What were radiation-induced effects on plants and animals?
Increased mortality of coniferous plants, soil invertebrates and mammals and reproductive losses in plants and animals were seen in high exposure areas up to a distance of 20-30 kilometers. Outside that zone, no acute radiation-induced effects have been reported. With reductions of exposure levels, biological populations have been recovering, though the genetic effects of radiation were seen in both somatic and germ cells of plants and animals. Prohibiting agricultural and industrial activities in the exclusion zone permitted many plant and animal populations to expand and created, paradoxically, “a unique sanctuary for biodiversity.” Does dismantlement of the Shelter and management of radioactive waste pose further environmental problems? The protective shelter was erected quickly, which led to some imperfections in the shelter itself and did not permit gathering complete data on the stability of the damaged unit. Also, some structural parts of the shelter have corroded in the past tw