Modulated UV-B supplementation system at Botania

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System

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View of the experimental site.

View of one lamp frame.

Detail view of lamps in one frame.

Detail view of ballasts in one frame.

View of electrical cabinet with controller.

Detail view of the Campbell CR10 datalogger used to control the system.

• A paper describing the irradiation system has been published in BIOTRONICS 28, 109-120, 1999.
   A preprint of the paper and the listing of the logger program used to control the lamps are available in PDF format.

Experiment

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Two-years old birch seedlings growing under increased ultraviolet-B radiation. Also litter bags can be seen.

Close up of a litter bag.

Other Links

• see also a summary of the project in which the modulated system was used.

        Author: Pedro J. Aphalo