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On increment measurements with the Arnberg microdendrometer.


, : On increment measurements with the Arnberg microdendrometer.. Allg. Forst- u. Jagdztg, 132: 8, 206-12

Describes hourly variations of diameter readings at b.h. on three 55-year and two ca. 110-year Spruce trees on various days during the growing season, and discusses the effect of meteorological factors on them. On clear days with dry air, when transpiration was high, diameters decreased from sunrise to the early afternoon by up to 0.5 mm., i.e. by amounts in the order of magnitude of a week's increment, whereas on cloudy, humid days there was sometimes a slight increase.

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