BRYOPHYTES AS INDICATORS OF RADIOCESIUM DEPOSITION IN NORTHEASTERN ITALY

Samples of moss carpets growing in forest vegetation have been used to map radioactive fallout in northeastern Italy. The main factors affec ting data variability are th e inclination of the carpets, water absor bing power, and their thickness. The best suited bioindicator proved t o be Ctenidium molluscum. The results indicate that these carpets were able to intercept most of the radiocesium deposited after the Chernob yl accident, and that the removal half-time in the survey area is of a pproximately 46 months.