Metagenomic data from samples collected on cruise Chikyu-331 in the Okinawa Trough, Japan from September to October 2010

<p>Next-generation sequencing data across a hydrothermal gradient; Okinawa Backarc Basin IODP 331 – subvent biosphere.&nbsp;The purpose these metagenomic data was to capture a distinct changeover of microbial assemblages between the mesophilic horizons above 10 mbsf and the hottest (55C) hydrothermal clay horizon. In this section of the dynamic Iheya North Hydrothermal system, the temperature gradient was estimated to be ~3C/m. These metagenomes provide functional evidence to this model, demonstrating that molecular signals represent a responsive microbial community to the increasingly demanding environmental conditions.</p>热液梯度下的二代测序（Next-generation sequencing）数据集；冲绳弧后盆地IODP 331航次——俯冲下生物圈。本宏基因组数据集的研究目的是捕捉10 mbsf（meters below seafloor，海底以下深度）以上的中温层与最热（55℃）热液黏土层之间微生物群落组成的显著转变。在活跃的伊是名北（Iheya North）热液系统该区域中，温度梯度经估算约为3℃/米。这些宏基因组为该模型提供了功能层面的实证依据，证明分子信号能够反映微生物群落对日益严苛的环境条件所产生的响应。