George I assume we are discussing eucalypts? One might expect increases in kino veins. What aspects of quality would be the more important?  Dimensional stability and minimal collapse, or appearance grades?

Hi Geoffrey, the question came from Pines actually, but the same question stand for eucs. W.r.t. eucalyptus appearance grade recovery would be of highest importance, while with the pines total volume recovery - influenced by visual strength and visual appearance for a mostly structural market.

Interesting question of which I have no real experience.  Most pines here seem to be very sensitive to fire and there is always a rush to harvest killed trees after fire before bluestain becomes a problem.  Obviously your trees have survived well with minimal damage (fire scars?). in which case I would expect little effect on wood properties apart from those mediated by growth arising from crown lost in the first year and perhaps improved growth over the coming years if competition was reduced and canopies recovered well.  I'd be interested in reading others experience.

My thoughts as well. Hopefully someone has some experience we could lean on!

Hej Geoffrey, this question is quite tricky as it is difficult to estimate the characteristic (temperature) of a wild fire in the forest. But if you are looking for influence on mechanical properties on timber after forest fire then I can tell you that I found just one interesting study for some weeks ago. It is quite old (1912!) but I still hope it can help you. See the link below.

https://archive.org/details/firekilleddougla11knap

Hi Pierre,

Thanks for the reference, very interesting study, and similar to small tests we've done on freshly felled burnt timber.

An unanswered question for me is still the effect on timber recovery from burnt trees that recovered after the fire. Abnormal growth or resin inclusion following after fire damage might lead to lower recovery of structural timber from these logs.