Data for manuscript 'Ocean acidification reduces growth and grazing of Antarctic heterotrophic nanoflagellates'

This data set was collected from a ocean acidification minicosm experiment performed at Davis Station, Antarctica during the 2014/15 summer season. It includes:- description of methods for all data collection and analyses.- flow cytometry counts; autotrophic cells, heterotrophic nanoflagellates, and prokaryotesContext from the public summary for project 4026:Manmade CO2 has increased ocean acidity by 30% and it is projected to rise 300% by 2100. Antarctic waters will be amongst the earliest and most severely affected by this increase. Microbes are the base of the marine food chain and primary drivers of the biological pump. This project will incubate natural communities of Antarctic marine microbes in minicosms at a range of CO2 concentrations to quantify changes in their structure and function, the physiological responses that drive these changes, and provide input to models that predict effects on biogeochemical cycles and Antarctic food webs.

本数据集采集自2014/2015夏季于南极洲戴维斯站（Davis Station）开展的海洋酸化微型中宇宙（minicosm）实验。数据集包含以下内容：1. 所有数据采集与分析方法的详细说明；2. 流式细胞术（flow cytometry）计数数据，涵盖自养细胞、异养纳米鞭毛虫与原核生物的计数结果。项目4026的公开摘要背景如下：人为活动排放的二氧化碳已使海洋酸度升高30%，预计到2100年海洋酸度将较当前上升300%。南极海域将是受此酸度上升影响最早、最为严重的区域之一。微生物是海洋食物链的基础类群，同时也是生物泵的核心驱动因子。本项目将在不同二氧化碳浓度梯度的微型中宇宙培养体系中培育南极海洋微生物的自然群落，以量化其群落结构与功能的变化、驱动此类变化的生理响应机制，并为预测生物地球化学循环及南极食物网变化的模型提供输入参数。