Accumulation of 137Cs by Carnivorous Aquatic Macrophytes (Utricularia spp.) on the Savannah River Site
| Autor: | Albert L. Bryan, Alexis M. Korotasz |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Utricularia
010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis Aquatic ecosystem General Medicine 010501 environmental sciences Biology Toxicology biology.organism_classification 01 natural sciences Pollution Macrophyte Water column Nutrient Botany Ecosystem Utricularia floridana Utricularia inflata 0105 earth and related environmental sciences |
| Zdroj: | Archives of Environmental Contamination and Toxicology. 75:273-277 |
| ISSN: | 1432-0703 0090-4341 |
| Popis: | Plants are an important mode of transfer of contaminants from sediments into food webs. In aquatic ecosystems, contaminant uptake by macrophytes can vary by path of nutrient uptake (roots vs. absorption from water column). Carnivorous plants likely have additional exposure through consumption of small aquatic organisms. This study expanded on previous research suggesting that bladderworts (Genus Utricularia) accumulate radiocesium (137Cs) and examined for (1) a potential association between sediment and plant concentrations and (2) differences in 137Cs accumulation among rooted and free floating Utricularia species. A strong correlation was found between average 137Cs concentrations in all Utricularia species (combined) and sediments (rs = 0.9, p = 0.0374). Among three bladderwort species at common sites, Utricularia floridana, the only rooted species, had higher mean 137Cs concentrations than Utricularia purpurea, and U. purpurea had a greater mean 137Cs concentration than Utricularia inflata. |
| Databáze: | OpenAIRE |
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