Characterising the microbial interactions that drive organic sulphur cycling in Antarctic waters

These data come from a set of experiments conducted on the coastal waters near Davis Station in January 2017. The first set of data are from a transect near the Sorsdal glacier and out to sea, to characterise DMSP-mediated phytoplankton bacteria interactions along a salinity gradient. The second data set are from a series of incubation experiments to gain deeper insight into the role of various infochemicals in Antarctic phytoplankton-bacteria relationships. Specifically, DMSP, VitB12, Tryptophan and Methionine. The last data set is derived from two incubation experiments: a short term DMSP addition experiment to look at its uptake and utilisation by the microbial community; and a longer-term (5 day) stable isotope probing experiment to track DMSP through the lower trophic food web.

本数据集源自2017年1月于戴维斯站（Davis Station）近岸海域开展的一系列实验。第一组数据采自索斯达尔冰川（Sorsdal Glacier）近岸至远海的断面样带，旨在表征沿盐度梯度分布的二甲基巯基丙酸内盐（DMSP）介导的浮游植物与细菌间的相互作用。第二组数据源自一系列培养实验，旨在深入解析各类信息化学物质在南极浮游植物-细菌互作关系中的调控作用，具体包括二甲基巯基丙酸内盐（DMSP）、维生素B12（VitB12）、色氨酸（Tryptophan）以及甲硫氨酸（Methionine）。第三组数据源自两项培养实验：其一为短期二甲基巯基丙酸内盐（DMSP）添加实验，用以探究微生物群落对该物质的吸收与利用过程；其二为为期5天的长期稳定同位素探针实验，以追踪二甲基巯基丙酸内盐（DMSP）在低营养级食物网中的传递路径。