"The majority of the beech show fruit bodies of Kretzschmaria deusta
(often in both stages, the teleomorph fruiting bodies - black crumbly
crusts, and the asexual anamorph stage), usually associated with old wounds
or removed stems. Often, but not always, this has led to decay; a fair
number of the trees showing infection have plenty of wall-thickness, or
entirely sound bases."
That being the case, risk of failure is low for those trees. So felling
seems premature, for those. It's not onereous to monitor ime. Like tony I
asssume retention is preferred, which seems warranted because trees have
value. page 20 here
http://www.cfeaguisamo.org/webcfea/images/documentos/documentacion_tecnica/arboricultura/REVISTAS/ARBORIST_NEWS/2008/FEBRUARY_2008.pdf
is
about Kd on multistemmed Acer rubrum, fwiw. 5 years later the tree is
walling off Kd still; no further works needed.
Reduction pruning generally works for the structurally compromised. 15%
off the end can increase branch stability 50%.
Probing at the right angles with the right tools can detect enough data
about roots.
Cheers,
Guy Philip Meilleur
SE USA
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