Anatomical properties of compression wood

Light microscopy of compression wood in Sitka spruce

Photographs Forest Research

  • Photograph - severe compression wood
    Severe compression wood
  • Photograph - normal latewood
    Normal latewood
  • Photograph - normal earlywood
    Normal earlywood

Scanning Electron microscopy of compression wood in Sitka spruce

Photograph courtesy of Centre for Ecology and Hydrology

Electron microscopy photograph of Sitka spruce

Measurement of microfibril angle

Photographs courtesy of University of Florence

Photograph - microfibril-measurementEach 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.

Photograph - microfibril

Microscopic examination of compression wood in larch

Photograph courtesy of University of Florence

Microscopic examination photograph of larch