I’ve noticed that many practitioners in Sweden often overlook the significance of ”ribs” (ås or barkås in Swedish) on tree stems and branches. This is surprising, as the presence and interpretation of ribs was well-presented as far back as 1995 by Claus Matteck in his book ‘The Body Language of Trees’, available in both German and English. Fortsätt läsa ”Ribs”

The accuracy of Arbotom

I’ve been using my Arbotom tree tomograph instrument for a year now and am very impressed with its accuracy.


The first set of images below show a Lime (Tilia cordata) infected with the (primarily root and stem) decay fungus Kretschmaria deusta (Stubbdyna in Swedish). Fortsätt läsa ”The accuracy of Arbotom”

Inonotus obliquus and tomography

Inonotus obliquus, also known as ”sprängticka” here in Sweden, is an interesting fungus. I’ve only seen it in Sweden and only on Birch (Betula spp.). Recently I’ve been comparing the actual decay caused by the fungus with the readings from my Rinntech Arbotom tomograph.

Fortsätt läsa ”Inonotus obliquus and tomography”

The Radio Oak

Photo taken by Holger Ellgaard and downloaded from: http://sv.wikipedia.org/wiki/TV-eken

The Radio Oak (called Radioeken or TV-eken in Sweden) was a huge veteran Common Oak (Quercus robur) growing in Södermalm in Stockholm. It was estimated to be in excess of 400 years when it was felled in late November 2011. The felling generated strong feelings including a peaceful occupation of the tree and death threats aimed at the crane operator involved in the felling. I never saw the tree, but some professionals who did consider the decision to fell unnecessary. Fortsätt läsa ”The Radio Oak”