Vieira Bruno J, Freitas M C, Wolterbeek H Th
Campus Tecnológico e Nuclear (CTN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela, Lisboa, Portugal.
Reactor Institute Delft, Department Radiation Science & Technology, Section Radiation and Isotopes for Health, Technical University Delft, Mekelweg 15, 2629 JB, Delft, The Netherlands.
Environ Sci Pollut Res Int. 2017 May;24(13):11991-11997. doi: 10.1007/s11356-016-6868-x. Epub 2016 May 21.
To evaluate the effects of the ambient climatic conditions in lichen vitality along some well oriented transect in different altitudes, lichen transplants of Parmotrema bangii were exposed approximately every 250 m starting from 50 to 1500 m during a 1-year period in 3 transects along Pico mountain at Azores; electric conductivity of leachates, elemental concentrations, and the ambient conditions such as temperature, precipitation, humidity, and altitude were the compared parameters. According to the obtained values of electric conductivity, it is credible to consider that vitality was not seriously affected under different altitudes. In accordance with previous studies, electric conductivity values in this study show high negative correlation with precipitation and humidity. The significantly high differences between minimum and maximum electric conductivity values found along the altitude transect makes that, when comparing elemental concentrations in time or spatial series, it is required a comparison with lichen vitality, because the different vitality stages could induce variability in metal uptake.
为了评估不同海拔高度沿某些定向良好的样带的环境气候条件对地衣活力的影响，在亚速尔群岛皮科山的3条样带中，从50米到1500米每隔约250米放置棒状帕氏地衣移植体，为期1年；比较的参数有浸出液的电导率、元素浓度以及温度、降水、湿度和海拔等环境条件。根据获得的电导率值，可以认为在不同海拔高度下活力并未受到严重影响。与先前的研究一致，本研究中的电导率值与降水和湿度呈高度负相关。沿海拔样带发现的最小和最大电导率值之间存在显著差异，这使得在比较时间或空间序列中的元素浓度时，需要与地衣活力进行比较，因为不同的活力阶段可能会导致金属吸收的变异性。
