Light microscopy of compression wood in Sitka spruce
Photographs Forest Research
Severe compression wood
Scanning Electron microscopy of compression wood in Sitka spruce
Photograph courtesy of Centre for Ecology and Hydrology
Measurement of microfibril angle
Photographs courtesy of University of Florence
Each single portion of the ring(EW and LW) are subjected to stress cycles (wetting and drying).
Microscopic section of 15-18 m in thick are cut and coloured using iodine solution, according to Senft & Bensted method.
25 angles measured for each portion of annual ring.
Microscopic examination of compression wood in larch
Photograph courtesy of University of Florence