Anchialine cave 16S amplicon sequences and metagenomic dataset

Defined clines in anchialine ecosystems act as selection barriers that influence species distributions. Along with light resources and nutrient limitations, cline areas are recognized promoters of microbial evolution in these complex habitats. To reveal microbial diversity and its potential ecological role in biogeochemical cycles along a salinity gradient, we sampled different water masses and analyzed microbial diversity. The stable halocline promoted sulfide accumulation in anoxic (euxinic) water layers situated between the oxic surface layer (characterized by lower salinity and influenced by precipitation) and the seawater layer (characterized by oxygen-saturated seawater with high salinity entering the cave). Sequencing was performed at the Joint Microbiome Facility of the Medical University of Vienna and the University of Vienna under the project ID JMF-2110-14.

滨海半咸水生态系统（anchialine ecosystems）中明确界定的生态渐变群可作为影响物种分布的选择屏障。连同光照资源与营养限制因素一道，生态渐变群区域被公认为是这类复杂生境中微生物演化的促进因子。为揭示盐度梯度（salinity gradient）沿线的微生物多样性及其在生物地球化学循环中的潜在生态功能，本研究对不同水团进行了采样并开展了微生物多样性分析。稳定盐跃层（halocline）可促进位于含氧表层水层（以低盐度为特征且受降水影响）与海水层（以含氧饱和的高盐度海水涌入洞穴为特征）之间的缺氧（euxinic）水层内的硫化物积累。本研究的测序工作由维也纳医科大学与维也纳大学联合微生物组研究设施（Joint Microbiome Facility）依托项目编号JMF-2110-14完成。