Zalewska Tamara
Institute of Meteorology and Water Management-National Research Institute, Maritime Branch, Waszyngtona 42, 81-342 Gdynia, Poland.
J Radioanal Nucl Chem. 2012;293(2):679-688. doi: 10.1007/s10967-012-1723-0. Epub 2012 Mar 25.
A study was conducted on three macroalgae species: and , the species of the red algae division, and , representing the green algae division, as well as , representing vascular plants. The main aim of the study was to recognize the level of Cs concentrations in the plants, which could be used as a measurement of bioaccumulation efficiency in the selected macrophytes at varying depths, and in the seasonal resolution of the vegetation period: spring-summer and autumnal. The plants' biomass clearly showed seasonal variability, as did the Cs concentrations in the plants. Cesium activity also changed with depth. Seasonal variability in radionuclide content in the plants, as well as the differences in its activity determined along the depth profile, were related mainly to the plant biomass and the dilution effect caused by the biomass increment and reflected the growth dynamics. showed much greater bioaccumulation ability at each depth as compared to , a green algae. Lower concentrations of Cs were also identified in and in mostly as a result of differences in morphology and physiology. can be recommended as a bioindicator for the monitoring of Cs contamination due to the high efficiency of bioaccumulation and the available biomass along the depth profile, as well as the occurrence throughout the entire vegetation season.
红藻门的[红藻物种1]和[红藻物种2]，绿藻门的[绿藻物种]，以及维管植物[植物物种]。该研究的主要目的是确定植物中铯（Cs）的浓度水平，这可用于衡量所选大型植物在不同深度以及植被期的季节分辨率（春夏季和秋季）下的生物累积效率。植物的生物量以及植物中的Cs浓度均明显呈现出季节性变化。铯活度也随深度而变化。植物中放射性核素含量的季节性变化以及沿深度剖面确定的其活度差异，主要与植物生物量以及生物量增加所导致的稀释效应有关，并反映了生长动态。与绿藻[绿藻物种]相比，[红藻物种1]在每个深度都表现出更强的生物累积能力。在[红藻物种2]和[植物物种]中也发现Cs浓度较低，这主要是由于形态和生理上的差异。由于其高效的生物累积能力、沿深度剖面可获得的生物量以及在整个植被季节的存在，[红藻物种1]可被推荐作为监测Cs污染的生物指示物。
