
  11. My Last Climbing Hurrah !

    Cheers Sean, appreciated. Would be good to see you put a blog together to update on your recovery and how you adapted to it and all the other stuff you've been up to.
  12. Tis the season to see Fungi, fa la la la la....

    Done bits and pieces, but not considered a whole book on me tod, that's a fairly big undertaking. I did contribute most of the in situe fruit body images to the Arb Associations Fungi on Trees - An Arborists field guide, helped Steve put together the Arbtalk Fungi App and have written a few articles on fungi and decay. Oddly enough I was just literally asked today to help put together a new field guide, but imagine that will be a while till it becomes available. I sometimes even inspire myself
  13. Tis the season to see Fungi, fa la la la la....

    Old ash with loads of Ganoderma yawn-yawn, Pholiota and Pluerotus
  14. Tis the season to see Fungi, fa la la la la....

    That is a sizeable puffball mate, did it make it home to be gourmetfied, or was it riddle with slugs and maggots?
  15. Interesting Biomechanics

    Big birch burr


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