Decay images

[gibbon]

Some shots of decay caused by Inonotus dryadeus.

 

Decay primarily on undersides of roots, but whole roots can be effected in latter stages of decay. Orange dots show the extent of decay

[chris cnc]

similar shots to earlier in the thread, but here goes anyway.

 

Laetiporus sulphureus decay on oak

[David Humphries]

Some shots of decay caused by Inonotus dryadeus.

 

Decay primarily on undersides of roots, but whole roots can be effected in latter stages of decay. Orange dots show the extent of decay

 

 

 

Fine set Matt, thanks for posting.

 

Very similar decay to Merip by the look of those roots

 

 

 

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[David Humphries]

similar shots to earlier in the thread, but here goes anyway.

 

Laetiporus sulphureus decay on oak

 

 

 

Open thread Chris, the more the merrier.

 

Helps builds the "picture"

 

 

Would be good to get a whole variety of species associated decay up here though.

 

 

 

 

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[Tony Croft aka hamadryad]

I'll second Tony Sorenson's comment about a book - there must be a market for something between the picture guides and the weighty tomes.

 

The picture guides tend to have just one picture of a bracket in it's prime and the tomes aren't great for id purposes. It'd be nice to have an in-depth picture based guide, showing the FBs at all stages + post mortems. Maybe include some of Hama's observational / theoretical stuff to spice it up a bit.

 

I think its time a few of us got our heads together and made a joint project, if some only want to include images rather than content thats O.K

 

David, Andrew cowen, Gibbon, we have the knowledge and images to make something special, one that will be a classic text book, are you in?

[Bundle 2]

Fine set Matt, thanks for posting.

Very similar decay to Merip by the look of those roots

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Similar to merip? It is a root rot although a white rot. Perhaps you are right.

I was at Hatfield at the weeks beginning and listening to the likes of Dr D and other fung specialists. It was repeated throughout that Innonotus dryadeus will/can cause concerns but that at a late stage....That it takes time to get established.

Those pics of Matt's look very like the oak in question is coping well with the decay process....some decay there obviously, but main buttress roots look as if they are pulling their weight?

Id be a bit concerned by that bright orange crap tho'

[David Humphries]

Dr D and I were speaking a week or so ago about dryadeus at height on trunks.

Interested as to whether he made mention of that or not Tim?

 

 

 

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[Bundle 2]

Good question David...! In fact, over the two days, the only specific mention as to location in relation to the Innonotus dryadeus and the FB's on trees was made by David L. His assertion seems not to include appearing higher up the stem. I am guessing that the significance of decay low down on the bole ( around the base and in close proximity to the buttress roots then) is of more consequence...or so the theory goes!

I am not sure it does the fungus any favors to exclude the possibility of it fruiting higher.....Much of what was said re fungus and trees was generic.( I felt like telling the Lonsdales and Butlers of this world to look in the fung threads here.)

I digress. David made the point that you will see the dryadeus between buttress roots . He appeared to make an indication about the topographical areas the fb's more commonly prefer on the stem...( not explaining myself very well here! ) IE-In dips and crevices etc. Nothing further was said in this respect except possibly again, the assertion that the FB's location is not necessarily indicative of the area of decay.( Or that the FB can easily be some distance from the food source I suppose.)

BTW-Hatfield was relatively quiet from the fungus point of view and in comparison to other sites this year although the grassland/pasture had some depending where we were...!

It maybe of interest to note that in relation to trees and decay, the moisture factor was an issue that seemed worthy of emphasis. David L obviously convinced that the dryadeus is pumping moisture out of the tree/substrate...Whilst this would seem to make good sense, and tie in with the point about moisture and anaerobic conditions being detrimental to fungal lifecycles, I am not sure why this process wouldn't be seen in a more widespread sense were it being actively used as a strategy by fungi. Maybe there has been some research into this..? If so, it will not , most likely, be research from the UK !

[David Humphries]

BTW-Hatfield was relatively quiet from the fungus point of view and in comparison to other sites this year although the grassland/pasture had some depending where we were...!

 

 

 

Stansted pollution perhaps.

 

 

 

 

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[Tony Croft aka hamadryad]

Interesting, no mention that oak can not only compartmentalise dryadeus, but see it out all together! I.e when the fungi has consumed all saprobic materials, and the teree grows on a new layer "reiteration" that as the saprobic material is consumed the resource runs out and the mycelium dies. Fungi and trees are both capable of winning these battles, its just a question of who has the ideal conditions, and Bundle, many fungi prefer the low oxygen content within the wood, this is well documented, and have evolved to live in low oxygen atmoshperes, so not strictly a case of anerobia being detrimental. Shwarze found hispidus making a mycelial plug on increment core wounds and did not use the wound as a means to circumnavigate the penetrated barrier, indicating a preference for the atmoshpere of high carbon within the woody volume.