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Disparity in 90Sr and 137Cs uptake in Alpine plants: phylogenetic effect and Ca and K availability
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Disparity in 90Sr and 137Cs uptake in Alpine plants: phylogenetic effect and Ca and K availability
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Journal Article
Disparity in 90Sr and 137Cs uptake in Alpine plants: phylogenetic effect and Ca and K availability
2012
Overview
Background and aims
Uptake of
90
Sr and
137
Cs in plants varies widely between soil types and between plant species. It is now recognized that the radionuclide uptake in plants is more influenced by site-specific and plant-specific parameters rather than the bulk radionuclide concentration in soil. We hypothesized that the stress which Alpine plants experience because of the short growing season may enhance the phylogenetic effect on the
137
Cs and
90
Sr transfer factors as well as the dependency of the uptake by plant to the concentrations of exchangeable Ca and K of soils.
Methods
We carried out a field study on the
90
Sr and
137
Cs uptake by 11 species of Alpine plants growing on 6 undisturbed and geochemically different soils in the Alpine valley of Piora, Switzerland.
Results
Results show that a strong correlation exists between the log TF and the log of exchangeable Ca or K of the soils.
Conclusions
Cs uptake by
Phleum rhaeticum
(Poales) and
Alchemilla xanthochlora
(Rosales) is more sensitive to the amount of exchangeable K in the soil than the corresponding uptake by other orders. Moreover, the
90
Sr results indicate a phylogenetic effect between Non-Eudicot and Eudicots: the order Poales (
Phleum rhaeticum
) concentrating much less
90
Sr than Eudicots do.
Publisher
Springer Netherlands,Springer
Subject
Agronomy. Soil science and plant productions
/ Animal, plant and microbial ecology
/ Biological and medical sciences
/ Biomedical and Life Sciences
/ Ecology
/ Fundamental and applied biological sciences. Psychology
/ General agronomy. Plant production
/ Phleum
/ Soil-plant relationships. Soil fertility
/ Soil-plant relationships. Soil fertility. Fertilization. Amendments
/ valleys
